Difference between revisions of "ZFS"

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 +
[[Category:Keekles Infrastructure]]
 +
 
Notes on ZFS  
 
Notes on ZFS  
  
Line 72: Line 74:
 
  zdb -Lbbb  PoolName
 
  zdb -Lbbb  PoolName
 
   
 
   
−
  zpool create -f -o ashift=12 -O casesensitivity=insensitive -O normalization=formD -O compression=lz4 -O atime=off -O recordsize=256k ZfsMediaPool \
+
  zpool create -f -o ashift=13 -O normalization=formD \
−
  raidz2 /var/run/disk/by-path/PCI0@0-SAT0@17-PRT5@5-PMP@0-@0:0 /var/run/disk/by-path/PCI0@0-SAT0@17-PRT4@4-PMP@0-@0:0 \
+
-O compression=lz4 -O atime=off -O recordsize=256k -O special_small_blocks=128k BigPool \
−
/var/run/disk/by-path/PCI0@0-RP21@1B,4-PXSX@0-PRT31@1f-PMP@0-@0:0 /var/run/disk/by-path/PCI0@0-SAT0@17-PRT3@3-PMP@0-@0:0 \
+
  raidz2 /dev/sdk /dev/sdu /dev/sdo /dev/sdq /dev/sds /dev/sdb /dev/sdc /dev/sdd \  
−
  /var/run/disk/by-path/PCI0@0-SAT0@17-PRT2@2-PMP@0-@0:0 /var/run/disk/by-path/PCI0@0-SAT0@17-PRT1@1-PMP@0-@0:0 \
+
  raidz2 /dev/sdl /dev/sdm /dev/sdn /dev/sde /dev/sdp /dev/sdf /dev/sdg /dev/sdi \
−
/var/run/disk/by-path/PCI0@0-SAT0@17-PRT0@0-PMP@0-@0:0 /var/run/disk/by-path/PCI0@0-RP21@1B,4-PXSX@0-PRT2@2-PMP@0-@0:0 \
+
  special mirror /dev/sdt /dev/sdw /dev/sdv \
−
  /var/run/disk/by-path/PCI0@0-RP21@1B,4-PXSX@0-PRT3@3-PMP@0-@0:0 /var/run/disk/by-path/PCI0@0-RP21@1B,4-PXSX@0-PRT28@1c-PMP@0-@0:0 \  
+
  spare /dev/sdh /dev/sdx /dev/sdr /dev/sdj
−
  /var/run/disk/by-path/PCI0@0-RP21@1B,4-PXSX@0-PRT4@4-PMP@0-@0:0 /var/run/disk/by-path/PCI0@0-RP21@1B,4-PXSX@0-PRT29@1d-PMP@0-@0:0
 
 
   
 
   
 
  zpool add ZfsMediaPool log /dev/disk5s3
 
  zpool add ZfsMediaPool log /dev/disk5s3
Line 220: Line 221:
 
         Percent Complete: 0.00%
 
         Percent Complete: 0.00%
  
−
After about 48 hours the low level format ended.  I was able to access the disk directly without needing to power cycle it it, as I'd needed to do in the past.  Unsure if this is the case.
+
After about 40 hours the low level format ended.  I was able to access the disk directly without needing to power cycle it it, as I'd needed to do in the past.  Unsure if this is the case.
 +
 
 +
Here's the output from the info command.  <s>Note this reset the MRIE to 0!</s> I suspect this was due to this being formatted when I was working with the other disks and I couldn't se the MRIE on it as it was formatting at the time.
 +
 
