Hello,
On Wed, Aug 17, 2011 at 03:18:51PM +0200, Schneck Dennis CIS SDE wrote:
> is there a way to get multipath working with Debian 6 ?
>
> If I define on both VIOS a VSCSI Device for the harddisk
>
> I see 2 hardisks /dev/sda and /dev/sdb
>
> What did I wrong ?
you probably need to put an configuration entry into /etc/multipath.conf
Personally i did the entries based on UUID for each disk like this:
root@host:~> apt-get install scsitools multipath-tools
root@host:~> /sbin/scsiinfo -l
/dev/sda /dev/sdb
root@host:~> /sbin/scsiinfo -s /dev/sda
Serial Number '332136005076801918127980000000000023C04214503IBMfcp'
root@host:~> /sbin/scsiinfo -s /dev/sdb
Serial Number '332136005076801918127980000000000023C04214503IBMfcp'
root@host:~> vi /etc/multipath.conf
multipaths {
multipath {
wwid 36005076801918127980000000000023C
}
}
root@host:~> /sbin/multipath -F
root@host:~> /sbin/multipath -ll
mpath0 (36005076801918127980000000000023c) dm-0 AIX ,VDASD
[size=36G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=1][enabled]
\_ 0:0:1:0 sda 8:0 [active][ready]
\_ round-robin 0 [prio=1][active]
\_ 1:0:1:0 sdb 8:16 [active][ready]
The only catch could be that your device names ("sda" and "sdb") match
the regex in the blacklist section of /etc/multipath.conf.
HTH & best regards,
Frank Fegert
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