LMV Snapshots

mike ledoux mwl+gnhlug at alumni.unh.edu
Thu Nov 16 12:29:06 EST 2006


On Thu, Nov 16, 2006 at 05:25:47PM +0000, klussier at comcast.net wrote:
> I have a RHEL4 system (with all updates applied) that is using LVM. Every six hours, I have script that runs and does an LVM snapshot, mounts the snapshot, and rsyncs the data over to another system. I was looking through the logs, and I noticed some disturbing messgaes that I can't seem to find anything about. The LVM snapshot is created without incident. However, when I mount it, I get this in syslog:
> 
> Nov 16 12:00:04 postal kernel: kjournald starting.  Commit interval 5 seconds
> Nov 16 12:00:04 postal kernel: EXT3 FS on dm-3, internal journal
> Nov 16 12:00:05 postal kernel: EXT3-fs: dm-3: 109 orphan inodes deleted
> Nov 16 12:00:05 postal kernel: EXT3-fs: recovery complete.
> Nov 16 12:00:05 postal kernel: EXT3-fs: mounted filesystem with ordered data mode.

I've seen this sort of thing when the snapshot was made while writes
were happening on that filesystem.  Are you sure nothing is writing
to that FS when the snapshot is taken?

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