Strange message on syslog

[StefanoIntroini]

Hi,
yesterday, we got some problems, it seems that the VA (7100) was very slow for about 5 minutes.

I attatch a piece of the syslog during such period of time, can you help me in understading what was happening.

Thank
Stefano

[Chan 007]

Hi,

Powerfail normally comes when the disk is not seen by the server. e.g gone bad, loose cables.

Better do ioscan -fCdisk, vgdisplay -v vgname

you may get not claimed not on in sync sought of errors.

Once you see those errors better do a diskinfo on that disk and raise a call with local HP

Chan

[RAC_1]

You had a problem with few of your disk. Check thode disks.

ll /dev/dsk | egrep '030500|050500|030600'

the disks above minor numbers need to be checked throughly. Check them with dd/stm

[Jeff Schussele]

Hi Stefano,

You had some disk drive errors - specifically:

c3t0d5
c3t0d6
c5t0d5
c5t0d6

If c5 & c3 are links to the same LUN/drive I would suspect that the problem was the LUN/drive itself. Otherwise it could have been a switch or SAN front end port problem.

HTH,
Jeff

[AIMC]

Hi Stefano,

This looks like you have a problem with your va7100, i'd guess at maybe a controller failure but the easiest way to find this out is to run arm commands

armdsp -i --> get the alias

armdsp -a ALIAS

armdiag -W ALIAS

if there is an issue you could generate a log file for HP by running

armdiag -I -if /tmp/va_logs ALIAS

this will generate a full log file /tmp/va_logs.zip which HP can analyse.

Regards,

Aidan

[Albert_31]

Hello Stefano,

If you want to understand the messages here it is..

There are only two main messages reported..

a) LVM: Performed a switch for Lun ID = 0 (pv = 0x000000004f99d000), from raw device 0x1f030600 (with priority: 0, and current flags: 0x40) to raw device 0x1f050600 (with priority: 1, and current flags: 0x0).

It reports that LVM did a path switch from c3t0d6 to c5t0d6.

b) vg[6]: pvnum=0 (dev_t=0x1f050600) is POWERFAILED

The VG whose id is 6, and has c5t0d6 as one of the PV, has timeout on an IO. this timeout is dependent on the pvtimeout found in pvdisplay /dev/dsk/c3t0d6 .. default is 30secs

let me know if it answers your questions.

regards

albert

[StefanoIntroini]

I'm going to open a support request to HP

Thanks.