 +
# ./SeaChest_Basics_x86_64-redhat-linux  -d /dev/sg11 -i
 +
==========================================================================================
 +
  SeaChest_Basics - Seagate drive utilities - NVMe Enabled
 +
  Copyright (c) 2014-2021 Seagate Technology LLC and/or its Affiliates, All Rights Reserved
 +
  SeaChest_Basics Version: 3.1.0-2_2_3 X86_64
 +
  Build Date: Jun 17 2021
 +
  Today: Sun Jun  4 16:00:45 2023        User: root
 +
==========================================================================================
 +
 +
/dev/sg11 - ST12000NM0027 - ZJV0FC790000R8168TJ9 - SCSI
 +
        Vendor ID: SEAGATE
 +
        Model Number: ST12000NM0027
 +
        Serial Number: ZJV0FC79
 +
        PCBA Serial Number: 0000R8168TJ9
 +
        Firmware Revision: E004
 +
        World Wide Name: 5000C500953FDF87
 +
        Copyright: Copyright (c) 2020 Seagate All rights reserved
 +
        Drive Capacity (TB/TiB): 12.00/10.91
 +
        Temperature Data:
 +
                Current Temperature (C): 40
 +
                Highest Temperature (C): Not Reported
 +
                Lowest Temperature (C): Not Reported
 +
        Power On Time:  3 years 217 days 23 hours 26 minutes
 +
        Power On Hours: 31511.43
 +
        MaxLBA: 2929721343
 +
        Native MaxLBA: Not Reported
 +
        Logical Sector Size (B): 4096
 +
        Physical Sector Size (B): 4096
 +
        Sector Alignment: 0
 +
        Rotation Rate (RPM): 7200
 +
        Form Factor: 3.5"
 +
        Last DST information:
 +
                DST has never been run
 +
        Long Drive Self Test Time:  19 hours 8 minutes
 +
        Interface speed:
 +
                Port 0 (Current Port)
 +
                        Max Speed (GB/s): 12.0
 +
                        Negotiated Speed (Gb/s): 12.0
 +
                Port 1
 +
                        Max Speed (GB/s): 12.0
 +
                        Negotiated Speed (Gb/s): Not Reported
 +
        Annualized Workload Rate (TB/yr): 10.31
 +
        Total Bytes Read (TB): 27.92
 +
        Total Bytes Written (TB): 9.18
 +
        Encryption Support: Not Supported
 +
        Cache Size (MiB): Not Reported
 +
        Read Look-Ahead: Enabled
 +
        Non-Volatile Cache: Enabled
 +
        Write Cache: Enabled
 +
        SMART Status: Good
 +
        ATA Security Information: Not Supported
 +
        Firmware Download Support: Full, Segmented, Deferred
 +
        Number of Logical Units: 1
 +
        Specifications Supported:
 +
                SPC-4
 +
                SAM-5
 +
                SAS-3
 +
                SPL-3
 +
                SPC-4
 +
                SBC-3
 +
        Features Supported:
 +
                Protection Type 1
 +
                Protection Type 2
 +
                Application Client Logging
 +
                Self Test
 +
                Automatic Write Reassignment [Enabled]
 +
                Automatic Read Reassignment [Enabled]
 +
                EPC [Enabled]
 +
                '''Informational Exceptions [Mode 0]'''
 +
                Translate Address
 +
                Rebuild Assist
 +
                Seagate Remanufacture
 +
                Seagate In Drive Diagnostics (IDD)
 +
                Format Unit
 +
                Fast Format
 +
                Sanitize
 +
        Adapter Information:
 +
                Vendor ID: 117Ch
 +
                Product ID: 8072h
 +
                Revision: 0006h
 +
 +
Looking at the size and blocks now, it matches the others, so this worked!
 +
 
 +
# sg_readcap -l /dev/sg11
 +
Read Capacity results:
 +
    Protection: prot_en=0, p_type=0, p_i_exponent=0
 +
    Logical block provisioning: lbpme=0, lbprz=0
 +
    Last LBA=2929721343 (0xae9fffff), Number of logical blocks=2929721344
 +
    Logical block length=4096 bytes
 +
    Logical blocks per physical block exponent=0
 +
    Lowest aligned LBA=0
 +
Hence:
 +
    Device size: 12000138625024 bytes, 11444224.0 MiB, 12000.14 GB, 12.00 TB
 +
root@Lab-ASL:~# atdevinfo -i all
 +
 +
However this confirmed the MRIE is reset to 0 and the write cache is still enabled.  That's good.
 +
# sdparm  /dev/sg11  --get=MRIE
 +
    /dev/sg11: SEAGATE  ST12000NM0027    E004
 +
MRIE          0  [cha: y, def:  0, sav:  0]
 +
 +
# sdparm --get=WCE /dev/sg11
 +
    /dev/sg11: SEAGATE  ST12000NM0027    E004
 +
WCE          1  [cha: y, def:  1, sav:  1]
 +
 +
This below is the info from the ATTO utilities (HBA) for this disk.
 +
 +
********************************************************************
 +
Target 3 Unit 0 (Channel 1, Port 0)
 +
********************************************************************
 +
Bus:Target:Unit:                  0:3:0
 +
OS Target ID:                      25
 +
Vendor:                            SEAGATE
 +
Product:                          ST12000NM0027
 +
Firmware Revision:                E004
 +
Port Address:                      50:00:C5:00:95:3F:DF:85
 +
Node Address:                      N/A
 +
OS Device Name:                    /dev/sdj
 +
Device Type:                      Disk
 +
Serial Number:                    ZJV0FC790000R8168TJ9
 +
Status:                            Ready
 +
SES Enclosure:                    Target 20, LUN 0
 +
SES Slot:                          23
 +
 +
SSD:                              No
 +
Capacity:                          10.91 TB
 +
Sector Size:                      4096 B
 +
T10-PI:                            Disabled
 +
                                    (Types 1 and 2 supported)
 +
 +
====================================================================
 +
SAS Protocol Information
 +
====================================================================
 +
Initiator Flags:                  None
 +
Target Flags:                      SSP
 +
Negotiated Rate:                  12 Gb/s
 +
SAS Depth:                        1
 +
Slot Number:                      20
 +
SAS Port ID:                      0
 +
Topology:                          Expander
 +
Expander PHY ID:                  16
 +
 +
====================================================================
 +
Supported Vital Product Data Pages
 +
====================================================================
 +
Device Identification:            Supported
 +
Extended Inquiry Data:            Supported
 +
Power Condition:                  Supported
 +
Unit Serial Number:                Supported
 +
 +
ATA Information:                  Unsupported
 +
Block Device Characteristics:      Supported
 +
Block Limits:                      Supported
 +
Logical Block Provisioning:        Supported
 +
 +
====================================================================
 +
Block Device Characteristics Information
 +
====================================================================
 +
Medium Rotation Rate:              7200
 +
Form Factor:                      3.5 in.
 +
Background Operation Control:      Unsupported
 +
 +
====================================================================
 +
Supported Log Pages
 +
====================================================================
 +
Informational Exceptions:          Supported
 +
Protocol Specific Port:            Supported
 +
Self Test Results:                Supported
 +
Temperature:                      Supported
 +
 +
====================================================================
 +
Temperature Information
 +
====================================================================
 +
Current Temperature:              40 C
 +
Reference Temperature:            60 C
 +
 +
====================================================================
 +
Mode Parameters
 +
====================================================================
 +
Write Caching:                    Enabled            (Default)
 +
Read Ahead:                        Enabled            (Default)
 +
 +
IT Nexus Loss Time:                53.255 s            (Default)
 +
Initiator Response Timeout:        53.255 s            (Default)
 +
Reject To Open Limit:              Vendor Specific    (Default)
 +
Maximum Allowed XFER RDY:          Unlimited          (Read-Only)
 +
 +
Transport Layer Retries:          Disabled            (Read-Only)
 +
 +
This was another disk and I did it under Time.  Note this only polls once ever 5 min, so time could be 5 min off, but it's not a huge amount retaliative to the actual formatting time.  
  
