Have a Dell PowerEdge 6850 server with 2 x Emulex LP1050 HBAs with the
latest firmware and BIOS connected to EMC CX300 storage system via 2 x SAN
switches. It's a fully redundant SAN fabric. A LUN sized and named 112GB is
dedicated to such server running RHEL4 U2. Here are some more details...
[root@devapp2 ~]# multipath -ll
112GB (36006016064e116004a8cdf7cd8a9da11)
[size=112 GB][features="1 queue_if_no_path"][hwhandler="1 emc"]
\_ round-robin 0 [active]
\_ 1:0:0:0 sdb 8:16 [ready ][active]
\_ round-robin 0 [enabled]
\_ 1:0:1:0 sdc 8:32 [ready ][active]
\_ round-robin 0 [enabled]
\_ 2:0:0:0 sdd 8:48 [ready ][active]
\_ round-robin 0 [enabled]
\_ 2:0:1:0 sde 8:64 [ready ][active]
Such LUN is presented under "/dev" as "dm-0". Also "/dev/mapper/112GB"
device file is available. However I can't see partitions created on such LUN
without executing "kpartx" command manually.
[root@devapp2 ~]# kpartx -va /dev/dm-0
add map dm-0p1 : 0 9783522 linear /dev/dm-0 63
I tried to modify script files under /etc/udev/rules directory but no luck.
How is it possible to make partition(s) available on boot time?
BTW, fail-over and fail-back operations are working flawless.
Thanks.
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