Re: How to make CephFS a tiered file system?

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Hi,

could you elaborate what you mean with "re-layout"?

Thanks,
Manuel

On Tue, Jul 20, 2021 at 10:36 PM Nathan Fish <lordcirth@xxxxxxxxx> wrote:

> You are welcome! Just realized I didn't CC the list properly.
>
> On Tue, Jul 20, 2021 at 12:18 PM huxiaoyu@xxxxxxxxxxxx
> <huxiaoyu@xxxxxxxxxxxx> wrote:
> >
> > Hi, Nathan,
> >
> > thanks a lot for the suggestions. Indeed it looks quite feasible with
> re-layout
> >
> > best regards,
> >
> > samuel
> >
> > ________________________________
> > huxiaoyu@xxxxxxxxxxxx
> >
> >
> > From: Nathan Fish
> > Date: 2021-07-20 00:42
> > To: huxiaoyu@xxxxxxxxxxxx
> > Subject: Re:  How to make CephFS a tiered file system?
> > https://docs.ceph.com/en/latest/cephfs/file-layouts/
> >
> > Make a fast pool and a slow pool, set the fast pool as the default
> > layout at the top level, then have a job look for old files and
> > re-layout them? Should work.
> >
> > On Mon, Jul 19, 2021 at 5:28 PM huxiaoyu@xxxxxxxxxxxx
> > <huxiaoyu@xxxxxxxxxxxx> wrote:
> > >
> > > Dear Cepher,
> > >
> > > I have a requirement to use CephFS as a tiered file system, i.e. the
> data will be first stored onto an all-flash pool (using SSD OSDs), and then
> automatically moved to an EC coded pool (using HDD OSDs) according to
> threshold on file creation time (or access time). The reason for such a
> file system is due to the fact that, files are created and most likely
> accessed within the first 6 months or 1 year, and after that period, those
> files have much less chance to be accessed and thus could be moved to a
> slower and cheap pool.
> > >
> > > Does CephFS already support such a tiered feature? and if yes, how to
> implement such feature with a pool of all SSD pool and a pool of EC-coded
> HDD pool?
> > >
> > > Any suggestion, ideas, comments are highly appreciated,
> > >
> > > best regards,
> > >
> > > samuel
> > >
> > >
> > >
> > > huxiaoyu@xxxxxxxxxxxx
> > > _______________________________________________
> > > ceph-users mailing list -- ceph-users@xxxxxxx
> > > To unsubscribe send an email to ceph-users-leave@xxxxxxx
> >
> _______________________________________________
> ceph-users mailing list -- ceph-users@xxxxxxx
> To unsubscribe send an email to ceph-users-leave@xxxxxxx
>
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