 +
$ time sudo /root/SeaChest/Linux/Non-RAID/centos-7_x86_64/SeaChest_Format_x86_64-redhat-linux --protectionType 0 --formatUnit 4096 --confirm this-will-erase-data --poll -d /dev/sg16
 +
==========================================================================================
 +
  SeaChest_Format - Seagate drive utilities - NVMe Enabled
 +
  Copyright (c) 2014-2021 Seagate Technology LLC and/or its Affiliates, All Rights Reserved
 +
  SeaChest_Format Version: 2.3.1-2_2_3 X86_64
 +
  Build Date: Jun 17 2021
 +
  Today: Sat Jun  3 13:56:50 2023        User: root
 +
==========================================================================================
 +
 +
/dev/sg16 - ST12000NM0027 - ZJV2AB070000C906Q6E2 - SCSI
 +
Format Unit
 +
Performing SCSI drive format.
 +
Depending on the format request, this could take minutes to hours or days.
 +
Do not remove power or attempt other access as interrupting it may make
 +
the drive unusable or require performing this command again!!
 +
 +
Progress will be updated every  5 minutes
 +
        Percent Complete: 99.99%
 +
        Percent Complete: 100.00%
 +
Format Unit was Successful!
 +
 +
 +
real    1945m3.067s
 +
user    0m0.032s
 +
sys    0m0.081s
 +
 +
32.4166666667 hours
 +
32 hours 25 min.
 +
 +
I averaged all my times and found it was 34 hours across all the disks.  I thought this may have been affected by the hours or errors on the disks that the format found. 
 +
 +
This command showed all grown (non errors from the factory) on the disks.  I could find no correlation between power on hours and grown errors.  Note that low level formatting will check each sector and remap it if it a sector is unreadable
 +
 +
for i in `seq 2 25` ; do SG="/dev/sg$i" ; echo $SG ; ./SeaChest_SMART_x86_64-redhat-linux -q --showSCSIDefects g  -d $SG; done
 +
/dev/sg2
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg3
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg4
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg5
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg6
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg7
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
    '''402794  11        208'''
 +
 +
/dev/sg8
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
    '''224641    8        283'''
 +
 +
/dev/sg9
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg10
 +
Reading Defects not supported on this device or unsupported defect list format was given.
 +
 +
/dev/sg11
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg12
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg13
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg14
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg15
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg16
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg17
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg18
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg19
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg20
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg21
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        Generation Code: 1
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg22
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg23
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        Generation Code: 1
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg24
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        Generation Code: 1
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
 +
 +
/dev/sg25
 +
===SCSI Defect List===
 +
        List includes grown defects
 +
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
 +
---Physical Sector Format---
 +
  Cylinder  Head      Sector
 +
No Defects Found
  
 +
As it's only one error on each disk, I have no idea if that's a pattern.  I will ensure they are on different pools or used as spares in any event.
  
 
==  Informational Exceptions ==
 
==  Informational Exceptions ==

Latest revision as of 14:11, 8 September 2024


Notes on ZFS

Home setup

On osx I'm running a bunch of 12tb disks in a raidz2 config. My intent is to migrate to a zpool with special devices in it.

Plan is 20 12tb disks in 2 vdev's of raidz2 with 3.2 TB SSD's in a mirror. I'll use the m2 SSD on the server for ZIL and l2arc.

This should give about 174.56 TiB of space. 


Block Size Histogram

  block   psize                lsize                asize
   size   Count   Size   Cum.  Count   Size   Cum.  Count   Size   Cum.
    512:   350K   175M   175M   350K   175M   175M      0      0      0
     1K:   348K   413M   589M   348K   413M   589M      0      0      0
     2K:   273K   722M  1.28G   273K   722M  1.28G      0      0      0
     4K:   669K  2.65G  3.93G   221K  1.17G  2.45G      0      0      0
     8K:   925K  8.50G  12.4G   176K  1.91G  4.36G  1.23M  14.7G  14.7G
    16K:   620M  9.69T  9.70T   621M  9.70T  9.70T   621M  14.6T  14.6T
    32K:  1.39M  62.8G  9.76T  82.2K  3.57G  9.70T   410K  19.0G  14.6T
    64K:   548K  47.3G  9.81T  47.2K  4.06G  9.71T  1.58M   153G  14.7T
   128K:   825K   150G  9.95T  1014K   128G  9.83T   699K   133G  14.9T
   256K:  66.3M  16.6T  26.5T  68.4M  17.1T  26.9T  66.6M  20.3T  35.1T
   512K:      0      0  26.5T      0      0  26.9T      0      0  35.1T
     1M:      0      0  26.5T      0      0  26.9T      0      0  35.1T
     2M:      0      0  26.5T      0      0  26.9T      0      0  35.1T
     4M:      0      0  26.5T      0      0  26.9T      0      0  35.1T
     8M:      0      0  26.5T      0      0  26.9T      0      0  35.1T
    16M:      0      0  26.5T      0      0  26.9T      0      0  35.1T

