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

[Gordan Bobic]

On Tue, 16 Oct 2007, Wendy Cheng 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:

Err - possibly a misunderstanding, but GFS/GFS2 doesn't require LVM/CLVM. 
You can run on a raw device without volume management.

Gordan