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Hello all, We would like to use GFS and GNBD for a SAN setup, but I am
having trouble setting up the multipath. Currently I have three GNBD servers
mounting the storage and exporting the volumes, I read the information in the
post from the previous thread but I am having trouble finding the correct
values to echo into Dmsetup, example from the thread below: https://www.redhat.com/archives/linux-cluster/2005-April/msg00062.html I found references for > echo "0 167772160 multipath 0 0 1 1 round-robin 0 2 1 251:0 1000 251:1 1000 " | dmsetup create dm0> (251:0 ist the major:minor id of /dev/gnbd0)
I can see the major:minor blockid and the size from
/sys/block/gnbd0 & gnbd1 so my attempt looks as so: > echo "0 2293981184 multipath 0 0 1 1 round-robin 0 2 1 251:0 1000 251:1 1000 " | dmsetup create dm0> (251:0 ist the major:minor id of /dev/gnbd0)
Which gives me an error of: Device-mapper ioctl cmd 9 failed: Invalid argument What am I doing wrong? Also the vaules from above
specifically the “ 0 0 1 1 & 0 2 1” & “1000”
from the previous post can someone clarify where these are coming from? We are using a vanilla kernel-2.6.12 with from kernel.org
with the cluster software from CVS stabile for 2.6.12, from the path provided
at sources.redhat.com/cluster. Kernel Params: CONFIG_DM_MULTIPATH=m OS=CENTOS4 Brian Urrutia System Administrator Price Communications Inc. |
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