Things to do

  1. Set Write Cache
  2. set MRIE = 4
  3. ll format
  4. record address and hours.

One liner to do this 

for i in `seq 2 25` ; do SG="/dev/sg$i" ; echo $SG ;sdparm --set=WCE --save $SG ; sdparm --get=WCE $SG; sdparm --set=MRIE=4 --save $SG; sdparm --get=MRIE $SG; done

Optimization

All disks should be updated 

./SeaChest_Firmware_x86_64-redhat-linux --downloadFW /root/MobulaExosX12SAS-STD-5xxE-E004.LOD  -d /dev/sg7

All disks should be 4k sectors. The spinning disks should be long formatted to detect bad blocks. 

./SeaChest_Lite_x86_64-redhat-linux  --setSectorSize 4096 --confirm this-will-erase-data -d /dev/sg8

Write cache should be enabled: 

# sdparm --get=WCE /dev/sg5
    /dev/sg5: SEAGATE   ST12000NM0027     E004
WCE           0  [cha: y, def:  1, sav:  0]

# sdparm --set=WCE --save /dev/sg5                                                                                         |
    /dev/sg5: SEAGATE   ST12000NM0027     E004

# sdparm --get=WCE --save /dev/sg5
    /dev/sg5: SEAGATE   ST12000NM0027     E004
WCE           1  [cha: y, def:  1, sav:  1]



ashift= 13 = 8192 byte per IO.
recordsize             256K
compression            lz4
casesensitivity        insensitive
special_small_blocks   128K

zdb -Lbbb  PoolName

zpool create -f -o ashift=13 -O normalization=formD \
-O compression=lz4 -O atime=off -O recordsize=256k -O special_small_blocks=128k BigPool \
raidz2 /dev/sdk /dev/sdu /dev/sdo /dev/sdq /dev/sds /dev/sdb /dev/sdc /dev/sdd \ 
raidz2 /dev/sdl /dev/sdm /dev/sdn /dev/sde /dev/sdp /dev/sdf /dev/sdg /dev/sdi \
special mirror /dev/sdt /dev/sdw /dev/sdv \
spare /dev/sdh /dev/sdx /dev/sdr /dev/sdj

zpool add ZfsMediaPool log /dev/disk5s3
zpool add ZfsMediaPool cache /dev/disk5s4

=

https://github.com/openzfs/zfs/discussions/12769

Disk Notes

I've run into some issues seeing my disk size "MAX LBA" be different even after formatting 

0:17:0     SEAGATE  ST12000NM0027    E004 Disk    10.91 TB    50:00:C5:00:A6:F0:A0:79 sdn  sg15                    
                    SN:ZJV2GV4B0000C908373F 
0:18:0     SEAGATE  ST12000NM0027    E004 Disk    10.84 TB    50:00:C5:00:A6:F0:CC:89 sdj  sg11                   
                    SN:ZJV2GTFT0000C9069US9

This is strange the size is different. I ran the info command on these 

SeaChest_Basics_x86_64-redhat-linux  -d /dev/sg11 -i 
SeaChest_Basics_x86_64-redhat-linux  -d /dev/sg15 -i

This shows the following different options 

Drive Capacity (TB/TiB): 12.00/10.91 
Drive Capacity (TB/TiB): 11.92/10.84

Protection Type 2
Protection Type 2 [Enabled]

Informational Exceptions [Mode 4]
Informational Exceptions [Mode 0]

sg_readcap -l /dev/sg15
Read Capacity results:
   Protection: prot_en=0, p_type=0, p_i_exponent=0
   Logical block provisioning: lbpme=0, lbprz=0
   Last LBA=2929721343 (0xae9fffff), Number of logical blocks=2929721344
   Logical block length=4096 bytes
   Logical blocks per physical block exponent=0
   Lowest aligned LBA=0
Hence:
   Device size: 12000138625024 bytes, 11444224.0 MiB, 12000.14 GB, 12.00 TB

# sg_readcap -l /dev/sg11
Read Capacity results:
   Protection: prot_en=1, p_type=1, p_i_exponent=0 [type 2 protection]
   Logical block provisioning: lbpme=0, lbprz=0
   Last LBA=2909274111 (0xad67ffff), Number of logical blocks=2909274112
   Logical block length=4096 bytes
   Logical blocks per physical block exponent=0
   Lowest aligned LBA=0
Hence:
   Device size: 11916386762752 bytes, 11364352.0 MiB, 11916.39 GB, 11.92 TB

Thus the smaller drive has something called Protection Type 2 enabled. I had no idea what this is. Some searching turned up this website

Not knowing what this was, I then went down a seemingly never ending spiral of T10 Protection Information [PDF] standards. Its pretty neat, how I understand it is the disk controller formats the platters to 520 byte sectors, instead of the more traditional 512 byte sectors, these 8 extra bytes per sector are there for the controller to make sure that the data written to that sector is the same data that is read from it, sort of like data verification. The disk controller can then presents the system (HBA controller or raid card) with the normal 512 bytes of data per section, and any SCSI compatible controller should be able to read and write to it just fine.

