Thank you for the extremely detailed and helpful reply. I now
understand what was happening. To me, when I read total= I guess I
thought that was capacity rather than allocated (but now holey)
chunks. I agree that perhaps adjusting the phrasing of the output of
df and show would be helpful in
On Fri, Apr 11, 2014 at 10:43:53AM +0800, Qu Wenruo wrote:
Add more explain on btrfs-zero-log about when to use it.
Cc: Marc MERLIN m...@merlins.org
Signed-off-by: Qu Wenruo quwen...@cn.fujitsu.com
Reviewed-by: Marc MERLIN m...@merlins.org
Looks good, thank you.
Marc
---
Original Message
Subject: Re: [PATCH 1/2] btrfs-progs: Add device management related
paragraph.
From: Marc MERLIN m...@merlins.org
To: Qu Wenruo quwen...@cn.fujitsu.com
Date: 2014年04月11日 14:10
On Fri, Apr 11, 2014 at 10:43:52AM +0800, Qu Wenruo wrote:
Add device management
On Fri, Apr 11, 2014 at 10:43:52AM +0800, Qu Wenruo wrote:
Add device management related paragraph to better explain btrfs device
management.
Cc: Marc MERLIN m...@merlins.org
Signed-off-by: Qu Wenruo quwen...@cn.fujitsu.com
---
Documentation/btrfs-balance.txt | 3 +++
Hello,
(Still in my quest for BTRFS performance)
It is extremely unclear which BTRFS mount options are filesystem wide and
will apply to each and every mountpoint in the BTRFS filesystem, and which
options can be set per subvolume or per mountpoint.
As far as I can tell, there is no reliable
Hi Liu,
Am Donnerstag, 10. April 2014, 23:55:21 schrieb Liu Bo:
Hi,
Just FYI, these patches are also available on the following site,
kernel:
https://github.com/liubogithub/btrfs-work.git dedup-on-3.14-linux
progs:
https://github.com/liubogithub/btrfs-progs.git dedup
I bet its good
On Thu, Apr 10, 2014 at 11:10:33PM -0700, Chip Turner wrote:
Thank you for the extremely detailed and helpful reply. I now
understand what was happening. To me, when I read total= I guess I
thought that was capacity rather than allocated (but now holey)
chunks. I agree that perhaps
Hi,
I was asked about situations use cases that would cause BTRFS to slow down
to a crawl.
And it's exactly what happened to me yesterday when I was trying, on the
contrary, to speed it up.
So here's the recipe for getting a slow to the point it is unusable BTRFS.
1/ Perform a clean, fresh
On Fri, Apr 11, 2014 at 11:28:48AM +0200, Martin Steigerwald wrote:
Hi Liu,
Am Donnerstag, 10. April 2014, 23:55:21 schrieb Liu Bo:
Hi,
Just FYI, these patches are also available on the following site,
kernel:
https://github.com/liubogithub/btrfs-work.git dedup-on-3.14-linux
fs/btrfs/scrub.c: In function 'get_raid56_logic_offset':
fs/btrfs/scrub.c:2269: warning: comparison of distinct pointer types lacks a
cast
fs/btrfs/scrub.c:2269: warning: right shift count = width of type
fs/btrfs/scrub.c:2269: warning: passing argument 1 of '__div64_32' from
incompatible
Hi, Michael
Btrfs send/receive can transfer incremental snapshots as well - you're
looking for the -p or parent parameter. On the other hand, it might
not be the right tool for the job.
If you're 100% happy with your old disk's *content*/layout/etc (just not
happy with the disk's
Hi all,
Debian testing/Jessie-to-be; except kernels/btrfs-tools are from unstable so
usually couple of weeks later than you/Linus publish.
Linux XX 3.13-1-amd64 #1 SMP Debian 3.13.7-1 (2014-03-25) x86_64
Btrfs-tools v3.12 Debian standard (not particularly messed with looks like)
I've never had
On Tue, 25 Mar 2014 09:41:42 AM Marc MERLIN wrote:
4 hours to stat 700K files. That's bad...
Even 11mn to restat them just to count them looks bad too.
One way to get an idea of where that's happening is to run the command with
strace -c to build up a table of times spent in each system call,
I have a multiboot PC with Centos 6.5, Fedora 20, and Ubuntu 13.10.
Also there is a btrfs partition I want to mount, read and write from the
3 diferent distros.
Is this safe ? Is the btrfs versions from this 3 distros compatible
between them ?
This is for testing and learning only.
Thanks.
On Fri, Apr 11, 2014 at 07:11:52AM -0700, George Mitchell wrote:
Well, Akonadi brought my system to its knees long before I converted to
btrfs, so somehow I am not surprised. I have kept akonadi disabled ever
since.for everything except a portion of Thunderbird and that ONLY with
sql-lite.
