On Wed, 12 Sep 2007 03:09:14 -0400 Maurice Volaski <[EMAIL PROTECTED]> wrote:
> A working system begins hanging and it seems to be stuck on I/O > processes that use ext3 partitions that are running on top of LVM. > The system is AMD 64-bit running Gentoo. Kernel is Gentoo 2.6.22-r3 > and LVM lvm2-2.02.27. Here is the disk setup: > > Boot disk, attached to motherboard via SATA > 1) some partitions accessed via ext3 -> hardware partition. > 2) some partitions accessed via ext3 -> drbd, which is version 8.0.5, > -> hardware partition. > > External SATA-SCSI RAID, attached to via an LSI Logic card, > 3) one partition accessed via ext3 -> drbd -> hardware partition. > 4) some partitions accessed via ext3 -> LVM -> drbd -> hardware partition. > > On repeated reboots, #1) boots fine, and I can fsck #2) no problem. I > can also fsck #3, but the fsck processes on #4, which all are trying > to recover the journals, just seem to not do anything. There is no > evidence of I/O and there are no errors reported anywhere. The frozen > fsck processes cannot even be killed and the system ignores the > shutdown command. > > That the hanging fsck processes are all occurring on just the LVM > partitions seems to imply that LVM is responsible. > > drbd had been unattached to its peer during this time, and when I > reattached it, it had no trouble syncing to the peer. That system, > which should basically be identical, however, has no trouble running > running fsck everywhere. I'm not sure, though, if that lets LVM off > the hook. Next time it hangs, please do dmesg -c echo t > /proc/sysrq-trigger dmesg -s 1000000 > foo and send foo. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