Essentially this is a hold over from the 520 byte sectors and 8 bytes being used for a checksum/parity. This isn't needed in ZFS. It wastes 79.872 GiBytes of space from the disk too!

Note: I'm not sure this is due to the waste of space on this disk. It could be something the OEM does different for them as they were original 520b disks.

I tried 

# SeaChest_Basics_x86_64-redhat-linux -d /dev/sg11 --restoreMaxLBA

And it didn't increase the LBA.

So lets look at the supported formats for this: 

# ./SeaChest_Format_x86_64-redhat-linux  -d /dev/sg11 --showSupportedFormats
==========================================================================================
 SeaChest_Format - Seagate drive utilities - NVMe Enabled
 Copyright (c) 2014-2021 Seagate Technology LLC and/or its Affiliates, All Rights Reserved
 SeaChest_Format Version: 2.3.1-2_2_3 X86_64
 Build Date: Jun 17 2021
 Today: Thu Jun  1 23:15:34 2023        User: root
==========================================================================================

/dev/sg12 - ST12000NM0027 - ZJV1HW2T0000C8496S1T - SCSI

Supported Logical Block Sizes and Protection Types:
---------------------------------------------------
  * - current device format
PI Key:
  Y - protection type supported at specified block size
  N - protection type not supported at specified block size
  ? - unable to determine support for protection type at specified block size
Relative performance key:
  N/A - relative performance not available.
  Best
  Better
  Good
  Degraded
--------------------------------------------------------------------------------
 Logical Block Size  PI-0  PI-1  PI-2  PI-3  Relative Performance  Metadata Size
--------------------------------------------------------------------------------
                512     Y     ?     ?     N                   N/A            N/A
                520     Y     ?     ?     N                   N/A            N/A
                528     Y     ?     ?     N                   N/A            N/A
*              4096     Y     ?     ?     N                   N/A            N/A
               4112     Y     ?     ?     N                   N/A            N/A
               4160     Y     ?     ?     N                   N/A            N/A
--------------------------------------------------------------------------------
NOTE: Device is not capable of showing all sizes it supports. Only common
      sizes are listed. Please consult the product manual for all supported
      combinations.
NOTE: This device supports protection information (PI) (a.k.a. End to End protection).
        Type 0 - No protection beyond transport protocol
        Type 1 - Logical Block Guard and Logical Block Reference Tag
        Type 2 - Logical Block Guard and Logical Block Reference Tag (except first block)
                 32byte read/write CDBs allowed
      Not all forms of PI are supported on all sector sizes unless otherwise indicated
      in the device product manual.
NOTE: This device supports Fast Format. Fast format is not instantaneous and is used for
      switching between 5xx and 4xxx sector sizes. A fast format may take a few minutes or longer
      but may take longer depending on the size of the drive. Fast format support does not necessarily
      mean switching sector sizes AND changing PI at the same time is supported. In most cases, a
      switch of PI type will require a full device format.
      Fast format mode 1 is typically used to switch from 512 to 4096 block sizes with the current
          PI scheme.

Well that was a bust. But from reading the last thing, it looks like we'll have to try a format of the disk (again) 

# ./SeaChest_Format_x86_64-redhat-linux --protectionType 0 --formatUnit 4096 --confirm this-will-erase-data --poll -d /dev/sg11
==========================================================================================
 SeaChest_Format - Seagate drive utilities - NVMe Enabled
 Copyright (c) 2014-2021 Seagate Technology LLC and/or its Affiliates, All Rights Reserved
 SeaChest_Format Version: 2.3.1-2_2_3 X86_64
 Build Date: Jun 17 2021
 Today: Thu Jun  1 23:34:40 2023        User: root
==========================================================================================

/dev/sg11 - ST12000NM0027 - ZJV2GTFT0000C9069US9 - SCSI
Format Unit
Performing SCSI drive format.
Depending on the format request, this could take minutes to hours or days.
Do not remove power or attempt other access as interrupting it may make
the drive unusable or require performing this command again!!
Progress will be updated every  5 minutes
        Percent Complete: 0.00%

After about 40 hours the low level format ended. I was able to access the disk directly without needing to power cycle it it, as I'd needed to do in the past. Unsure if this is the case.

Here's the output from the info command. Note this reset the MRIE to 0! I suspect this was due to this being formatted when I was working with the other disks and I couldn't se the MRIE on it as it was formatting at the time. 

