Re: btrfs

On Sat, 2016-06-04 at 13:13 -0600, Chris Murphy wrote: > mdadm supports DDF. Sure... it also supports IMSM,... so what? Neither of them are the default for mdadm, nor does it change the used terminology :) Cheers, Chris. smime.p7s Description: S/MIME cryptographic signature

Re: RAID1 vs RAID10 and best way to set up 6 disks

On 06/03/16 20:59, Christoph Anton Mitterer wrote: On Fri, 2016-06-03 at 13:42 -0500, Mitchell Fossen wrote: Thanks for pointing that out, so if I'm thinking correctly, with RAID1 it's just that there is a copy of the data somewhere on some other drive. With RAID10, there's still only 1

WARNING: at /home/kernel/COD/linux/fs/btrfs/inode.c:9261 btrfs_destroy_inode+0x247/0x2c0 [btrfs]

Hi, Do I need to worry about this? Thanks. Linux nakku 4.6.0-040600-generic #201605151930 SMP Sun May 15 23:32:59 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux btrfs-progs v4.4 [73168.435290] [ cut here ] [73168.435308] WARNING: CPU: 1 PID: 31935 at

Re: Pointers to mirroring partitions (w/ encryption?) help?

04.06.2016 20:31, B. S. пишет: >>> >>> Yeah, when it comes to FDE, you either have to make your peace with >>> trusting the manufacturer, or you can't. If you are going to boot >>> your system with a traditional boot loader, an unencrypted partition >>> is mandatory. >> >> No, it is not with grub2

Re: btrfs ENOSPC "not the usual problem"

On 06/03/2016 05:42 PM, Liu Bo wrote: On Thu, Jun 02, 2016 at 07:45:49PM +, Omari Stephens wrote: [Note: not on list; please reply-all] I've read everything I can find about running out of space on btrfs, and it hasn't helped. I'm currently dead in the water. Everything I do seems to

Re: Pointers to mirroring partitions (w/ encryption?) help?

On 06/04/2016 03:46 AM, Andrei Borzenkov wrote: 04.06.2016 04:39, Justin Brown пишет: Here's some thoughts: Assume a CD sized (680MB) /boot Some distros carry patches for grub that allow booting from Btrfs, so no separate /boot file system is required. (Fedora does not; Ubuntu -- and

Re: Pointers to mirroring partitions (w/ encryption?) help?

On Fri, Jun 3, 2016 at 7:39 PM, Justin Brown wrote: > Here's some thoughts: > >> Assume a CD sized (680MB) /boot > > Some distros carry patches for grub that allow booting from Btrfs Upstream GRUB has had Btrfs support for a long time. There's been no need for distros

Re: Pointers to mirroring partitions (w/ encryption?) help?

04.06.2016 22:05, Chris Murphy пишет: ... >> >> Yeah, when it comes to FDE, you either have to make your peace with >> trusting the manufacturer, or you can't. If you are going to boot your >> system with a traditional boot loader, an unencrypted partition is >> mandatory. > > /boot can be

Re: btrfs

On Sat, 2016-06-04 at 11:00 -0600, Chris Murphy wrote: > SNIA's DDF 2.0 spec Rev 19 > page 18/19 shows 'RAID-1 Simple Mirroring" vs "RAID-1 Multi- > Mirroring" And DDF came how many years after the original RAID paper and everyone understood RAID1 as it was defined there? 1987 vs. ~2003 or so?

