[clug] zfs on linux ... and state of btrfs

[Andrew Steele]

Can I expand/hijack this to ask what sre peoples real world experience of
btrfs?

I'm currently wrestling with a similar issue of what is the best migration
path off a home Solaris 11 zfs file server?

It seems I should go to btrfs but I see too many scary comments about it
not being production ready. What have been  people's experience? And what
distro should I pick? As my reading suggests I should use at least about a
3.4 kernel, I'm thinking of Fedora 19.

Thoughts?
Fozzy
On 23/07/2013 12:45 PM, "David C" <cottrill.david at gmail.com> wrote:

> 8Gb ram, only dedup and compression applied on some filesystems in the
> single pool.
> Initially I followed the warnings, and found they don't really impact my
> setup.
> The reason for zfs is the read/write caching, which turned a very lethargic
> setup into something good via a 64GB SSD zil and l2arc partition setup.
> So far there has been a minor performance boost with the changes. Nothing
> to get excited about though.
> On Jul 23, 2013 10:44 AM, "Richard C" <richard_c at tpg.com.au> wrote:
>
> > Chef Chef,
> >
> > Other than a quick "I told you so...", I'll skip on to asking about how
> > much RAM your server has? ZFS is renown for sucking up RAM in vast
> amounts
> > (relative to other filesystems). The FreeNAS peeps seem to think that
> 4-8GB
> > is a (barely) working minimum, and then add more for any application or
> ZFS
> > feature, you may be running [1]. I imagine that the Linux port is
> somewhat
> > more greedy.
> >
> > Your server is in danger of having more RAM than disk (not wrong per se,
> > but certainly unorthodox).
> >
> > Does btrfs have enough of the feautures that you want?
> >
> > Richard
> >
> > [1] http://doc.freenas.org/index.php/Hardware_Recommendations
> >
> >
> > On 19 July 2013 23:35, David C <cottrill.david at gmail.com> wrote:
> >
> >> Hello all,
> >> I replaced FreeBSD with Debian Wheezy tonight after a reasonably serious
> >> root drive failure.
> >> Given that all my data drives are ZFS and the Linux port is not
> optimised,
> >> would anyone like to offer an opinion about my NFS4 speeds, which are
> not
> >> optimised in FreeBSD.
> >>
> >> Of some note is that this system is built on an HP N40L microserver with
> >> (brace yourselves) 5400rpm 750GB disks.
> >>
> >> More of a hypothetical as I never really came to grips with managing
> >> FreeBSD, don't have any solid benchmarks on hand, and don't want to give
> >> up
> >> the ZFS goodies.
> >>
> >> Thanks for your opinions / advice on making it better.
> >> David
> >> --
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> >> linux at lists.samba.org
> >> https://lists.samba.org/mailman/listinfo/linux
> >>
> >>
> >
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