[linux-lvm] LVM 1: Snapshot causes seg fault of lvdisplay and crashes system
Heinz Mauelshagen
mauelshagen at redhat.com
Mon Feb 16 04:29:01 UTC 2004
On Sat, Feb 14, 2004 at 12:15:37AM -0600, Ken Fuchs wrote:
> I did the following to create a snapshot of an active filesystem to try
> to make a consistent copy of it:
>
> # lvcreate --extents 30 --snapshot --name home2snap /dev/sys/home2gb
> ...
> lvcreate -- INFO: using default snapshot chunk size of 64 KB for "/dev/sys/home\
> 2snap"
> lvcreate -- doing automatic backup of "sys"
> lvcreate -- logical volume "/dev/sys/home2snap" successfully created
>
> # lvdisplay /dev/sys/home2gb
> --- Logical volume ---
> LV Name /dev/sys/home2gb
> VG Name sys
> LV Write Access read/write
> LV snapshot status source of
> /dev/sys/home2snap [active]
> Segmentation fault
> # lvdisplay /dev/sys/home2gb
> --- Logical volume ---
> LV Name /dev/sys/home2gb
> VG Name sys
> LV Write Access read/write
> LV snapshot status source of
> /dev/sys/home2snap [active]
> Segmentation fault
> ecstasy:/#
>
> <At this point I lost my remote connection to the machine and presume it
> crashed; it probably didn't reboot, since subsequent attempts to
> reconnect via ssh failed and ping failed as well.>
>
> The kernel is probably 1.0.3 (Debian SPARC sun4u 2.4.21 up) and the lvm
> tools are 1.0.8.
>
> Any suggestions for avoiding these seg faults and the system crash?
Upgrade to an actual driver LVM version. You hit a list bug IRT snapshots.
>
> Sincerely,
>
> Ken Fuchs <kfuchs at winternet.com>
>
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
--
Regards,
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
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Heinz Mauelshagen Red Hat, Inc.
Consulting Development Engineer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen at RedHat.com +49 2626 141200
FAX 924446
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