# ./SeaChest_Basics_x86_64-redhat-linux  -d /dev/sg11 -i
==========================================================================================
 SeaChest_Basics - Seagate drive utilities - NVMe Enabled
 Copyright (c) 2014-2021 Seagate Technology LLC and/or its Affiliates, All Rights Reserved
 SeaChest_Basics Version: 3.1.0-2_2_3 X86_64
 Build Date: Jun 17 2021
 Today: Sun Jun  4 16:00:45 2023        User: root
==========================================================================================

/dev/sg11 - ST12000NM0027 - ZJV0FC790000R8168TJ9 - SCSI
        Vendor ID: SEAGATE
        Model Number: ST12000NM0027
        Serial Number: ZJV0FC79
        PCBA Serial Number: 0000R8168TJ9
        Firmware Revision: E004
        World Wide Name: 5000C500953FDF87
        Copyright: Copyright (c) 2020 Seagate All rights reserved
        Drive Capacity (TB/TiB): 12.00/10.91
        Temperature Data:
                Current Temperature (C): 40
                Highest Temperature (C): Not Reported
                Lowest Temperature (C): Not Reported
        Power On Time:  3 years 217 days 23 hours 26 minutes
        Power On Hours: 31511.43
        MaxLBA: 2929721343
        Native MaxLBA: Not Reported
        Logical Sector Size (B): 4096
        Physical Sector Size (B): 4096
        Sector Alignment: 0
        Rotation Rate (RPM): 7200
        Form Factor: 3.5"
        Last DST information:
                DST has never been run
        Long Drive Self Test Time:  19 hours 8 minutes
        Interface speed:
                Port 0 (Current Port)
                        Max Speed (GB/s): 12.0
                        Negotiated Speed (Gb/s): 12.0
                Port 1
                        Max Speed (GB/s): 12.0
                        Negotiated Speed (Gb/s): Not Reported
        Annualized Workload Rate (TB/yr): 10.31
        Total Bytes Read (TB): 27.92
        Total Bytes Written (TB): 9.18
        Encryption Support: Not Supported
        Cache Size (MiB): Not Reported
        Read Look-Ahead: Enabled
        Non-Volatile Cache: Enabled
        Write Cache: Enabled
        SMART Status: Good
        ATA Security Information: Not Supported
        Firmware Download Support: Full, Segmented, Deferred
        Number of Logical Units: 1
        Specifications Supported:
                SPC-4
                SAM-5
                SAS-3
                SPL-3
                SPC-4
                SBC-3
        Features Supported:
                Protection Type 1
                Protection Type 2
                Application Client Logging
                Self Test
                Automatic Write Reassignment [Enabled]
                Automatic Read Reassignment [Enabled]
                EPC [Enabled]
                Informational Exceptions [Mode 0]
                Translate Address
                Rebuild Assist
                Seagate Remanufacture
                Seagate In Drive Diagnostics (IDD)
                Format Unit
                Fast Format
                Sanitize
        Adapter Information:
                Vendor ID: 117Ch
                Product ID: 8072h
                Revision: 0006h

Looking at the size and blocks now, it matches the others, so this worked! 

# sg_readcap -l /dev/sg11
Read Capacity results:
   Protection: prot_en=0, p_type=0, p_i_exponent=0
   Logical block provisioning: lbpme=0, lbprz=0
   Last LBA=2929721343 (0xae9fffff), Number of logical blocks=2929721344
   Logical block length=4096 bytes
   Logical blocks per physical block exponent=0
   Lowest aligned LBA=0
Hence:
   Device size: 12000138625024 bytes, 11444224.0 MiB, 12000.14 GB, 12.00 TB
root@Lab-ASL:~# atdevinfo -i all

However this confirmed the MRIE is reset to 0 and the write cache is still enabled. That's good. 

# sdparm  /dev/sg11  --get=MRIE
    /dev/sg11: SEAGATE   ST12000NM0027     E004
MRIE          0  [cha: y, def:  0, sav:  0]

# sdparm --get=WCE /dev/sg11
    /dev/sg11: SEAGATE   ST12000NM0027     E004
WCE           1  [cha: y, def:  1, sav:  1]

This below is the info from the ATTO utilities (HBA) for this disk.

********************************************************************
Target 3 Unit 0 (Channel 1, Port 0)
********************************************************************
Bus:Target:Unit:                   0:3:0
OS Target ID:                      25
Vendor:                            SEAGATE
Product:                           ST12000NM0027
Firmware Revision:                 E004
Port Address:                      50:00:C5:00:95:3F:DF:85
Node Address:                      N/A
OS Device Name:                    /dev/sdj
Device Type:                       Disk
Serial Number:                     ZJV0FC790000R8168TJ9
Status:                            Ready
SES Enclosure:                     Target 20, LUN 0
SES Slot:                          23

SSD:                               No
Capacity:                          10.91 TB
Sector Size:                       4096 B
T10-PI:                            Disabled
                                   (Types 1 and 2 supported)

====================================================================
SAS Protocol Information
====================================================================
Initiator Flags:                   None
Target Flags:                      SSP
Negotiated Rate:                   12 Gb/s
SAS Depth:                         1
Slot Number:                       20
SAS Port ID:                       0
Topology:                          Expander
Expander PHY ID:                   16

====================================================================
Supported Vital Product Data Pages
====================================================================
Device Identification:             Supported
Extended Inquiry Data:             Supported
Power Condition:                   Supported
Unit Serial Number:                Supported

ATA Information:                   Unsupported
Block Device Characteristics:      Supported
Block Limits:                      Supported
Logical Block Provisioning:        Supported

====================================================================
Block Device Characteristics Information
====================================================================
Medium Rotation Rate:              7200
Form Factor:                       3.5 in.
Background Operation Control:      Unsupported

====================================================================
Supported Log Pages
====================================================================
Informational Exceptions:          Supported
Protocol Specific Port:            Supported
Self Test Results:                 Supported
Temperature:                       Supported

====================================================================
Temperature Information
====================================================================
Current Temperature:               40 C
Reference Temperature:             60 C

====================================================================
Mode Parameters
====================================================================
Write Caching:                     Enabled             (Default)
Read Ahead:                        Enabled             (Default)

IT Nexus Loss Time:                53.255 s            (Default)
Initiator Response Timeout:        53.255 s            (Default)
Reject To Open Limit:              Vendor Specific     (Default)
Maximum Allowed XFER RDY:          Unlimited           (Read-Only)

Transport Layer Retries:           Disabled            (Read-Only)

This was another disk and I did it under Time. Note this only polls once ever 5 min, so time could be 5 min off, but it's not a huge amount retaliative to the actual formatting time. 