Hi Linus,
Please grab my for-linus branch:
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs.git for-linus
The most important changes here are from Josef, fixing a btrfs
regression in 3.14 that can cause corruptions in the extent allocation
tree when snapshots are in use. Josef
On Sat, Apr 12, 2014 at 12:15:14AM +1000, Chris Samuel wrote:
On Tue, 25 Mar 2014 09:41:42 AM Marc MERLIN wrote:
4 hours to stat 700K files. That's bad...
Even 11mn to restat them just to count them looks bad too.
One way to get an idea of where that's happening is to run the command
On Fri, Apr 11, 2014 at 05:16:22PM +0800, Liu Bo wrote:
+DEVICE MANAGEMENT
+-
+Btrfs filesystem is capable to manage multiple devices.
+
+Btrfs filesystem use different profiles to manage different RAID level, and
+use balance to rebuild chunks, also devices can be
On Thu, Apr 10, 2014 at 11:10:48PM -0700, Marc MERLIN wrote:
--- a/Documentation/btrfs-replace.txt
+++ b/Documentation/btrfs-replace.txt
@@ -13,6 +13,9 @@ DESCRIPTION
---
'btrfs replace' is used to replace btrfs managed devices with other device.
I would add a quick line
On Fri, Apr 11, 2014 at 07:36:28PM +0200, David Sterba wrote:
On Thu, Apr 10, 2014 at 11:10:48PM -0700, Marc MERLIN wrote:
--- a/Documentation/btrfs-replace.txt
+++ b/Documentation/btrfs-replace.txt
@@ -13,6 +13,9 @@ DESCRIPTION
---
'btrfs replace' is used to replace
On Tue, Apr 08, 2014 at 06:25:43PM +0100, Filipe David Borba Manana wrote:
The following kernel commit changed the definition of the inline function
btrfs_file_extent_inline_len():
commit 514ac8ad8793a097c0c9d89202c642479d6dfa34
Author: Chris Mason c...@fb.com
Date: Fri Jan 3
On Fri, Apr 11, 2014 at 6:49 PM, David Sterba dste...@suse.cz wrote:
On Tue, Apr 08, 2014 at 06:25:43PM +0100, Filipe David Borba Manana wrote:
The following kernel commit changed the definition of the inline function
btrfs_file_extent_inline_len():
commit
Julio E. Gonzalez P. posted on Fri, 11 Apr 2014 10:19:45 -0400 as
excerpted:
I have a multiboot PC with Centos 6.5, Fedora 20, and Ubuntu 13.10. Also
there is a btrfs partition I want to mount, read and write from the 3
diferent distros.
Is this safe ? Is the btrfs versions from this 3
On Fri, Apr 11, 2014 at 06:51:58PM +0100, Filipe David Manana wrote:
Thanks David.
Can you add it please?
I was using an older version of the integration branch.
Yes, fixed. The patch flux in the integration can cause minor issues and
I try to fix them myself if possible, sometimes with a note
Hi Liu,
Thanks for your work.
Each test copy 2gb file from sdf (btrfs) to sde (btrfs with dedup 4k
blocksize).
Before every test i recreate filesystem.
On second write all goods.
Test 1
Nodesize = leafsize = 4k
Write overhead ~ x1.5
Test 2
Nodesize = leafsize = 16k
Write overhead ~ x19
Marc MERLIN posted on Fri, 11 Apr 2014 10:23:46 -0700 as excerpted:
Is anyone else using btrfs on top of dmcrypt and software raid 5?
There may be others, but I haven't seen them active on-list. For active
list users, I think you're leading the pack in that area. =:^/
--
Duncan - List
Alex posted on Fri, 11 Apr 2014 11:23:31 + as excerpted:
I've never had scrub report anything other than 0 (zero) errors. Ever.
Yet I've had more than one ( ;-) ) problem which required btrfs-zero-log
and/or btrfs --repair. This are usually my fault - fixed it 'til it
broke.
root@XX ~
On Fri, 11 Apr 2014 10:23:46 -0700
Marc MERLIN m...@merlins.org wrote:
Is anyone else using btrfs on top of dmcrypt and software raid 5?
I use Btrfs accessed via NBD over a LAN, physically stored on mdadm RAID5, a
setup which is similar to yours in that the block device used for Btrfs has a
Hi Chris,
On Fri, 11 Apr 2014 12:50:26 PM Chris Mason wrote:
The most important changes here are from Josef, fixing a btrfs
regression in 3.14 that can cause corruptions in the extent allocation
tree when snapshots are in use.
Will these regression fixes go to stable too?
cheers,
Chris
--
Swâmi Petaramesh posted on Fri, 11 Apr 2014 11:21:55 +0200 as excerpted:
It is extremely unclear which BTRFS mount options are filesystem wide
and will apply to each and every mountpoint in the BTRFS filesystem, and
which options can be set per subvolume or per mountpoint.
As far as I can
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