[linux-lvm] Lvm hangs on San fail

[Eugene Vilensky]

What is your multipath.conf  setting of "queue_if_no_path?

On 4/14/10, jose nuno neto <jose.neto at liber4e.com> wrote:
> Hi2all
>
> I'm on RHEL 5.4 with
> lvm2-2.02.46-8.el5_4.1
> 2.6.18-164.2.1.el5
>
> I have a multipathed SAN connection with what Im builing LVs
> Its a Cluster system, and I want LVs to switch on failure
>
> If I simulate a fail through the OS via /sys/bus/scsi/devices/$DEVICE/delete
> I get a LV fail and the service switch to other node
>
> But if I do it "real" portdown on the SAN Switch, multipath reports path
> down, but LVM commands hang forever and nothing gets switched
>
> from the logs i see multipath failing paths, and lvm Failed to remove faulty
> "devices"
>
> Any ideas how I should  "fix" it?
>
> Apr 14 16:02:45 dc1-x6250-a lvm[15622]: Log device, 253:53, has failed.
> Apr 14 16:02:45 dc1-x6250-a lvm[15622]: Device failure in
> vg_ora_scapa-lv_ora_scapa_redo
> Apr 14 16:02:45 dc1-x6250-a lvm[15622]: Another thread is handling an
> event.  Waiting...
>
> Apr 14 16:02:52 dc1-x6250-a multipathd: mpath-dc1-a: remaining active
> paths: 0
> Apr 14 16:02:52 dc1-x6250-a multipathd: mpath-dc1-a: remaining active
> paths: 0
> Apr 14 16:02:52 dc1-x6250-a multipathd: mpath-dc1-b: remaining active
> paths: 0
> Apr 14 16:02:52 dc1-x6250-a multipathd: mpath-dc1-b: remaining active
> paths: 0
>
> Apr 14 16:03:05 dc1-x6250-a lvm[15622]: Device failure in
> vg_syb_roger-lv_syb_roger_admin
> Apr 14 16:03:14 dc1-x6250-a lvm[15622]: Failed to remove faulty devices in
> vg_syb_roger-lv_syb_roger_admin
>
> Much Thanks
> Jose
>
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>

-- 
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Regards,
Eugene Vilensky
evilensky at gmail.com