Migration from the KQ Implementation
gordan.bobic at gmail.com
Wed May 4 20:58:32 EDT 2011
On 05/05/2011 00:07, Jason J. W. Williams wrote:
>> The 3 guiding principles of data retention are paranoia, paranoia and
> Agreed. Which is why we've got snapshots, backups, and zdb. :)
Snapshots won't do you any good if the pool is damaged in an unfortunate
way that stops it from reassembling.
Backups are of paramount importance, sure, but fsck is important, too,
especially when a fsck pass might take 10 minutes vs. 2 days for
restoring all the data from a backup (and the inevitable loss of
anything since the last backup.
I actually use lsyncd to trigger file syncing to a backup volume on
every write-close, and the backup volume is running CopyFS to ensure
that every version of the file that was ever saved (well, within reason,
space allowing) can be retrieved. But as I said, restoring from a backup
is much slower than fsck would be.
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