[Ocfs2-users] Mounting multiple clones

[Sunil Mushran]

http://oss.oracle.com/projects/ocfs2-tools/news/article_1.html

tune.ocfs2 -U was added in ocfs2-tools 1.2.2. Check yast if SUSE
is shipping something later than 1.2.1 on SLES9 SP3.

Else, explore building the rpm on your setup. The tarball is there.

Kendall, Kim wrote:
>
> We have a production environment (3 vols) that we take clones of (EMC 
> symclone) for dev and test environments.
>
> Host: SuSE 9.3
>
> Kernel: 2.6.5-7.282-smp
>
> OCFS2: ocfs-tools-1.2.1-4.2
>
> When a single clone environment (all 3 volumes) is mounted on a dev 
> system it mounts fine. If a second clone set is created (another 3 
> volumes) and presented to a host that has an environment already 
> mounted, I can see the new volumes with no problem. (cat 
> /proc/partitions as well as mounted.ocfs2 –f)
>
> When I attempt to mount the second set of volumes (while the first set 
> is still mounted up) I get an error:
>
> mount.ocfs2: File exists while mounting /dev/emcpowerj on 
> /oradata/erp07/datafiles/1
>
> I've used tunefs.ocfs2 to give them unique labels, but the UUID’s are 
> the same as production since they are clones (so each “set” matches 
> each other’s UUID’s):
>
> #mounted.ocfs2 -d
>
> Device FS UUID Label
>
> /dev/sdb ocfs2 016b8942-7176-45d2-bd94-457a34d78550 erp07_dbf1
>
> /dev/sdc ocfs2 b1df8ba0-e4d2-427d-8990-adef0c9eea40 erp07_dbf2
>
> /dev/sdd ocfs2 afaef410-ae8d-4136-b072-f416473b0c02 erp07_dbf3
>
> /dev/sde ocfs2 016b8942-7176-45d2-bd94-457a34d78550 erp01_dbf1
>
> /dev/sdh ocfs2 b1df8ba0-e4d2-427d-8990-adef0c9eea40 erp01_dbf2
>
> /dev/sdk ocfs2 afaef410-ae8d-4136-b072-f416473b0c02 erp01_dbf3
>
> /dev/emcpowerj ocfs2 016b8942-7176-45d2-bd94-457a34d78550 erp07_dbf1
>
> /dev/emcpowerk ocfs2 b1df8ba0-e4d2-427d-8990-adef0c9eea40 erp07_dbf2
>
> /dev/emcpowerl ocfs2 afaef410-ae8d-4136-b072-f416473b0c02 erp07_dbf3
>
> /dev/emcpowera ocfs2 016b8942-7176-45d2-bd94-457a34d78550 erp01_dbf1
>
> /dev/emcpowerb ocfs2 b1df8ba0-e4d2-427d-8990-adef0c9eea40 erp01_dbf2
>
> /dev/emcpowerc ocfs2 afaef410-ae8d-4136-b072-f416473b0c02 erp01_dbf3
>
> It appears that the UUID name is picked up from the production volumes 
> and OCFS will only allow one UUID to mount at any given time.
>
> I saw in the documentation 
> (http://oss.oracle.com/projects/ocfs2-tools/dist/documentation/tunefs.ocfs2.html) 
> that tunefs.ocfs2 had a “--uuid-reset” option, but it isn’t in the 
> version I’m running (according to MY man pages).
>
> Is there a way to assign a new UUID to a volume (without destroying 
> the volume)?
>
> Thanks!
>
> Kim
>
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