[dm-devel] Changing SAN vendors
Allen, Jack
Jack.Allen at mckesson.com
Tue Feb 3 23:44:57 UTC 2009
Hello:
Our IT group has decided to switch SAN Vendors. The switch over
for a couple of systems has gone fine, but I have some questions on some
things that have changed.
First a little information on how the switch over is taking
place. The old SAN is a EMC CX and the new SAN is a HP XP. The system is
connected to a SAN switch which is then connected to both SANs. We shut
down the system, and then rezone the switch/SAN to access the XP now
instead of the CX. The XP passes through all the I/O request to the CX.
When we know the data can be seen correctly, they do some commands that
copies the data from the CX to the XP and then the I/O takes place on
the XP from that point on. All this works fine.
When only connected to the CX, I had /dev/mapper/mpath1 and
/dev/mapper/mpath2. After the reboot and rezoning /dev/mapper/mpath1 and
/dev/mapper/mpath2 are gone and /dev/mapper/mpath3 and
/dev/mapper/mpath4 are there. LVM finds the Volume Group and all Logical
Volumes with no problem.
My question is what do I have to change in some configuration
file or what ever to make /dev/mapper/mpath1 and /dev/mapper/mpath2 be
in place instead of /dev/mapper/mpath3 and /dev/mapper/mpath4?
I know this is not creating any real problem, but it is kind of
misleading, because it looks like 2 paths are missing.
-----
Thanks
Jack Allen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/dm-devel/attachments/20090203/10b89257/attachment.htm>
More information about the dm-devel
mailing list