$ time sudo /root/SeaChest/Linux/Non-RAID/centos-7_x86_64/SeaChest_Format_x86_64-redhat-linux --protectionType 0 --formatUnit 4096 --confirm this-will-erase-data --poll -d /dev/sg16
==========================================================================================
 SeaChest_Format - Seagate drive utilities - NVMe Enabled
 Copyright (c) 2014-2021 Seagate Technology LLC and/or its Affiliates, All Rights Reserved
 SeaChest_Format Version: 2.3.1-2_2_3 X86_64
 Build Date: Jun 17 2021
 Today: Sat Jun  3 13:56:50 2023        User: root
==========================================================================================

/dev/sg16 - ST12000NM0027 - ZJV2AB070000C906Q6E2 - SCSI
Format Unit
Performing SCSI drive format.
Depending on the format request, this could take minutes to hours or days.
Do not remove power or attempt other access as interrupting it may make
the drive unusable or require performing this command again!!

Progress will be updated every  5 minutes
        Percent Complete: 99.99%
        Percent Complete: 100.00%
Format Unit was Successful!


real    1945m3.067s
user    0m0.032s
sys     0m0.081s

32.4166666667 hours
32 hours 25 min.

I averaged all my times and found it was 34 hours across all the disks. I thought this may have been affected by the hours or errors on the disks that the format found.

This command showed all grown (non errors from the factory) on the disks. I could find no correlation between power on hours and grown errors. Note that low level formatting will check each sector and remap it if it a sector is unreadable

for i in `seq 2 25` ; do SG="/dev/sg$i" ; echo $SG ; ./SeaChest_SMART_x86_64-redhat-linux -q --showSCSIDefects g -d $SG; done 

/dev/sg2
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg3
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg4
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg5
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg6
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg7
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
    402794   11         208

/dev/sg8
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
    224641    8         283

/dev/sg9
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg10
Reading Defects not supported on this device or unsupported defect list format was given.

/dev/sg11
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg12
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg13
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg14
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg15
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg16
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg17
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg18
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg19
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg20
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg21
===SCSI Defect List===
        List includes grown defects
        Generation Code: 1
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg22
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg23
===SCSI Defect List===
        List includes grown defects
        Generation Code: 1
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg24
===SCSI Defect List===
        List includes grown defects
        Generation Code: 1
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

/dev/sg25
===SCSI Defect List===
        List includes grown defects
        NOTE: At this time, reported defects are for the entire device, not a single logical unit
---Physical Sector Format---
  Cylinder  Head      Sector
No Defects Found

As it's only one error on each disk, I have no idea if that's a pattern. I will ensure they are on different pools or used as spares in any event.

Informational Exceptions

MRIE (Method Of Reporting Informational Exceptions) field

This defines how the disk handles errors on the SAS level.

Page 417, table 391, of this document shows the following explanations:

MRIE
 Description
0 No reporting of informational exception condition: The device server shall not report information exception conditions.
1 Asynchronous event reporting: Obsolete
2 Generate unit attention:
The device server shall report informational exception conditions by establishing a unit attention condition (see SAM-5) for the initiator port associated with every I_T nexus, with the additional sense code set to indicate the cause of the informational exception condition.

As defined in SAM-5, the command that has the CHECK CONDITION status with the sense key set to UNIT ATTENTION is not processed before the informational exception condition is reported
3 Conditionally generate recovered error: The device server shall report informational exception conditions, if the reporting of recovered errors is allowed, by returning a CHECK CONDITION status. If the TEST bit is set to zero, the status may be returned after the informational exception condition occurs on any command for which GOOD status or INTERMEDIATE status would have been returned. If the TEST bit is set to one, the status shall be returned on the next command received on any I_T nexus that is normally capable of returning an informational exception condition when the test bit is set to zero. The sense key shall be set to RECOVERED ERROR and the additional sense code shall indicate the cause of the informational exception condition.

The command that returns the CHECK CONDITION for the informational exception shall complete without error before any informational exception condition may be reported.
4 Unconditionally generate recovered error: The device server shall report informational exception conditions, regardless of whether the reporting of recovered errors is allowed, by returning a CHECK CONDITION status. If the TEST bit is set to zero, thestatus may be returned after the informational exception condition occurs on any command for which GOOD status or INTERMEDIATE status would have been returned. If the TEST bit is set to one, the status shall be returned on the next command received on any I_T nexus that is normally capable of returning an informational exception condition when the TEST bit is set to zero. The sense key shall be set to RECOVERED ERROR and the additional sense code shall indicate the cause of the informational exception condition.

