* Subvolume level allocation policy
@ 2011-10-23 18:50 Phillip Susi
2011-10-23 18:52 ` Hugo Mills
2011-10-24 9:44 ` Jan Schmidt
0 siblings, 2 replies; 3+ messages in thread
From: Phillip Susi @ 2011-10-23 18:50 UTC (permalink / raw)
To: linux-btrfs
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Is it ( yet? ) possible to manipulate the allocation policy on a
subvolume level instead of the fs level? For example, to make / use
raid1, and /home use raid0? Or to have / allocated from an ssd and
/home allocated from the giant 2tb hd.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Subvolume level allocation policy
2011-10-23 18:50 Subvolume level allocation policy Phillip Susi
@ 2011-10-23 18:52 ` Hugo Mills
2011-10-24 9:44 ` Jan Schmidt
1 sibling, 0 replies; 3+ messages in thread
From: Hugo Mills @ 2011-10-23 18:52 UTC (permalink / raw)
To: Phillip Susi; +Cc: linux-btrfs
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On Sun, Oct 23, 2011 at 02:50:50PM -0400, Phillip Susi wrote:
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> Is it ( yet? ) possible to manipulate the allocation policy on a
> subvolume level instead of the fs level? For example, to make / use
> raid1, and /home use raid0? Or to have / allocated from an ssd and
> /home allocated from the giant 2tb hd.
Not yet, sorry. It's planned, but nobody's got around to
implementing it.
Hugo.
--
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: Subvolume level allocation policy
2011-10-23 18:50 Subvolume level allocation policy Phillip Susi
2011-10-23 18:52 ` Hugo Mills
@ 2011-10-24 9:44 ` Jan Schmidt
1 sibling, 0 replies; 3+ messages in thread
From: Jan Schmidt @ 2011-10-24 9:44 UTC (permalink / raw)
To: Phillip Susi; +Cc: linux-btrfs
On 23.10.2011 20:50, Phillip Susi wrote:
> Is it ( yet? ) possible to manipulate the allocation policy on a
> subvolume level instead of the fs level? For example, to make / use
> raid1, and /home use raid0? Or to have / allocated from an ssd and
> /home allocated from the giant 2tb hd.
At least the latter can be achieved with speed profiles. I worked on
those together with Arne Jansen who sent patches in January 2011,
subject "[PATCH] Btrfs: introducing speed profiles and dedicated log
devices".
I don't assume they apply nowadays without a major rework, though. We
should get those patches merged sometime.
-Jan
^ permalink raw reply [flat|nested] 3+ messages in thread
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2011-10-23 18:50 Subvolume level allocation policy Phillip Susi
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