Bug#661597: multipath-tools-boot: modprobe --syslog fails

Ritesh Raj Sarraf rrs at researchut.com
Wed Feb 29 10:56:32 UTC 2012

On Wednesday 29 February 2012 03:45 PM, Martin Sofaru wrote:
> I just upgraded a working Squeeze machine to Wheezy.
> Noteworthy configuration might be the explicit LVM filter on the multipath 
> device:
>     filter = [ "a|/dev/mapper/360060e80108346e004d42aae00000001|", "r|.*|"  ]
> So maybe in standard configuration the missing load of the multipath module 
> might not result in missing rootfs as the component devices /dev/sdXX are 
> present and lvm silently uses one of these and ignores the duplicate pvs of 
> the other present paths.

That would lead to trouble if you have outages. Also, if you were
multiple paths to the map, now that is gone.  You will effectively only
be using one single path. This is wrong. You should always use the
multipathed map.

Ritesh Raj Sarraf
RESEARCHUT - http://www.researchut.com
"Necessity is the mother of invention."

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