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Re: [Linux-cluster] Linux clustering (one-node), GFS, iSCSI, clvmd (lock problem)



Paul Risenhoover wrote:

THOUGHTS:

I admit I don't know much about clustering, but from the evidence I see, the problem appears to be isolated to clvmd and iSCSI, if only for the fact that my direct-attached clustered volumes don't exhibit the symptoms.


Will let LVM folks comment on rest of the issues. However, if you intend to use this as single node case, are you aware that both GFS and GFS2 support a "lock_nolock" protocol that doesn't require CLVMD ? It can be run on a plain storage device (say /dev/sda1) and doesn't have any locking overhead. Do a "man gfs_mkfs" and search for "LockProtoName". A sample mkfs-mount command looks like the following:

shell> gfs_mkfs -t my_cluster:gfs1 -p lock_nolock -j 1 /dev/sda1
shell> mount -t gfs /dev/sda1 /mnt/gfs1

-- Wendy


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