[linux-lvm] Mirror fail/recover test
malahal at us.ibm.com
malahal at us.ibm.com
Wed Feb 24 18:55:30 UTC 2010
jose nuno neto [jose.neto at liber4e.com] wrote:
> Hi
>
> I'm trying to test the failure of a SAN Mirrored Lv, and the recover and
> check for data lost.
>
> Im runing RedHat 5.4
> 2.6.18-164.2.1.el5
> lvm2-2.02.46-8.el5_4.1
>
> I create a 2mirror+log lv ok, can lvconvert to one leg only, can delete ok.
> But when I simulate a disk fail either with
> dd if=/dev/zero of=pvmirror_device
> echo offline > /sys/block/pvmirror_device/device/status
What is the output of "dmsetup status" at this point?
There must be some messages in the /var/log/messages file if you enable
them.
> lvs -a -o +devices
> stills shows the lv has mirrored ( should switch to non-mirrored right?) ,
Yes, provided you successfully started the dmeventd monitoring thread
and it handled the failure event.
Thanks, Malahal.
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