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Date: Fri, 30 Jun 2006 01:44:59 -0400 From: Maurice Volaski <mvolaski@...om.yu.edu> To: drbd-user@...bit.com Cc: linux-kernel@...r.kernel.org Subject: [DRBD-user] Kernel 2.67.17.1 is hanging I/O under AMD64 [Was Re: Kernel 2.6.17-rc5 under amd64 may be hanging I/O] The problem,at least I think it's the same problem, also occurs in kernel 2.6.17.1. The relevant output has been posted online at http://www.kennedy.aecom.yu.edu/misc/drbdstall2.htm > >/ 2006-06-08 20:34:10 -0400 >\ Maurice Volaski: >> It appears that kernel 2.6.17-rc5 under amd64 may be hanging I/O >> processes spontaneously at random. >> >> Our setup here uses drbd (ver. 0.7.19), which is a network RAID kernel >> module, and initially I was fscking (ext3) filesystems, which are on >> drbd devices, and the fsck just stopped spontaneously on the two of > > them. >> >> Today, I tried copying a directory on the command line with cp -a on >> this computer (on a drbd-managed device) and then in mid-copy I tried >> to abort the process with control-C. It did not abort. I tried killing >> it with kill and then with kill -9. It turns out that the process had >> died, but is still left in ps. >> >> Just by happenstance, >> >> Anyway, I tried bringing down the peer and bringing it back up and it >> stalled. >> > > I also had an emerge sync (i.e., the Gentoo update mechanism) going >> and it too got stuck, but it doesn't, or at least shouldn't affect >> drbd disks, implying this is not a drbd bug, but a kernel bug. >> > >well. it says below that emerge hangs is drbd_al_begin_io, so it is at >least drbd related, too. > >> >* what are the numbers in /proc/drbd >> >> This is how it appears long after the copy hang and I stopped and just >> restarted drbd on the peer. The output from then hanging computer: > >thanks, that might help in debugging things. >I'll have a look, maybe I can find something in there. -- Maurice Volaski, mvolaski@...om.yu.edu Computing Support, Rose F. Kennedy Center Albert Einstein College of Medicine of Yeshiva University _______________________________________________ drbd-user mailing list drbd-user@...ts.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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