matthieu castet wrote:Mark Lord wrote:..matthieu castet wrote:It should work without permissive, permissive was need without the patch.Hi,...
Tejun Heo wrote:David Greaves wrote:That true that the hardware should support SAT, but even if it support it, linux need some patches to support SAT over USB. See http://thread.gmane.org/gmane.linux.scsi/43688 and the patch mentioned in the thread.Error Counter logging not supported
Device does not support Self Test logging
The USB bridge should support SAT (SCSI-ATA translation) and many
don't. Nothing much can be done about it. The hardware just don't know
how to do it.
Ahh.. Great! This mostly fixes smartctl operation on at least two
of my USB drive enclosures here:
1. a recent rev. 2.5" NexStar-3 SATA enclosure.
2. a 250GB 2.5" WD "Passport" external USB drive/enclosure.
With the patch, this command line works for me:
smartctl -a -dsat -T permissive /dev/sdb
And hdparm just works regardless, with or without the patch.
You said hdparm works without the patch. I wonder how it work. IRRC it asks check condition stuff for every command. I am interested to see the hdparm --verbose output without the patch.
Mmm... actually, the "-dsat" flag seems to make smartctl mostly work
with and without the patch. This is on 2.6.25.6 on my notebook here.
Some month I'll update the kernel and fix VMware and wireless again
for a newer kernel, but for now that's what it runs.
Here's hdparm --verbose, sans patch:
hdparm --verbose -I /dev/sdb
/dev/sdb:
outgoing cdb: 85 08 2e 00 00 00 00 00 00 00 00 00 00 40 ec 00
SG_IO: ATA_16 status=0x2, host_status=0x0, driver_status=0x8
SG_IO: sb[] = {72 00 00 00 00 00 00 0e}
SG_IO: desc[] = {09 0c .. }
ATA_16 tf->status=0x00 tf->error=0x00
ATA device, with non-removable media
Model Number: Hitachi HTS541612J9SA00
Serial Number: SB2D11E4GESWAB
Firmware Revision: SBDOC74P