PVLink 31 Failed! The PV is still accessible

[cam9269]

Hi Guys,

I got some worriesome issues going on our servers connected to an EVA4000. We keep getting these messages everyday:

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LVM: Performed a switch for Lun ID = 0 (pv = 0x0000000068d32000), from raw devic e 0x1f180100 (with priority: 2, and current flags: 0x0) to raw device 0x1f140100 (with priority: 0, and current flags: 0x80).
LVM: VG 64 0x010000: PVLink 31 0x140100 Recovered.
LVM: Performed a switch for Lun ID = 0 (pv = 0x0000000068d32000), from raw devic e 0x1f140100 (with priority: 0, and current flags: 0x40) to raw device 0x1f18010 0 (with priority: 2, and current flags: 0x0).
LVM: VG 64 0x010000: PVLink 31 0x140100 Failed! The PV is still accessible.
LVM: VG 64 0x010000: PVLink 31 0x190100 Failed! The PV is still accessible.
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We are not using securepath software but only configured 'alternate links' for the VG.

And when I check the disks with ioscan and diskinfo, they all come back fine.

But still, the issue just keeps popping up and these are out production servers and we need to be sure that these errors would not cause any data corruption

So, here's hoping you guys could help me diagnose this problem and possibly resolve it.

Thanks!

[Víctor Cespón]

That's c14t0d1 and c19t0d1

I suppose those will be two of the paths to the EVA. Check ioscan and see it both paths are on the same controller or the same switch.

Then check EVA or switch log.

[cam9269]

Hi,

I recently set the IO timeout from 60sec to 90sec. For a while, these errors went away (Feb28-Aug3), but on Aug4 it re-appeared again. This day was a high volume IO day - because of month-end processing and stuff.

What could be the next actions to take?