Re: rbd map snapshot, mount lv, node crash

Ilya Dryomov <idryomov@xxxxxxxxx> · Fri, 19 Jan 2024 16:13:59 +0100

On Fri, Jan 19, 2024 at 2:38 PM Marc <Marc@xxxxxxxxxxxxxxxxx> wrote:
>
> Am I doing something weird when I do on a ceph node (nautilus, el7):
>
> rbd snap ls vps-test -p rbd
> rbd map vps-test@vps-test.snap1 -p rbd
>
> mount -o ro /dev/mapper/VGnew-LVnew /mnt/disk <--- reset/reboot ceph node

Hi Marc,

It's not clear where /dev/mapper/VGnew-LVnew points to, but in
principle this should work.  There is nothing weird about mapping
a snapshot, so I'd suggest capturing the kernel panic splat for
debugging.

Thanks,

                Ilya
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