[PVE-User] ZFS: Limited usages ?

Petric Frank pfrank at gmx.de
Sun Apr 29 00:50:40 CEST 2018


Hello,

Am Samstag, 28. April 2018, 22:51:43 CEST schrieb Christian Kivalo:
> On 2018-04-28 17:52, Petric Frank wrote:
> > Hello,
> > 
> > Am Samstag, 28. April 2018, 07:14:25 CEST schrieb Christian Kivalo:
> >> On April 27, 2018 11:30:09 PM GMT+02:00, Petric Frank <pfrank at gmx.de>
> >> 
> >> wrote:
> >> >> > running PVE GUI 5.1-51
> >> >> > 
> >> >> > I've mounted a ZFS storage (Datacenter -> Storage).
> >> >> > 
> >> >> > Is there a reason why the GUI allows to select Disk Image and
> >> >
> >> >Container
> >> >
> >> >> > only ?
> >> >> > 
> >> >> > No Backup, ...
> >> >> > 
> >> >> > In my means ZFS is a file system like for example ext4.
> >> >> 
> >> >> you can create a dataset ("zfs create ...") and then configure it as
> >> >> directory storage with appropriate content types if you want to
> >> >
> >> >backup
> >> >
> >> >> to a ZFS dataset.
> >> >
> >> >The mounted ZFS volumes are datasets. Created by zfs create
> >> ><Pool>/<Dataset>.
> >> >The current type is filesystem.
> >> >
> >> >I'm not an expert in ZFS - how to set a content type on a dataset ?
> >> 
> >> In proxmox go to Datacenter -> Storage, select your storage and click
> >> on
> >> Edit and there you can select to content types for this storage.
> > 
> > Here i am presented with a list which contains "Disk Images" and
> > "Container"
> > only !
> > No other selections were possible because they are not listed. "ISO
> > image",
> > "Container Template" and "VZDump backup file" are NOT in the drop down
> > list.
> > 
> > Does this limitation have a the reason - either intentional or a bug ?
> 
> See https://pve.proxmox.com/wiki/Storage and the links to the storage
> types at the end of that site.
> 
> On a ZFS storage proxmox creates ZVOLs to storage VM disk data, it's not
> used as file based storage and thus is not suitable as a backup target.
> To use a ZFS filesystem as backup target you need to create "Directory"
> type storage in proxmox which points to a directory on your ZFS
> filesystem. For this storage type you can select the content type
> "backup".

That is the info i missed. Understood.

I've selected zfs when defining it in the GUI because of the underlying file 
system. The side effects of this decision was not known to me.

Thanks for your explanation.

regards





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