Messages in this thread | | | Subject | SB600 AHCI: Hard Disk Corruption | From | Patrick <> | Date | Sun, 25 May 2008 14:10:35 +0200 |
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Hello (Tejun Heo *)
I've got an annoying problem with my athlon 64bit, 4gb ram, asus m2a-vm (->SB600 AHCI controller), SAMSUNG HD501LJ SATA Disk. I'm using kernel 2.6.26-rc3. Everything works fine, expect for standby/suspend/hibernate. Standby freezes, hibernate, I acually haven't tested lately cause I want suspend to ram to work first.
"echo mem > /sys/power/state; vbetool post;" (on text console) successfully suspends the system and it resumes as well, BUT: After resuming, things quickly turn bad: "file not fonund", kernel reports ext2 errors on root (lvm) partition. After a (hard) reboot the root fileystem won't even be recognized again by mount and e2fschk can harldy recover it (thousands of inodes go to lost+found, have to restore backups to make the system work again). This happend even when the partition was mounted _readonly_ and it happens to ALL partitions mounted during suspend. ** I'm testing now by appending break=init to the kernel command line, getting to a busybox on the initramfs, and then unmounting "root" before suspending. From there i can dmesg to see what's happening (though the dmesg buffer is quiet small...can i increase that in proc somewhere?). I'd be willing to test and send whatever logs you need to get this fixed.
Some additional infos: Upgrading from 2.6.24, I hoped the AHCI_HFLAG_NO_MSI in drivers/ata/ahci.c might solve the issue - no luck. All the other sb600 workarounds: obviousley no luck as well. irqpoll: slightly different behaviour when unloading sd_mod and ahci modules before suspending: without irqpoll, the disk ([sda]) doesn't show up again after "modprobe ahci; modprobe sd_mod" and I get "ata5.00: failed to IDENTIFY [...] err_mask=0x80" "failed to restore some devices [...]" errors with irqpoll, disk shows up again and no errors, but "there is different data" on each read (head -c10000) from /dev/sda. Though the disk is not changed, after rebooting it contains the original data. I just wonder how the data is "created" - it seems to be disk content from different locations (not beginning) on the disk - if i "dd if=/dev/sda of=/dev/null", i hear the disk reading data....
Well - I hope you might be able to make some sense of that and tell me what logs and dumps exactly you need to fix it...
Greets - Patrick
* I read many threads in which Tejun provided patches for the SB600 AHCI Controller which seems to be seriously broken - if only i knew that in advance... Maybe he can fix this issue as well - last ressort. Otherwise I'll burn that mobo!
** After my firs install and configuring the system for a day, trying out suspend to ram smashed it with no backups, since then i didn't learn my lesson and smashed it again 2-3 times, this time with backups at hand though, ...
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