Thomas Fjellstrom wrote:
On Tue October 13 2009, andy yan wrote:
I will send you a patch for debugging this issue, please help to try and
send back the log, thanks!
I will do whatever I can to help get this resolved :) I have some C skills,
but no kernel/device driver experience, so at the very least I should be able
to do builds and make small changes if needed, in addition to patching and
endless reboots ;D
I'm also willing to help.
The card is not on a production server and the disks connected to the
card do not contain any valuable data so I can make any test wanted.
When the problem occurs it seems the devices (disks) are hosed. Deleting
them from the system (echo 1 > /sys/block/sdh/device/delete), removing
the mvsas module (rmmod -f) and reloading it doesn't work. The card
seems correctly initialised after reloading the module, it correctly
responds to commands (in /sys/class/sas_phy/ and sas_ports, I can reset
ports/phys, I can ask for a rescan of disks). But the disks themselves
do not seem to answer to the scan and are not detected, all I get is :
Oct 13 15:17:33 almery kernel: [29162.468218] sas: sas_ata_phy_reset:
Found ATA device.
Oct 13 15:17:33 almery kernel: [29162.470279] ata19.00: both IDENTIFYs
aborted, assuming NODEV
Oct 13 15:17:33 almery kernel: [29162.470321] sas: sas_ata_phy_reset:
Found ATA device.
Oct 13 15:17:33 almery kernel: [29162.472391] ata19.00: both IDENTIFYs
aborted, assuming NODEV
Oct 13 15:17:33 almery kernel: [29162.472433] sas: sas_ata_phy_reset:
Found ATA device.
Oct 13 15:17:33 almery kernel: [29162.474492] ata19.00: both IDENTIFYs
aborted, assuming NODEV
Oct 13 15:17:33 almery kernel: [29162.474533] ata19.00: disabled
Oct 13 15:17:33 almery kernel: [29162.474572] sas: sas_ata_phy_reset:
Found ATA device.
Oct 13 15:17:33 almery kernel: [29162.474627] scsi_alloc_sdev:
Allocation failure during SCSI scanning, some SCSI devices might not be
configured
Is there a way to get a disk to reinitialize itself without a reboot ?
Drives are SAMSUNG HD501LJ
Linux almery 2.6.31.1-vs2.3.0.36.14 #7 SMP Mon Oct 12 12:58:07 CEST 2009
x86_64 GNU/Linux
with or withous vserver patch applied : same problem, kernel not tainted.
The problem occurs also when the disks are not in an md array.
Christian Vilhelm.
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