Yes, I'm very sure I have no V3 backups anymore.
$Conf{PoolV3Enabled} is still enabled. I'll disable it soon.
$Conf{BackupPCNightlyPeriod} = 16, since 2 days. Before it was 1.
😁️
Yesterday I've already deleted in ../*pool/?/:
1. all files with only 1 hardlink
2. all files which are only hardlinked with other files in pool or cpool
I didn't remove any file in ../*pool/??/ and I still have a list of all (2)
deleted files and where
they was linked too. So I'm able to restore any of them.
Now I don't have a single file left in ../*pool/?/🤭️
Tonight BackupPC_nightly run and have no errors.
Just 1.800 "admin : BackupPC_refCountUpdate: missing pool file". But this only
affects files that
are a few years old. I'm still investigating.
One question: Is it really true that backuppc V4 still need the old ../*pool/?/
directories or only
until $Conf{PoolV3Enabled} is disabled?
Have a great day 😊️
Matthias
Am Samstag, dem 16.08.2025 um 16:49 +0100 schrieb G.W. Haywood:
> Hi there,
>
> On Sat, 16 Aug 2025, [email protected] wrote:
>
> > Hello 2all :)
>
> :)
>
> > After a lot of issues, mostly because of insufficient file limit (I
> > need ulimit -n 100000 ??)
>
> Given 'a lot of issues' I'd be a little concerned that things might
> not be exactly as they should be in the pool.
>
> > ... I've migrated all of my backups into V4. I have no more backups
> > in V3-style but still have files in V3 pool and cpool.
> > ...
>
> First, are you sure that you've converted all your V3 backups to V4?
> If you still have backups which were made by BackupPC V3 and which
> have not been cnverted to V4 or expired (because of their age or for
> some other reason) then you still need them.
>
> Do you still have $Conf{PoolV3Enabled} set to a true value?
>
> In /etc/BackupPC/config.pl (or whatever your configuration file is),
> what value do you have for '$Conf{BackupPCNightlyPeriod}'?
>
> Depending on the value of those options, after N nightly runs (where N
> is some power of two), BackupPCNightly should delete all your *unused*
> pool V3 files. You shouldn't have to do it yourself. Take a look at
> sub processPendingDeletes in BackupPCNightly, you'll see that it looks
> for files with only one hard link and deletes them. There are one or
> two commented-out print statements in the file, you can uncomment them
> to try to get a bit more information, and maybe add a few of your own.
>
> Incidentally I've noticed that there's a mistake in the documentation,
> which I quote below:
>
> [quote]
> Secondly, if you run BackupPC_migrateV3toV4 on all your backups, the
> old V3 pool should be empty, except for old-style attrib files,
> which should all have only one link since no backups should
> reference them any longer. Before you turn off the V3 pool by
> setting $Conf{PoolV3Enabled} to 0, make sure BackupPC_nightly has
> run enough times (specifically, $Conf{PoolSizeNightlyUpdatePeriod}
> times) so that the V3 pool can be emptied. You could do this
> manually, but only if you are very careful to check that the
> remaining files only have one link.
> [/quote
>
> This references the value of $Conf{PoolSizeNightlyUpdatePeriod} and
> not $Conf{BackupPCNightlyPeriod}. The latter is what determines how
> many times you need to run BackupPC_nightly to delete all the unused
> files. It's on my TODO list.
>
> > Are this hardlinks required from backuppc V4 or can I delete the
> > files in V3 pool and V3 cpool?
>
> The thing which is bothering me is that your 'issues' might have left
> the pool in some inconsistent state. I'd be reluctant to delete files
> without being sure they weren't needed, so I wouldn't delete anything
> manually - just use the tools which BackupPC provides. You could stop
> BackupPC and run BackupPC_nightly by hand for example.
>
> If you want to live dangerously you might for example stop BackupPC;
> rename the V3 pool and cpool directories and perhaps even make them
> unreadable for the backuppc user to be sure; create empty directories
> with the same names, ownerships and permissions; restart BackupPC;
> and then try to find out if you broke anything.
>
_______________________________________________
BackupPC-users mailing list
[email protected]
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: https://github.com/backuppc/backuppc/wiki
Project: https://backuppc.github.io/backuppc/
