Hi,
I got few servers (IBM HS20,HS21 blades, IBM xSeries 3650 & others)
connected to a dual fabric san throught Qlogic HBA's (23xx, 24xx).
Multipathing is done with device-mapper-multipath.
On CentOS 4.x i can scan for new scsi devices without any problems, get
them up with multipathing & use them without any problems.
However, after i started installing CentOS 5.1 (did not notice this
problem with CentOS 5) i cannot seem to rescan without huge problems.
Sometimes when i rescan after presenting a new LUN to the server nothing
is detected, and sometimes the device comes in without any problems at
all. Sometimes i even loose some paths after rescanning.....again, i had
no problems at all with CentOS 4.x.
I use the Qlogic script (Dynamic Target and LUN Discovery
<http://support.qlogic.com/support/EULATemplate/Template.aspx?TemplateID=9&path=http://download.qlogic.com/ms/56614/ql-dynamic-tgt-lun-disc-2.2.tgz>
2.2) to scan for new luns.
Has anyone had any issues with scanning for new devices off san after
upgrading to 5.1 ?
Thanks,
Finnur
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