[PVE-User] Leftover replication snapshots?!

[PVE-User] Leftover replication snapshots?!

[Marco Gaiarin]

I've some VMs and LXCs with replica enabled between two nodes;
if i look at snapshopts i got (on both nodes):

 root@cnpve1:~# zfs list -r -t snapshot -o name,used,creation rpool/data
 NAME                                                          USED  CREATION
 rpool/data/subvol-123-disk-0@__replicate_123-0_1752453014__  84.4M  Mon Jul 14  2:30 2025
 rpool/data/subvol-124-disk-0@__replicate_124-0_1752453020__  21.3G  Mon Jul 14  2:30 2025
 rpool/data/subvol-126-disk-0@__replicate_126-0_1752662087__   232K  Wed Jul 16 12:34 2025
 rpool/data/subvol-128-disk-0@__replicate_128-0_1752662081__   280K  Wed Jul 16 12:34 2025
 rpool/data/vm-100-disk-0@__replicate_100-0_1752453009__      53.9M  Mon Jul 14  2:30 2025
 rpool/data/vm-101-disk-0@__replicate_101-0_1752662120__      6.27M  Wed Jul 16 12:35 2025
 rpool/data/vm-120-disk-0@__replicate_120-0_1752453000__         0B  Mon Jul 14  2:30 2025
 rpool/data/vm-121-disk-0@__replicate_121-0_1752468303__         0B  Mon Jul 14  6:45 2025
 rpool/data/vm-122-disk-0@__replicate_122-0_1752468303__       112M  Mon Jul 14  6:45 2025
 rpool/data/vm-131-disk-0@__replicate_131-0_1752662105__      3.09M  Wed Jul 16 12:35 2025

there's only one snapshot per disk, so seems to me that replica works as:

1) delete old snapshot
2) take snapshot
3) sync snapshot
4) apply snapshot to other node

But snapshot get not deleted. Why?


If i need temporary some space, can i safely delete all these snapshot
(clerly by hand, via 'zfs destroy')?


Thanks.

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Re: [PVE-User] Leftover replication snapshots?!

[Marco Gaiarin]

Mandi! Marco Gaiarin
  In chel di` si favelave...

> But snapshot get not deleted. Why?

I reply myself: these ssnapshot are aevidently an 'internal tool' to manage
replication.


> If i need temporary some space, can i safely delete all these snapshot
> (clerly by hand, via 'zfs destroy')?

No, these snapshot cannot be deleted, replica simply stop in error
if missing.
If deleted, the entire volume have to be deleted (in the destination replica,
of course) and replica have to be started by zero.

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