[dm-devel] multipathd segfault and SCSI errors

[Prakash Rudraraju]

Eliminating the local disk /dev/sda by adding it to blacklist solved the problem of segmentation fault during boot up.

blacklist {
        devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
        devnode "^(hd|xvd)[a-z]*"
        devnode "sda"
        wwid "*"
}

I am currently importing the database to check for path failures during load. It takes about 12 hours to complete, but we had no path failures so far.

I will get "multipathd -v9 -d" after the import is complete.

# multipathd -v9 -d
Oct 24 08:38:39 | --------start up--------
Oct 24 08:38:39 | read /etc/multipath.conf
Oct 24 08:38:39 | process is already running

Thanks,
Prakash.


-----Original Message-----
From: dm-devel-bounces at redhat.com [mailto:dm-devel-bounces at redhat.com] On Behalf Of Konrad Rzeszutek
Sent: Friday, October 24, 2008 6:31 AM
To: device-mapper development
Subject: Re: [dm-devel] multipathd segfault and SCSI errors

> multipathd[7165]: segfault at 000000000000000a rip 00002aaaaaf51a3d rsp 00007fff03b50090 error 4

Can you run multipathd as so:

multipathd -v9 -d

And provide the -200 lines output from the segfault output? You might need to
edit the /etc/init.d/multipathd to have this work and pipe the output to a log file or so.

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