Mailinglist Archive: opensuse-bugs (11339 mails)

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https://bugzilla.novell.com/show_bug.cgi?id=461321


           Summary: DM-crypt lockup with heavy accesses
           Product: openSUSE 11.1
           Version: Final
          Platform: i586
        OS/Version: openSUSE 11.1
            Status: NEW
          Severity: Critical
          Priority: P5 - None
         Component: Kernel
        AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
        ReportedBy: f+novell@xxxxxxxxxxx
         QAContact: qa@xxxxxxx
          Found By: Customer


I have a lockup when I access a LUKS-encrypted device on a LVM volume. My
system seems locked up for any I/O. Open SSH shells don't respond, file I/O is
suspended, keyboard input does not stop screen saver. However, intrinsic
operations such as TCP/IP seem to work (system responds to pings).

This worked fine with SuSE 10.3, with kernel 2.6.22.19-0.1-bigsmp, BTW. The
system was upgraded to openSUSE 11.1 with 2.6.27 and froze up 4 times in 48
hours with moderate file I/O.

This is a condition which I have seen from time to time when the kernel
internal crypto APIs have changed. Devicemapper seems to be very prone to these
conditions, even more so if multiple layers of DM-devices stack up.

I believe, there were changes around 2.6.24/2.6.25 which may have caused this:

http://lkml.indiana.edu/hypermail/linux/kernel/0803.1/2389.html
http://www.archivum.info/dm-devel@xxxxxxxxxx/2008-06/msg00007.html

This one is a major showstopper for me.


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