Re: Poll: time to switch skinny-metadata on by default?

2014-10-27 Thread Duncan
Zygo Blaxell posted on Mon, 27 Oct 2014 00:39:25 -0400 as excerpted: One thing that may be significant is _when_ those 3 hanging filesystems are hanging: when using rsync to update local files. These machines are using the traditional rsync copy-then-rename method rather than --inplace

Re: Poll: time to switch skinny-metadata on by default?

2014-10-27 Thread Duncan
Marc Joliet posted on Mon, 27 Oct 2014 02:24:15 +0100 as excerpted: Am Sat, 25 Oct 2014 14:35:33 -0600 schrieb Chris Murphy li...@colorremedies.com: On Oct 25, 2014, at 2:33 PM, Chris Murphy li...@colorremedies.com wrote: On Oct 25, 2014, at 6:24 AM, Marc Joliet mar...@gmx.de wrote:

Re: Poll: time to switch skinny-metadata on by default?

2014-10-26 Thread Marc Joliet
Am Sat, 25 Oct 2014 14:35:33 -0600 schrieb Chris Murphy li...@colorremedies.com: On Oct 25, 2014, at 2:33 PM, Chris Murphy li...@colorremedies.com wrote: On Oct 25, 2014, at 6:24 AM, Marc Joliet mar...@gmx.de wrote: First of all: does grub2 support booting from a btrfs file system

Re: Poll: time to switch skinny-metadata on by default?

2014-10-26 Thread Marc Joliet
Am Sat, 25 Oct 2014 21:58:08 +0200 schrieb Marc Joliet mar...@gmx.de: Am Sat, 25 Oct 2014 14:24:58 +0200 schrieb Marc Joliet mar...@gmx.de: I can still access files on MARCEC_BACKUP just fine, and the snapshots are still there (btrfs subvolume list succeeds). Just an update: that was

Re: Poll: time to switch skinny-metadata on by default?

2014-10-26 Thread Zygo Blaxell
On Mon, Oct 20, 2014 at 06:34:03PM +0200, David Sterba wrote: On Thu, Oct 16, 2014 at 01:33:37PM +0200, David Sterba wrote: I'd like to make it default with the 3.17 release of btrfs-progs. Please let me know if you have objections. For the record, 3.17 will not change the defaults. The

Re: Poll: time to switch skinny-metadata on by default?

2014-10-25 Thread Marc Joliet
Am Mon, 20 Oct 2014 18:34:03 +0200 schrieb David Sterba dste...@suse.cz: On Thu, Oct 16, 2014 at 01:33:37PM +0200, David Sterba wrote: I'd like to make it default with the 3.17 release of btrfs-progs. Please let me know if you have objections. For the record, 3.17 will not change the

Re: Poll: time to switch skinny-metadata on by default?

2014-10-25 Thread Marc Joliet
Am Sat, 25 Oct 2014 14:24:58 +0200 schrieb Marc Joliet mar...@gmx.de: I can still access files on MARCEC_BACKUP just fine, and the snapshots are still there (btrfs subvolume list succeeds). Just an update: that was true for a while, but at one point listing directories and accessing the file

Re: Poll: time to switch skinny-metadata on by default?

2014-10-23 Thread David Sterba
On Thu, Oct 23, 2014 at 02:41:47AM +, Duncan wrote: Dave posted on Wed, 22 Oct 2014 08:49:46 -0400 as excerpted: On Tue, Oct 21, 2014 at 10:08 PM, Duncan 1i5t5.dun...@cox.net wrote: As for the mounted filesystem question, since all it does is flip a switch so that new metadata writes

Re: Poll: time to switch skinny-metadata on by default?

2014-10-23 Thread Tobias Geerinckx-Rice
On 22 October 2014 04:08, Duncan 1i5t5.dun...@cox.net wrote: Since the kernel has code for both fat metadata and skinny-metadata, they can exist side-by-side and the kernel will use whichever code is appropriate. I understand that the fat extent code will probably never be removed for

Re: Poll: time to switch skinny-metadata on by default?

2014-10-23 Thread Duncan
Tobias Geerinckx-Rice posted on Thu, 23 Oct 2014 16:47:19 +0200 as excerpted: On 22 October 2014 04:08, Duncan 1i5t5.dun...@cox.net wrote: Since the kernel has code for both fat metadata and skinny-metadata, they can exist side-by-side and the kernel will use whichever code is appropriate.

Re: Poll: time to switch skinny-metadata on by default?

2014-10-22 Thread Dave
On Tue, Oct 21, 2014 at 10:08 PM, Duncan 1i5t5.dun...@cox.net wrote: As for the mounted filesystem question, since all it does is flip a switch so that new metadata writes use the skinny-metadata code path, it shouldn't be a problem. Nope. Just tried it here: # btrfs --version Btrfs

Re: Poll: time to switch skinny-metadata on by default?

2014-10-22 Thread Duncan
Dave posted on Wed, 22 Oct 2014 08:49:46 -0400 as excerpted: On Tue, Oct 21, 2014 at 10:08 PM, Duncan 1i5t5.dun...@cox.net wrote: As for the mounted filesystem question, since all it does is flip a switch so that new metadata writes use the skinny-metadata code path, it shouldn't be a

Re: Poll: time to switch skinny-metadata on by default?

2014-10-21 Thread Duncan
David Sterba posted on Mon, 20 Oct 2014 18:34:03 +0200 as excerpted: On Thu, Oct 16, 2014 at 01:33:37PM +0200, David Sterba wrote: I'd like to make it default with the 3.17 release of btrfs-progs. Please let me know if you have objections. For the record, 3.17 will not change the defaults.