Re: btrfs

04.06.2016 20:00, Chris Murphy пишет: > On Sat, Jun 4, 2016 at 1:24 AM, Andrei Borzenkov wrote: >> 04.06.2016 04:51, Christoph Anton Mitterer пишет: >> ... >>> The only extant systems that support higher levels of replication and call it RAID-1 are entirely based on

Re: RAID1 vs RAID10 and best way to set up 6 disks

On Sun, 2016-06-05 at 02:41 +0200, Brendan Hide wrote: > The "questionable reason" is simply the fact that it is, now as well > as  > at the time the features were added, the closest existing > terminology  > that best describes what it does. Even now, it would be difficult on > the  > spot

Re: btrfs

On Sat, Jun 4, 2016 at 11:37 AM, Christoph Anton Mitterer wrote: > On Sat, 2016-06-04 at 11:00 -0600, Chris Murphy wrote: >> SNIA's DDF 2.0 spec Rev 19 >> page 18/19 shows 'RAID-1 Simple Mirroring" vs "RAID-1 Multi- >> Mirroring" > > And DDF came how many years after the

Re: "No space left on device" and balance doesn't work

02.06.2016 15:56, Austin S. Hemmelgarn пишет: > > In your particular situation, what's happened is that you have all the > space allocated to chunks, but have free space within those chunks. > Balance never puts data in existing chunks, and you can't allocate any > new chunks, so you can't run a

Re: btrfs ENOSPC "not the usual problem"

On 06/03/2016 05:42 PM, Liu Bo wrote: On Thu, Jun 02, 2016 at 07:45:49PM +, Omari Stephens wrote: [Note: not on list; please reply-all] I've read everything I can find about running out of space on btrfs, and it hasn't helped. I'm currently dead in the water. Everything I do seems to

Re: "No space left on device" and balance doesn't work

On Sat, Jun 04, 2016 at 09:27:13AM +0300, Andrei Borzenkov wrote: > 02.06.2016 15:56, Austin S. Hemmelgarn пишет: > > > > In your particular situation, what's happened is that you have all the > > space allocated to chunks, but have free space within those chunks. > > Balance never puts data in

Re: [PATCH v10 09/21] btrfs: dedupe: Inband in-memory only de-duplication implement

On 06/03/2016 10:43 PM, Josef Bacik wrote: On 04/01/2016 02:35 AM, Qu Wenruo wrote: Core implement for inband de-duplication. It reuse the async_cow_start() facility to do the calculate dedupe hash. And use dedupe hash to do inband de-duplication at extent level. The work flow is as below:

Re: [PATCH v10 09/21] btrfs: dedupe: Inband in-memory only de-duplication implement

On 06/03/2016 10:27 PM, Josef Bacik wrote: On 06/01/2016 09:12 PM, Qu Wenruo wrote: At 06/02/2016 06:08 AM, Mark Fasheh wrote: On Fri, Apr 01, 2016 at 02:35:00PM +0800, Qu Wenruo wrote: Core implement for inband de-duplication. It reuse the async_cow_start() facility to do the calculate

Re: [PATCH v10 00/21] Btrfs dedupe framework

On 06/03/2016 11:20 PM, Josef Bacik wrote: On 04/01/2016 02:34 AM, Qu Wenruo wrote: This patchset can be fetched from github: https://github.com/adam900710/linux.git wang_dedupe_20160401 In this patchset, we're proud to bring a completely new storage backend: Khala backend. With Khala

Re: btrfs

04.06.2016 04:51, Christoph Anton Mitterer пишет: ... > >> The only extant systems that support higher >> levels of replication and call it RAID-1 are entirely based on MD >> RAID >> and it's poor choice of naming. > > Not true either, show me any single hardware RAID controller that does >

Re: Pointers to mirroring partitions (w/ encryption?) help?

04.06.2016 04:39, Justin Brown пишет: > Here's some thoughts: > >> Assume a CD sized (680MB) /boot > > Some distros carry patches for grub that allow booting from Btrfs, > so no separate /boot file system is required. (Fedora does not; > Ubuntu -- and therefore probably all Debians -- does.) >

Re: btrfs

On Sat, Jun 4, 2016 at 1:24 AM, Andrei Borzenkov wrote: > 04.06.2016 04:51, Christoph Anton Mitterer пишет: > ... >> >>> The only extant systems that support higher >>> levels of replication and call it RAID-1 are entirely based on MD >>> RAID >>> and it's poor choice of