The command that returns the CHECK CONDITION for the informational exception shall complete without error before any informational exception condition may be reported.
5 Generate no sense: The device server shall report informational exception conditions by returning a CHECK CONDITION status. If the TEST bit is set to zero, the status may be returned after the informational exception condition occurs on any command for which GOOD status or INTERMEDIATE status would have been returned. If the TEST bit is set to one, the status shall be returned on the next command received on any I_T nexus that is normally capable of returning an informational exception condition when the TEST bit is set to zero. The sense key shall be set to NO SENSE and the additional sense code shall indicate the cause of the informational exception condition.

The command that returns the CHECK CONDITION for the informational exception shall complete without error before any informational exception condition may be reported.
6 Only report informational exception condition on request: The device server shall preserve the informational exception(s) information. To find out about information exception conditions the application client polls the device server by issuing a REQUEST SENSE command. In the REQUEST SENSE parameter data that contains the sense data, the sense key shall be set to NO SENSE and the additional sense code shall indicate the cause of the informational exception condition.
7-B Reserved
C-F Vendor specific

I can find no suggested setting of this for Linux or ZFS use. From my reading I will choose to set this to 4.

There a two ways to set this.

SeaChest_SMART

This is the command to set it via SeaChest 

# ./SeaChest_SMART_x86_64-redhat-linux -d /dev/sg11 --setMRIE 4
==========================================================================================
 SeaChest_SMART - Seagate drive utilities - NVMe Enabled
 Copyright (c) 2014-2021 Seagate Technology LLC and/or its Affiliates, All Rights Reserved
 SeaChest_SMART Version: 2.0.1-2_2_3 X86_64
 Build Date: Jun 17 2021
 Today: Thu Jun  1 21:29:34 2023        User: root
==========================================================================================

/dev/sg11 - ST12000NM0027 - ZJV2GTFT0000C9069US9 - SCSI
Successfully set MRIE mode to 4

# ./SeaChest_SMART_x86_64-redhat-linux -d /dev/sg11 -i
==========================================================================================
 SeaChest_SMART - Seagate drive utilities - NVMe Enabled
 Copyright (c) 2014-2021 Seagate Technology LLC and/or its Affiliates, All Rights Reserved
 SeaChest_SMART Version: 2.0.1-2_2_3 X86_64
 Build Date: Jun 17 2021
 Today: Thu Jun  1 21:29:37 2023        User: root
==========================================================================================

/dev/sg11 - ST12000NM0027 - ZJV2GTFT0000C9069US9 - SCSI
        Vendor ID: SEAGATE
        Model Number: ST12000NM0027
        Serial Number: ZJV2GTFT
        PCBA Serial Number: 0000C9069US9
        Firmware Revision: E004
        World Wide Name: 5000C500A6F0CC8B
        Copyright: Copyright (c) 2020 Seagate All rights reserved
        Drive Capacity (TB/TiB): 11.92/10.84
        Temperature Data:
                Current Temperature (C): 36
                Highest Temperature (C): Not Reported
                Lowest Temperature (C): Not Reported
        Power On Time:  2 years 100 days 15 hours 26 minutes
        Power On Hours: 19935.43
        MaxLBA: 2909274111
        Native MaxLBA: Not Reported
        Logical Sector Size (B): 4096
        Physical Sector Size (B): 4096
        Sector Alignment: 0
        Rotation Rate (RPM): 7200
        Form Factor: 3.5"
        Last DST information:
                DST has never been run
        Long Drive Self Test Time:  19 hours 1 minute
        Interface speed:
                Port 0 (Current Port)
                        Max Speed (GB/s): 12.0
                        Negotiated Speed (Gb/s): 12.0
                Port 1
                        Max Speed (GB/s): 12.0
                        Negotiated Speed (Gb/s): Not Reported
        Annualized Workload Rate (TB/yr): 12.36
        Total Bytes Read (TB): 23.82
        Total Bytes Written (TB): 4.30
        Encryption Support: Not Supported
        Cache Size (MiB): Not Reported
        Read Look-Ahead: Enabled
        Non-Volatile Cache: Enabled
        Write Cache: Enabled
        SMART Status: Good
        ATA Security Information: Not Supported
        Firmware Download Support: Full, Segmented, Deferred
        Number of Logical Units: 1
        Specifications Supported:
                SPC-4
                SAM-5
                SAS-3
                SPL-3
                SPC-4
                SBC-3
        Features Supported:
                Protection Type 1
                Protection Type 2 [Enabled]
                Application Client Logging
                Self Test
                Automatic Write Reassignment [Enabled]
                Automatic Read Reassignment [Enabled]
                EPC [Enabled]
                Informational Exceptions [Mode 4]
                Translate Address
                Rebuild Assist
                Seagate Remanufacture
                Seagate In Drive Diagnostics (IDD)
                Format Unit
                Fast Format
                Sanitize
        Adapter Information:
                Vendor ID: 117Ch
                Product ID: 8072h
                Revision: 0006h

sg utils

# sdparm  /dev/sg11  --set=MRIE=4
    /dev/sg11: SEAGATE   ST12000NM0027     E004

# sdparm  /dev/sg11  --get=MRIE
    /dev/sg11: SEAGATE   ST12000NM0027     E004
MRIE          4  [cha: y, def:  0, sav:  4]
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