Version Flexible SnapMirror Not Transferring All Snapshots

[TMADOCTHOMAS]

We use version flexible snapmirror for all SnapMirror jobs, and we use a custom policy that includes the "all_source_snapshots" label. I recently set up two new volumes on a 9.3 system and replicated them to a 9.2 system. They worked fine until I needed to rename the source and destination volumes. After that change, the snapmirror jobs fail when run on a schedule (they work most of the time when I run them manually the next day). The errors complains that the snapmirror snapshot already exists on the destination. Even weirder, I just noticed that not all of the regular snapshots are being sent. There are 7 snapshots retained on both volumes, but only 5 of them show up for one of them and 6 for the other. Any ideas?

[paul_stejskal]

How big are the snapshots? My first guess is high change rate. Perhaps the snaps aren't rolling off fast enough if they are huge.

[TMADOCTHOMAS]

Thanks for replying Paul. The snapshots are very small, only MB in size. What makes it weirder is the missing snapshots are in the middle ... for example snapshots 0 and 1 are replicated, 2 is skipped, then 3 - 6 appear. Replication on one of the volumes failed last night. When I ran it this morning manually it was fine.

[paul_stejskal]

We probably need to look at some logs. Would it be possible to open a case?

If you can maybe share some of the snapmirror log files. If you aren't sure a case would be able to expedite troubleshooting.

[TMADOCTHOMAS]

Thanks Paul. Yeah it probably makes sense just to open a case. I will do that. Thanks for the help!

[paul_stejskal]

Sure thing. Glad to help.