Re: Poll: time to switch skinny-metadata on by default?

2014-10-21 Thread Austin S Hemmelgarn
On 2014-10-21 05:29, Duncan wrote: David Sterba posted on Mon, 20 Oct 2014 18:34:03 +0200 as excerpted: On Thu, Oct 16, 2014 at 01:33:37PM +0200, David Sterba wrote: I'd like to make it default with the 3.17 release of btrfs-progs. Please let me know if you have objections. For the record,

Re: Poll: time to switch skinny-metadata on by default?

2014-10-21 Thread Konstantinos Skarlatos
On 21/10/2014 2:02 μμ, Austin S Hemmelgarn wrote: On 2014-10-21 05:29, Duncan wrote: David Sterba posted on Mon, 20 Oct 2014 18:34:03 +0200 as excerpted: On Thu, Oct 16, 2014 at 01:33:37PM +0200, David Sterba wrote: I'd like to make it default with the 3.17 release of btrfs-progs. Please let

Re: Poll: time to switch skinny-metadata on by default?

2014-10-21 Thread Rich Freeman
On Tue, Oct 21, 2014 at 5:29 AM, Duncan 1i5t5.dun...@cox.net wrote: David Sterba posted on Mon, 20 Oct 2014 18:34:03 +0200 as excerpted: On Thu, Oct 16, 2014 at 01:33:37PM +0200, David Sterba wrote: I'd like to make it default with the 3.17 release of btrfs-progs. Please let me know if you

Re: Poll: time to switch skinny-metadata on by default?

2014-10-21 Thread Duncan
Rich Freeman posted on Tue, 21 Oct 2014 12:40:01 -0400 as excerpted: On Tue, Oct 21, 2014 at 5:29 AM, Duncan 1i5t5.dun...@cox.net wrote: David Sterba posted on Mon, 20 Oct 2014 18:34:03 +0200 as excerpted: On Thu, Oct 16, 2014 at 01:33:37PM +0200, David Sterba wrote: I'd like to make it

Re: Poll: time to switch skinny-metadata on by default?

2014-10-20 Thread David Sterba
On Thu, Oct 16, 2014 at 01:33:37PM +0200, David Sterba wrote: I'd like to make it default with the 3.17 release of btrfs-progs. Please let me know if you have objections. For the record, 3.17 will not change the defaults. The timing of the poll was very bad to get enough feedback before the

Re: Poll: time to switch skinny-metadata on by default?

2014-10-18 Thread Petr Janecek
Hello, so far I haven't succeeded running btrfs balance on a large skinny-metadata fs -- segfault, kernel bug, reproducible. No such problems on ^skinny-metadata fs (same disks, same data). Tried both several times on 3.17. More info in comments 10,14 in

Re: Poll: time to switch skinny-metadata on by default?

2014-10-18 Thread Josef Bacik
On 10/18/2014 07:21 AM, Petr Janecek wrote: Hello, so far I haven't succeeded running btrfs balance on a large skinny-metadata fs -- segfault, kernel bug, reproducible. No such problems on ^skinny-metadata fs (same disks, same data). Tried both several times on 3.17. More info in

Re: Poll: time to switch skinny-metadata on by default?

2014-10-18 Thread Wang Shilong
Hello Josef, With Skinny metadta and i running your btrfs-next repo for-suse branch (which has extent ref patch), i hit following problem: [ 250.679705] BTRFS info (device sdb): relocating block group 35597058048 flags 36

Re: Poll: time to switch skinny-metadata on by default?

2014-10-18 Thread Josef Bacik
Thanks I'll run this on Monday. Josef Wang Shilong wangshilong1...@gmail.com wrote: Hello Josef, With Skinny metadta and i running your btrfs-next repo for-suse branch (which has extent ref patch), i hit following problem: [ 250.679705] BTRFS info (device sdb): relocating block group

Re: Poll: time to switch skinny-metadata on by default?

2014-10-18 Thread Wang Shilong
Sure, that is cool, let me know if i could give any help! I have an idle VM that could run btrfs tests there.^_^ Thanks I'll run this on Monday. Josef Wang Shilong wangshilong1...@gmail.com wrote: Hello Josef, With Skinny metadta and i running your btrfs-next repo for-suse branch

Re: Poll: time to switch skinny-metadata on by default?

2014-10-17 Thread Petr Janecek
Hello, the core of skinny-metadata feature has been merged in 3.10 (Jun 2013) and has been reportedly used by many people. No major bugs were reported lately unless I missed them. so far I haven't succeeded running btrfs balance on a large skinny-metadata fs -- segfault, kernel bug,

Re: Poll: time to switch skinny-metadata on by default?

2014-10-17 Thread Josef Bacik
On 10/17/2014 08:30 AM, Petr Janecek wrote: Hello, the core of skinny-metadata feature has been merged in 3.10 (Jun 2013) and has been reportedly used by many people. No major bugs were reported lately unless I missed them. so far I haven't succeeded running btrfs balance on a large

Poll: time to switch skinny-metadata on by default?

2014-10-16 Thread David Sterba
Hi, the core of skinny-metadata feature has been merged in 3.10 (Jun 2013) and has been reportedly used by many people. No major bugs were reported lately unless I missed them. The obvious benefit is reduced metadata consumption at the cost of lost backward compatibility for pre-3.10 kernels. I