I think your problem might be the snamirror release on the source. That removes the snapmirror baseline snapshot on the source, so if there are no other snapshots in common, resync is impossible.
The procedure tmac outlined has worked for us across several hundred DP to XDP conversions.
John
On Fri, Jan 04, 2019 at 12:36:41PM +1100, Peter D. Gray wrote:
Hi people,
We are heavy users of snapmirror DR.
We started to convert those relations to XDP from DP.
We used:
- break snapmirror
- snapmirror release on source
- snapmirror delete on target
- wait (no idea what goes on behind the scenes here)
- snapmirror create -destination-path <path> -type XDP -policy MirrorAllSnapshots -identity-preserve true
- source-vserver <name> -source-cluster <name>
- snapmirror resync -destination-path <path>
This works a treat unless you have unprotected volumes.
If there are source volumes flagged unprotected and therefore not on the destination vserver you appear to be doomed. We have found no way to ever resynmc the source to destination vservers.
What you up wirth is something like:
Cluster Source Destination State Status Policy Progress Size Lag SRC svm-esx: svm-esx-dr: Broken-off Idle MirrorAllSnapshots - 39GB - SRC svm-esx:esx_03 svm-esx-dr:esx_slinux_03 Broken-off Idle MirrorAllSnapshots - - - SRC svm-esx:esx_04 svm-esx-dr:esx_slinux_04 Broken-off Idle MirrorAllSnapshots - - - SRC svm-esx:esx_sscratch_00 svm-esx-dr:esx_sscratch_00 Uninitialized Idle MirrorAllSnapshots - - - SRC svm-esx:esx_sscratch_01 svm-esx-dr:esx_sscratch_01 Uninitialized Idle MirrorAllSnapshots - - - SRC svm-esx:esx_10 svm-esx-dr:esx_10 Broken-off Idle MirrorAllSnapshots - - - SRC svm-esx:esx_10 svm-esx-dr:esx_11 Broken-off Idle MirrorAllSnapshots - - - SRC svm-esx:esx_10 svm-esx-dr:esx_12 Broken-off Idle MirrorAllSnapshots - - -
The above is hand edited so ignore any errors. You get the idea.
No amount of stuffing around (and there has been a lot) has ever go this relationshp to work properly again.
Anyine else seen this and/or have a solution.
We have guessed that the unprotected flag is no longer supported which is annoying in itself.
Regards, pdg
Peter Gray Ph (direct): +61 2 4221 3770 Information Management & Technology Services Ph (switch): +61 2 4221 3555 University of Wollongong Fax: +61 2 4229 1958 Wollongong NSW 2522 Email: pdg@uow.edu.au Australia URL: http://pdg.uow.edu.au
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