Re: [PATCH] f2fs: support multiple devices

2016-11-10 Thread Anand Jain
(this is deviating from the subject, sorry about that) Pretty much, if you're using just raid1 mode, without compression, on reasonable storage devices, things are rock-solid relative to the rest of BTRFS. IMO, BTRFS volume manger feature is incomplete and there is RAID1 critical bug which

Re: [PATCH] f2fs: support multiple devices

2016-11-10 Thread Austin S. Hemmelgarn
On 2016-11-09 21:29, Qu Wenruo wrote: At 11/10/2016 06:57 AM, Andreas Dilger wrote: On Nov 9, 2016, at 1:56 PM, Jaegeuk Kim wrote: This patch implements multiple devices support for f2fs. Given multiple devices by mkfs.f2fs, f2fs shows them entirely as one big volume under one f2fs instance

Re: [PATCH] f2fs: support multiple devices

2016-11-09 Thread Qu Wenruo
At 11/10/2016 06:57 AM, Andreas Dilger wrote: On Nov 9, 2016, at 1:56 PM, Jaegeuk Kim wrote: This patch implements multiple devices support for f2fs. Given multiple devices by mkfs.f2fs, f2fs shows them entirely as one big volume under one f2fs instance. Internal block management is very si

Re: [PATCH] f2fs: support multiple devices

2016-11-09 Thread Jaegeuk Kim
On Wed, Nov 09, 2016 at 03:57:53PM -0700, Andreas Dilger wrote: > On Nov 9, 2016, at 1:56 PM, Jaegeuk Kim wrote: > > > > This patch implements multiple devices support for f2fs. > > Given multiple devices by mkfs.f2fs, f2fs shows them entirely as one big > > volume under one f2fs instance. > > >

Re: [PATCH] f2fs: support multiple devices

2016-11-09 Thread Darrick J. Wong
On Wed, Nov 09, 2016 at 03:57:53PM -0700, Andreas Dilger wrote: > On Nov 9, 2016, at 1:56 PM, Jaegeuk Kim wrote: > > > > This patch implements multiple devices support for f2fs. > > Given multiple devices by mkfs.f2fs, f2fs shows them entirely as one big > > volume under one f2fs instance. > > >

Re: [PATCH] f2fs: support multiple devices

2016-11-09 Thread Andreas Dilger
On Nov 9, 2016, at 1:56 PM, Jaegeuk Kim wrote: > > This patch implements multiple devices support for f2fs. > Given multiple devices by mkfs.f2fs, f2fs shows them entirely as one big > volume under one f2fs instance. > > Internal block management is very simple, but we will modify block > alloca

[PATCH] f2fs: support multiple devices

2016-11-09 Thread Jaegeuk Kim
This patch implements multiple devices support for f2fs. Given multiple devices by mkfs.f2fs, f2fs shows them entirely as one big volume under one f2fs instance. Internal block management is very simple, but we will modify block allocation and background GC policy to boost IO speed by exploiting t