SnapRevert not working

Question

Hi There,

we have attempted to restore a directory using snaprevert however it is always failing, it seems to be across our cluster. we have not set a domainmark in advanced of filling the directories with data. is DomainMark a compulsory step before a snapshot can be restored with SnapRevert?

we can see the data in the snapshots and can manually cp -r /ifs/.snap/path/to/files /ifs/target/path however that is a very slow method ~(90 mins for 40GB, unusable method for a sizeable restore)

When attempting to run domainmark at same level as the snapshot that process also seems to fail. I assumed domainmark just put a READ ONLY flag on the dir whist it was being restored and was not an actual requirement?

if it is, then we are going to be busy running a lot of domainmarks across our cluster as we have over 100 policies. I have tested on the isilon simulator and I am getting similar results

DELL-Josh Cr · Answer

Hi, Thanks for your question.  This may help https://dell.to/3TSsfQm What version of OneFS are you on? Let us know if you have any additional questions.

storageSysAdmin · Answer

OneFS: 9.4.0.4

Dell support identified that SyncIQ service was disabled, once enabled domain mark and snaprevert have started working.

One question we still have is is domainmark required to be run in advance of a snapshot restore? if so why is it not part of the process when creating a snapshot schedule? furthermore what is the best practice, can a domainmark just be run quickly on demand when you need to restore data, even if you have 15million files in a DIR? or should you do it in advance for every single snapshot schedule policy that you have on your cluster?

Thanks,

DELL-Sam L · Answer

Hello storageSysAdmin,

Did you create a snap revert domain prior to creating your snapshot schedule? DomainMark is done during those steps. Here is the link to the web administrator guide in case you need it. https://dell.to/3FmGpFu

Isilon

SnapRevert not working

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