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List: linux-btrfs
Subject: Backup: Compare sent snapshots
From: GEO <1g2e3o4 () gmail ! com>
Date: 2014-03-30 8:58:13
Message-ID: 8465933.4bvG1Xk5zJ () linuxpc
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Hi,
I am doing backups regularly following the scheme of
https://btrfs.wiki.kernel.org/index.php/Incremental_Backup
It states we keep a local reference of the read only snapshot we sent to the
backup drive, which I understand.
But now I have a question: When I do a read only snapshot of home, send the
difference to the backup drive, keep it until the next incremental step, send
the difference to the backup drive, remove the old read only snapshot and so
on...
I wonder what happens if the read only snapshot I keep as a local reference
got corrupted somehow.
Then maybe too much difference would be sent which would not be dramatic, or
too less, which would be.
Is there a quick way I could compare the last sent snapshot to the local one,
to make sure the local reference is still the same?
Apart from that, imagine I somehow lost the local reference (e.g. delete it by
mistake), would there still be a way to sync the difference to the last sent
snapshot on the backup device?
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