Will do!
On 2017-03-08 22:34, Craig Barratt wrote:
> Mph,
>
> I probably will write a script that implements the hybrid upgrade, so even if
> you archive your V3 backups, please keep some of them around for testing :).
>
> Craig
>
> On Wed, Mar 8, 2017 at 7:55 AM, Michael Huntley <mich...@huntley.net> wrote:
>
> Oh those pesky deltas!
>
> I slept on it; it's better to make a break with the past. I'm going to tar
> up the old data+hardlinks and put it to cold storage.
>
> Time is a finite resource so I'd rather move forward than get stuck in the
> weeds of the past.
>
> Pavel - have you considered using tar+tape to archive your data? I deal with
> CPA's and lawyers so everything must be saved basically forever but it
> doesn't mean the data must be instantly available. Just a thought.
>
> Cheers!
>
> mph
>
> On 2017-03-07 23:19, Craig Barratt wrote:
> There are two options to implement this:
>
> * truly convert v3 backups to v4 format. This is quite complex since forward
> deltas (ie, incrementals) would have to be converted into reverse deltas;
> there are lots of cases to consider and testing them all would take a lot of
> time. The effort and risk (of messing up an old backup) doesn't seem worth
> it.
> * hybrid - convert just the backup storage from V3 to V4, but keep the V3
> logical dependency (ie: replace the V3 attrib file + hardlinks in each
> directory with just a V4 attrib file). This is a good bit easier and lower
> risk, as each directory can be updated in a self-contained manner. The
> testing would need to ensure that V3 viewing / restore etc works with this
> hybrid storage.
>
> If there is enough interest I would consider implementing the hybrid
> approach. But I'm working on rsync-bpc-3.1.2 right now.
>
> Craig
>
> On Tue, Mar 7, 2017 at 6:41 PM, Michael Huntley <mich...@huntley.net> wrote:
>
> Hi Craig -
>
> among the billion other things to do in life - is this reasonably possible?
> I looked at the perl and came to the considered conclusion, I'm just not a
> perl guy. However, it would be great to convert older backups to v4 - that
> would reduce my workload on BTRFS snapshops, etc. No hardlinks makes moving
> large sums of data so much easier......
>
> 2cents.....
>
> mph
>
> On 2017-03-06 01:58, Pavel Hofman wrote:
> Hello,
>
> please is it possible somehow to script the BackupPC_backupDuplicate
> tool to be able to convert not only the last v3 backup to v4, but also
> all previous backups? I would run the script in the background.
>
> The intention is migrating from XFS to ZFS for server consolidation and
> I am afraid I need to get rid of the hardlinks in the 10 yrs of
> historical backups.
>
> I have read about running an arbitrary filesystem over ZFS block device,
> but I am afraid of poor performance.
>
> Thanks a lot.
>
> Best regards,
>
> Pavel.
>
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