Manual invocation of fstrim fails like this.
root@vault:/dev/disk# mount -t ext4 /dev/sdc1 /mnt/sdc1 root@vault:/dev/disk# fstrim -v /mnt/sdc1 fstrim: /mnt/sdc1: the discard operation is not supported
My goal is to setup a new Quad SATA Hat with 3 brand new Samsung EVO 860 1TB SSDs in RAID 5 with OMV. Following the instructions that all went reasonably well. While tweaking /lib/udev/rules.d/60-persistent-storage.rules, I did find my vendor string is “ACASIS”, not “JMicron”.
I was able to build the array and make a file-system… Just one last step that I know is necessary for SSDs, that is to ensure fstrim is working. lbdroidman provides an excellent description here: <
USB 3.0 pendrive > of the motivation for fstrim and the eventual consequences of not getting this right.
My guess is that the problem is with the USB implementation on the Quad SATA Hat. Curious thing I found while debugging… hdparm -I /dev/sda1 gives dramatically different results when using the QSH vs an old reliable NexStar USB enclosure… Note the “bad/missing sense data”, and truncated list of supported features. Support for TRIM appears in the list from NexStar, but not from QSH.
QSH results:
ATA device, with non-removable media
Model Number: Samsung SSD 860 EVO 1TB
Serial Number: S599NJ0N320089Y
Firmware Revision: 80003040
Standards:
Supported: 7 6 5 4
Likely used: 7
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 1953525168
SG_IO: bad/missing sense data, sb[]: 70 00 0b 00 00 00 00 0a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Logical Sector size: 512 bytes
Physical Sector size: 512 bytes
device size with M = 1024*1024: 953869 MBytes
device size with M = 1000*1000: 1000204 MBytes (1000 GB)
cache/buffer size = unknown
Capabilities:
LBA, IORDY(can be disabled)
Standby timer values: spec'd by Vendor, no device specific minimum
R/W multiple sector transfer: Max = 1 Current = 1
Advanced power management level: 1
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=240ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
Write cache
Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* Advanced Power Management feature set
SET_MAX security extension
* 48-bit Address feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* WRITE_{DMA|MULTIPLE}_FUA_EXT
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* Gen3 signaling speed (6.0Gb/s)
* Software settings preservation
Security:
supported
not enabled
not locked
frozen
not expired: security count
not supported: enhanced erase
more than 508min for SECURITY ERASE UNIT.
Checksum: correct
NexStar results:
ATA device, with non-removable media
Model Number: Samsung SSD 860 EVO 1TB
Serial Number: S599NJ0N320089Y
Firmware Revision: RVT04B6Q
Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
Standards:
Used: unknown (minor revision code 0x005e)
Supported: 11 8 7 6 5
Likely used: 11
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 1953525168
Logical Sector size: 512 bytes
Physical Sector size: 512 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 953869 MBytes
device size with M = 1000*1000: 1000204 MBytes (1000 GB)
cache/buffer size = unknown
Form Factor: 2.5 inch
Nominal Media Rotation Rate: Solid State Device
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 1 Current = 1
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
SET_MAX security extension
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* WRITE_{DMA|MULTIPLE}_FUA_EXT
* 64-bit World wide name
Write-Read-Verify feature set
* WRITE_UNCORRECTABLE_EXT command
* {READ,WRITE}_DMA_EXT_GPL commands
* Segmented DOWNLOAD_MICROCODE
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* Gen3 signaling speed (6.0Gb/s)
* Native Command Queueing (NCQ)
* Phy event counters
* READ_LOG_DMA_EXT equivalent to READ_LOG_EXT
DMA Setup Auto-Activate optimization
Device-initiated interface power management
* Asynchronous notification (eg. media change)
* Software settings preservation
Device Sleep (DEVSLP)
* SMART Command Transport (SCT) feature set
* SCT Write Same (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
* reserved 69[4]
* DOWNLOAD MICROCODE DMA command
* SET MAX SETPASSWORD/UNLOCK DMA commands
* WRITE BUFFER DMA command
* READ BUFFER DMA command
* Data Set Management TRIM supported (limit 8 blocks)
* Deterministic read ZEROs after TRIM
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
4min for SECURITY ERASE UNIT. 8min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 5002538e30332bd5
NAA : 5
IEEE OUI : 002538
Unique ID : e30332bd5
Device Sleep:
DEVSLP Exit Timeout (DETO): 50 ms (drive)
Minimum DEVSLP Assertion Time (MDAT): 30 ms (drive)
Checksum: correct