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Hello, I am trying to setup a redundant system using gnbd ( linux-iscsi
for now fiber if I can figure this out). Hardware and softwaredetails HP MSA100 SAN 3 gnbd servers mounting the storage via linux-scsi in a
backend lan & exporting to 3 test nodes All nodes import the gnbds, but in the event that one GNBD server
dies I want it to not affect the clients. OS Centos 4 – kernel.org kernel 2.6.12 Problems-> 1) multipath doesn’t appear to work with GFS 6.1
obtained from CVS Stable for latest kernel.org kernels. 2) LVM doesn’t allow duplicate PVs ( the SAN to be
created in the Volume group) i.e. [root@dell-1650-31 ~]#
vgcreate my_new_gfs /dev/gnbd/l108_sdata /dev/gnbd/l109_sdata Found duplicate PV
TbSaubq5Si2S1nrMbuMF620HPb6kFojE: using /dev/gnbd2 not /dev/gnbd0 Found duplicate PV
TbSaubq5Si2S1nrMbuMF620HPb6kFojE: using /dev/gnbd2 not /dev/gnbd0 Volume group
"my_new_gfs" successfully created [root@dell-1650-31 ~]# [root@dell-1650-31 ~]#
vgchange -a y my_new_gfs Found duplicate PV
TbSaubq5Si2S1nrMbuMF620HPb6kFojE: using /dev/gnbd2 not /dev/gnbd0 0 logical volume(s)
in volume group "my_new_gfs" now active [root@dell-1650-31
~]# Ideas-> Heartbeat –linux-HA for a dynamic ip in which the
nodes will mount via gnbd_import –I vip Thoughts? Can someone suggest a better route, or how they
might have accomplished this ? the idea is a failover to another gnbd server
should it one go down. I am open to hearing suggestions. Thanks in advance. Brian Urrutia System Administrator Price Communications Inc. |
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