[SOLVED] Storage space mismatches

[Urbaman]

Hi,

Sure this is one of the many times this comes up, but I'd need some insight on this.

I have a 4Tb SSD that I put on ZFS, to create a Datastore.

The datasrtore seems to only be 2.13Tb. Why?





Thank you.

 

[Dunuin]

Whats the output of zpool list -v, zfs list -o space and df -h?

 

[Urbaman]

root@pbs1:~# zpool list -v
NAME                                    SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
Backups                                3.62T  2.02T  1.60T        -         -    15%    55%  1.00x    ONLINE  -
  sda                                  3.64T  2.02T  1.60T        -         -    15%  55.8%      -    ONLINE
rpool                                   232G  21.8G   210G        -         -     8%     9%  1.00x    ONLINE  -
  nvme-CT250P5SSD8_203129FF2030-part3   232G  21.8G   210G        -         -     8%  9.38%      -    ONLINE
root@pbs1:~# df -h
Filesystem        Size  Used Avail Use% Mounted on
udev               12G     0   12G   0% /dev
tmpfs             2.4G  1.1M  2.4G   1% /run
rpool/ROOT/pbs-1  215G   12G  204G   6% /
tmpfs              12G     0   12G   0% /dev/shm
tmpfs             5.0M     0  5.0M   0% /run/lock
efivarfs          320K   61K  255K  20% /sys/firmware/efi/efivars
rpool             204G  128K  204G   1% /rpool
Backups           2.0T  457G  1.5T  24% /mnt/datastore/Backups
rpool/ROOT        204G  128K  204G   1% /rpool/ROOT
tmpfs             2.4G     0  2.4G   0% /run/user/0

I see it's not all allocated?

 

[Dunuin]

zfs list -o space would give more information on refreservation, snapshots and so on.

 

[Urbaman]

zfs list -o space
NAME              AVAIL   USED  USEDSNAP  USEDDS  USEDREFRESERV  USEDCHILD
Backups           1.44T  2.08T     1.60T    487G             0B       917M
rpool              203G  21.6G        0B     96K             0B      21.6G
rpool/ROOT         203G  21.4G        0B     96K             0B      21.4G
rpool/ROOT/pbs-1   203G  21.4G     9.83G   11.6G             0B         0B

 

[ubu]

Look at your snapshots

 

[Urbaman]

So, do I assume the 1.60T of snaps (if I rightly read USEDSNAP) are not shown in the GUI monitor?

I also assume they are linked or anyway tied to the backups.

Isn't it better to show the full situation on the monitor? Again, I know this must be the n-th time this comes up, sorry XD

 

[Dunuin]

So, do I assume the 1.60T of snaps (if I rightly read USEDSNAP) are not shown in the GUI monitor?

Yes.

I also assume they are linked or anyway tied to the backups.

As far as I know PBS isn't working with ZFS snapshots. So you probably created them yourself manually or you installed some third-party snapshot script.

To list ZFS snapshots: zfs list -t snapshot

 

[news]

And run from time to time zpool trim <pool-name>

 

[Urbaman]

Ok, I found out zfs-auto-snapshot was installed and configured!

Uninstalled and cleared all snapshots, also my vpe nodes had that package installed and configured, also cleared them.

Thank you very much for helping me finding out the hidden setting!