I finally upgrade my 24.04 to 24.10, and now fstrim fails. I have the
udev rules for all my USB SSDs, one old SATA two newer MVMe:
# cat /etc/udev/rules.d/10-uas-discard.rules
# Enable TRIM support for USB SSD enclosures.
ACTION=="add|change", ATTRS{idVendor}=="174c", ATTRS{idProduct}=="235c",
SUBSYSTEM=="scsi_disk", ATTR{provisioning_mode}="unmap"
ACTION=="add|change", ATTRS{idVendor}=="174c", ATTRS{idProduct}=="1351",
SUBSYSTEM=="scsi_disk", ATTR{provisioning_mode}="unmap"
ACTION=="add|change", ATTRS{idVendor}=="174c", ATTRS{idProduct}=="2362",
SUBSYSTEM=="scsi_disk", ATTR{provisioning_mode}="unmap"
Here are the kernel messages from attaching the SATA SSD:
[Mi Jan 1 18:37:14 2025] sd 2:0:0:0: [sdc] Synchronizing SCSI cache
[Mi Jan 1 18:37:14 2025] sd 2:0:0:0: [sdc] Synchronize Cache(10) failed:
Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[Mi Jan 1 18:37:14 2025] usb 2-2: USB disconnect, device number 11
[Mi Jan 1 18:42:48 2025] usb 2-2: new SuperSpeed USB device number 12 using
xhci_hcd
[Mi Jan 1 18:42:48 2025] usb 2-2: New USB device found, idVendor=174c,
idProduct=1351, bcdDevice= 1.00
[Mi Jan 1 18:42:48 2025] usb 2-2: New USB device strings: Mfr=2, Product=3,
SerialNumber=1
[Mi Jan 1 18:42:48 2025] usb 2-2: Product: RAPID-CASE U 3.1
[Mi Jan 1 18:42:48 2025] usb 2-2: Manufacturer: Sharkoon
[Mi Jan 1 18:42:48 2025] usb 2-2: SerialNumber: 2016050500000000000A
[Mi Jan 1 18:42:48 2025] scsi host2: uas
[Mi Jan 1 18:42:53 2025] scsi 2:0:0:0: Direct-Access CT1000MX 500SSD1
0 PQ: 0 ANSI: 6
[Mi Jan 1 18:42:53 2025] sd 2:0:0:0: Attached scsi generic sg2 type 0
[Mi Jan 1 18:42:57 2025] sd 2:0:0:0: [sdc] 1953525168 512-byte logical blocks:
(1.00 TB/932 GiB)
[Mi Jan 1 18:42:57 2025] sd 2:0:0:0: [sdc] 4096-byte physical blocks
[Mi Jan 1 18:42:57 2025] sd 2:0:0:0: [sdc] Write Protect is off
[Mi Jan 1 18:42:57 2025] sd 2:0:0:0: [sdc] Mode Sense: 43 00 00 00
[Mi Jan 1 18:42:57 2025] sd 2:0:0:0: [sdc] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[Mi Jan 1 18:42:57 2025] sd 2:0:0:0: [sdc] Preferred minimum I/O size 4096
bytes
[Mi Jan 1 18:42:57 2025] sd 2:0:0:0: [sdc] Optimal transfer size 33553920
bytes not a multiple of preferred minimum block size (4096 bytes)
[Mi Jan 1 18:42:57 2025] sdc: sdc1
[Mi Jan 1 18:42:57 2025] sd 2:0:0:0: [sdc] Attached SCSI disk
lsusb output:
Bus 002 Device 012: ID 174c:1351 ASMedia Technology Inc. RAPID-CASE U 3.1
systemctl status udev.service prints this:
Jan 01 18:42:48 alanya mtp-probe[396856]: checking bus 2, device 12:
"/sys/devices/pci0000:00/0000:00:08.1/0000:04:00.3/usb2/2-2"
Jan 01 18:42:48 alanya mtp-probe[396856]: bus: 2, device: 12 was not an MTP
device
Jan 01 18:42:48 alanya mtp-probe[396862]: checking bus 2, device 12:
"/sys/devices/pci0000:00/0000:00:08.1/0000:04:00.3/usb2/2-2"
Jan 01 18:42:48 alanya mtp-probe[396862]: bus: 2, device: 12 was not an MTP
device
Jan 01 18:42:57 alanya (udev-worker)[396874]: sdc: Process '/usr/bin/unshare -m
/usr/bin/snap auto-import --mount=/dev/sdc' failed with exit code 1.
Jan 01 18:42:57 alanya (udev-worker)[396872]: sdc1: Process '/usr/bin/unshare
-m /usr/bin/snap auto-import --mount=/dev/sdc1' failed with exit code 1.
I don't think the message about an SSD not being an MTP device is
relevant, but here you have it ;-)
Here is what fstrim thinks now:
# fstrim --verbose /mnt
fstrim: /mnt: the discard operation is not supported
Here is the SMART information:
Model Family: Crucial/Micron Client SSDs
Device Model: CT1000MX500SSD1
Serial Number: 1912E1F45B1B
LU WWN Device Id: 5 00a075 1e1f45b1b
Firmware Version: M3CR023
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
TRIM Command: Available
Device is: In smartctl database 7.3/5528
ATA Version is: ACS-3 T13/2161-D revision 5
SATA Version is: SATA 3.3, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Wed Jan 1 19:09:27 2025 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Right now I'm assuming that the UDev lines are not sufficient anymore.
Google does not find anything releated to Ubuntu oracular usb trim.
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https://bugs.launchpad.net/bugs/1336541
Title:
No TRIM via USB
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