[pve-devel] ZFS alternatives

Gandalf Corvotempesta gandalf.corvotempesta at gmail.com
Sun Feb 25 17:36:09 CET 2018


Planning to add doesn't mean that it was added
If I remember properly, no a single line of code was written up to
today....

Il 25 feb 2018 5:24 PM, "Michael Bellerue" <michael.bellerue at gmail.com> ha
scritto:

> Online expansion was recently added to OpenZFS for RAID-Z.
>
> https://www.freebsdfoundation.org/blog/openzfs-raid-z-
> online-expansion-project-announcement/
>
>
> On Sun, Feb 25, 2018 at 6:47 AM, Gandalf Corvotempesta <
> gandalf.corvotempesta at gmail.com> wrote:
>
> > I do that quite often.
> > Starting with a small number of expansive disks (like SSDs or NVMEs) and
> > being able to expand on the fly when needed, allows me to keep running
> cost
> > as low as possible
> >
> > With zfs this is not possible (in a simple way) thus you have to start
> with
> > the proper number of disks that you plan to use for some following  years
> >
> > Il 25 feb 2018 1:42 PM, "Andreas Steinel" <a.steinel at gmail.com> ha
> > scritto:
> >
> > > On Sat, Feb 24, 2018 at 11:16 AM, Gandalf Corvotempesta
> > > <gandalf.corvotempesta at gmail.com> wrote:
> > > > In example, you can add/remove single disks
> > > > You can change from any raid level to any raid level on the fly with
> no
> > > > downtime or loss of redundancy
> > > > You can grow /shrink a volume
> > >
> > > Good points, especially the shrink that, that does indeed currently
> > > not work in ZFS. Yet I have to say, I'd never added a single disk in
> > > an enterprise setup nor changed a RAID level on the fly. How often did
> > > you do the latter? I just add at least one shelf to existing storage
> > > boxes.
> > > _______________________________________________
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> > >
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>
>
>
> --
> Michael Bellerue
> michael.bellerue at gmail.com
> 651.900.3068
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