[Ocfs2-users] Mounting multiple clones

[Kendall, Kim]

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.oc
fs2.html
<http://oss.oracle.com/projects/ocfs2-tools/dist/documentation/tunefs.oc
fs2.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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