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On 04/22/2011 01:30 AM, Laurent Bigonville wrote:
<blockquote cite="mid:20110421220048.6e7230de@eldamar.bigon.be"
type="cite">
<pre wrap="">When I'm removing a LUN mapping (association to the machine) using the
SAN manager, it seems that udev is starting several:
</pre>
</blockquote>
What is a SAN Manager here? An external tool?<br>
<br>
Steps when unmapping a LUN is:<br>
* Ensure it has been freed from the initiator. (Includes FS, DM)<br>
* Unmap LUN on target<br>
* Rescan scsi bus on Initiator<br>
<br>
<blockquote cite="mid:20110421220048.6e7230de@eldamar.bigon.be"
type="cite">
<pre wrap="">/sbin/kpartx -a -p -part /dev/dm-0
/sbin/blkid -o udev -p /dev/dm-0
these process are in D (interruptible sleep) state because the machine
cannot access them anymore.
Steps:
multipath -f lun_name
echo "- - -" ><i class="moz-txt-slash"><span class="moz-txt-tag">/</span>sys/class/scsi_host<span class="moz-txt-tag">/</span></i>$hba/scan
/etc/init.d/multipath-tools reload
multipath -ll now shows a mpath0 path that cannot be removed (mpath0:
map in use).
I guess this is a bad integration with udev/kpartx/dmsetup
</pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Ritesh Raj Sarraf
RESEARCHUT - <a class="moz-txt-link-freetext" href="http://www.researchut.com">http://www.researchut.com</a>
"Necessity is the mother of invention."
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