Isilon SyncIQ snapshot big size

Question

Hi all!Recenlty we have some issues (about all snapshot ID size) with some sync policies throught syncIQ.In a concrete case we have change only the destination folder path from one already created. I understand that the policty ID and Snapshot ID it remains the same.Why the snapshot associated with this policty it grew up so much after it was applied the new modification?- (In 12 hours it was grow up from 3Tb to 6Tb)- It seems that it's a bad practice it isn't create a brand new policy if not re-use an existing syncIQ policy. What may make sense with this issue?What can it was happenning with this snapshot? Many thanks for the help. Regards.

DELL-Sam L · Answer

Hello InfraMED,

When you made the change to the policy a treewalk sync runs, and will rewrite the data. What you can do is to set the diff_sync option before running the reset policy so that data which already exists on the target is not written to prevent the SIQ-Failover snapshot from growing.

# isi sync policy modify --diff_sync=on

Please let us know if you have any other questions.

InfraMED · Answer

Many thanks @DELL-Sam L .

It seems that for our currently version from OneFS (8.0.0.7) that command it doesn't exist.

I have try with this option:

--target-compare-initial-sync

Does it the same feature that the other option?

Thanks.

Best regards.

Isilon

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