Re: possible regression in usb-storage?

[Johann Klammer <klammerj@a1.net>]

On 9/25/26 6:37 AM, Johann Klammer wrote:
> 
> 
> On 9/25/26 4:03 AM, Alan Stern wrote:
>>
>> Maybe the drive doesn't like the 100-byte INQUIRY, even though it
>> claims to support it.  You can test this by doing (as root):
>>
>>     echo 'Seagate:Expansion SW:1024' >/proc/scsi/device_info
>>
>> before you plug in the drive.  That should suppress the 100-byte
>> INQUIRY command.
>>
>> Alan Stern
>>
> I don't seem to have that file. Am I missing a module?
Nevermind. I put it in modprobe.d

kernel 6.9.9 with no usb quirks and
options scsi_mod dev_flags="Seagate:Expansion SW:1024"
I did not get crashing threads this time. but a slew of errors.
and a 0 bytes sdd device.

> [  125.722585] usb 5-6: new high-speed USB device number 4 using ehci-pci
> [  125.927652] usb 5-6: New USB device found, idVendor=0bc2, idProduct=2039, bcd
> [  125.927686] usb 5-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> [  125.927713] usb 5-6: Product: Expansion SW
> [  125.927733] usb 5-6: Manufacturer: Seagate
> [  125.927752] usb 5-6: SerialNumber: 00000000NACD256B
> [  125.928687] scsi host5: uas
> [  125.929390] scsi 5:0:0:0: Direct-Access     Seagate  Expansion SW     1901 PQ
> [  125.934625] scsi 5:0:0:0: Attached scsi generic sg3 type 0
> [  157.950205] sd 5:0:0:0: [sdd] Unit Not Ready
> [  157.951286] sd 5:0:0:0: [sdd] Sense Key : Hardware Error [current].
> [  157.952357] sd 5:0:0:0: [sdd] ASC=0x44 <<vendor>>ASCQ=0x81.
> [  157.953828] sd 5:0:0:0: [sdd] Read Capacity(16) failed: Result: hostbyte=DID_
> [  157.954921] sd 5:0:0:0: [sdd] Sense Key : Hardware Error [current].
> [  157.952357] sd 5:0:0:0: [sdd] ASC=0x44 <<vendor>>ASCQ=0x81.
> [  157.953828] sd 5:0:0:0: [sdd] Read Capacity(16) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_OK
> [  157.954921] sd 5:0:0:0: [sdd] Sense Key : Hardware Error [current].
> [  157.956034] sd 5:0:0:0: [sdd] ASC=0x44 <<vendor>>ASCQ=0x81.
> [  157.957578] sd 5:0:0:0: [sdd] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_OK
> [  157.958688] sd 5:0:0:0: [sdd] Sense Key : Hardware Error [current].
> [  157.959789] sd 5:0:0:0: [sdd] ASC=0x44 <<vendor>>ASCQ=0x81.
> [  157.960958] sd 5:0:0:0: [sdd] 0 512-byte logical blocks: (0 B/0 B)
> [  157.962042] sd 5:0:0:0: [sdd] 0-byte physical blocks
> [  157.963454] sd 5:0:0:0: [sdd] Test WP failed, assume Write Enabled
> [  157.964703] sd 5:0:0:0: [sdd] Asking for cache data failed
> [  157.965753] sd 5:0:0:0: [sdd] Assuming drive cache: write through
> [  157.967330] sd 5:0:0:0: [sdd] Preferred minimum I/O size 4096 bytes not a multiple of physical block size (0 bytes)
> [  157.968382] sd 5:0:0:0: [sdd] Optimal transfer size 33553920 bytes not a multiple of physical block size (0 bytes)
> [  157.969763] sd 5:0:0:0: [sdd] Attached SCSI disk
> [  310.080965] usb 5-6: USB disconnect, device number 4