Add Datastore use rpool

[Dexter23]

Hi all

I have installed Proxmox Backup Server on a machine have only 2 HDD 2TB and in the installer i choose ZFS Mirror.

Now i have to create a datastore, i do right or not

I create a directory /backup and add a Datastore

Is correct this configuration or it's better create the backup folder under this path: /rpool/ROOT/pbs-1 ?

P.S I know it's better use a pool for OS and another for Datastore for Backup

 

[Dunuin]

I personally wouldn't create a datastore in a folder on the pools root. I would create a dataset first (for example zfs create rpool/backups) and then use the mountpoint of that dataset as a datastore. That way it is easier to backup your datstore using replication and its easier to manage snapshots and ZFS options.

 

[Dexter23]

Hi

But can there be problems? Or is it a personal matter?

Anyway what is the exact command to create the dataset?

So in my case could I create it here?

1) /rpool/ROOT/pbs-1/backup
2) /rpool/Backup

Choose a option

Thanks

 

[Dunuin]

I would use "/rpool/Backup" so its not inheriting ZFS options from PVEs ROOT dataset. But thats basically up to you how you want to manage your ZFS.

 

[Dexter23]

Ok i create zfs datatore rpool/Backup with this command: zfs create rpool/Backup and it's done.

The default option of the dataset are ok?

I attach the file with the option of zfs

Thank you

 

[Dunuin]

Defaults should be fine. To optimize it a bit more you could increase the recordsize to 1M as most chuncks will be over 1MB so there is less overhead caused by metadata. And I would enable relatime.

zfs set recordsize=1M rpool/Backup
zfs set atime=on rpool/Backup
zfs set relatime=on rpool/Backup

 

[Dexter23]

Hi and thanks for reply

Today i'm connect to ssh on pbs to do the configuration you mention above, and surprise if i put the command zfs list i don't see anymore the dataset /rpool/Backup i create yesterday, i don't understand why it's disappear...

And the pbs doesn't reboot





But the PBS datastore seems online: