Hi,
I think that the disk allocation size of each file becomes a monotone increase
when the file is made.
But, it sometimes return to 0. Is it correct?
The result of the test at 2.6.37-rc4 is shown below.
(see inode no. 291)
# df -T /test14
FilesystemType 1K-blocks Used
The other filesystems such as ext3 do not have this problem since they are
using generic_file_buffered_write(). And this problem is fixed back in 2007 for
generic_file_buffered_write():
http://lkml.org/lkml/2007/2/4/26
I am very new to btrfs. I am wondering why btrfs has it's own write routine?
Sorry, the format of the patch is not correct. I will submit again.
-Original Message-
From: linux-btrfs-ow...@vger.kernel.org
[mailto:linux-btrfs-ow...@vger.kernel.org] On Behalf Of Zhong, Xin
Sent: Tuesday, December 07, 2010 4:46 PM
To: linux-btrfs@vger.kernel.org
Subject: RE: [PATCH]
Tsutomu Itoh wrote:
Hi,
I think that the disk allocation size of each file becomes a monotone increase
when the file is made.
But, it sometimes return to 0. Is it correct?
The # of blocks is:
stat-blocks = (inode_get_bytes(inode) +
This problem is found in meego testing:
http://bugs.meego.com/show_bug.cgi?id=6672
A file in btrfs is mmaped and the mmaped buffer is passed to pwrite to write to
the same page
of the same file. In btrfs_file_aio_write(), the pages is locked by
prepare_pages(). So when
btrfs_copy_from_user() is
The previous patch is not ok
(http://www.spinics.net/lists/linux-btrfs/msg07447.html). Please ignore it.
Thanks!
-Original Message-
From: Zhong, Xin
Sent: Tuesday, December 07, 2010 5:25 PM
To: linux-btrfs@vger.kernel.org
Cc: Zhong, Xin
Subject: [PATCH] Btrfs: pwrite blocked when
The other filesystems such as ext3 do not have this problem since they are
using generic_file_buffered_write(). And this problem is fixed back in 2007 for
generic_file_buffered_write():
http://lkml.org/lkml/2007/2/4/26
I am very new to btrfs. I am wondering why btrfs has it's own write routine?
[I think the mail was sent to just me due to a reply-accident, I've
re-added the mailing list for this reply]
On Tue, Dec 7, 2010 at 3:50 PM, David Pottage da...@electric-spoon.com wrote:
On 06/12/10 12:41, Nirbheek Chauhan wrote:
I'd like to know if there has been any discussion about adding
... regarding an unused function when !MIGRATION, and regarding a
printk() format string vs argument mismatch.
Signed-off-by: Jan Beulich jbeul...@novell.com
---
fs/btrfs/disk-io.c |6 ++
fs/btrfs/inode.c |6 +++---
2 files changed, 5 insertions(+), 7 deletions(-)
---
=== What do subvolumes look like? ===
All the user sees are directories. They act like any other directory acts,
with
a few exceptions
1) You cannot hardlink between subvolumes. This is because subvolumes have
their own inode numbers and such, think of them as seperate mounts in this
On Sat, Dec 04, 2010 at 09:27:56AM +1100, Dave Chinner wrote:
A property of NFS fileshandles is that they must be stable across
server reboots. Is this anon dev_t used as part of the NFS
filehandle and if so how can you guarantee that it is stable?
It's just as stable as a real dev_t in the
On Fri, Dec 03, 2010 at 05:45:26PM -0500, J. Bruce Fields wrote:
We're using statfs64.fs_fsid for this; I believe that's both stable
across reboots and distinguishes between subvolumes, so that's OK.
It's a field that doesn't have any useful specification and basically
contains random garbage
Care to write a xfstests test for this behaviour?
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On Tue, 2010-12-07 at 17:51 +0100, Christoph Hellwig wrote:
On Sat, Dec 04, 2010 at 09:27:56AM +1100, Dave Chinner wrote:
A property of NFS fileshandles is that they must be stable across
server reboots. Is this anon dev_t used as part of the NFS
filehandle and if so how can you guarantee
Hallo, Hugo,
Du meintest am 06.12.10:
Kernel 2.6.37-rc4:
# btrfs filesystem df /srv/MM
Data, RAID0: total=2.39TB, used=2.37TB
System, RAID1: total=8.00MB, used=188.00KB
System: total=4.00MB, used=0.00
Metadata, RAID1: total=4.25GB, used=3.51GB
Metadata, DUP: total=1.00GB, used=2.33MB
Helmut -
On Tue, Dec 07, 2010 at 06:05:00PM +0100, Helmut Hullen wrote:
Du meintest am 06.12.10:
Kernel 2.6.37-rc4:
# btrfs filesystem df /srv/MM
Data, RAID0: total=2.39TB, used=2.37TB
System, RAID1: total=8.00MB, used=188.00KB
System: total=4.00MB, used=0.00
Metadata, RAID1:
I finally found some time to test this out. With 2.6.37-rc4 (openSUSE
KOTD kernel) I easily encounter the issue.
Using a virtual machine, I created a stock, minimal openSUSE 11.3 x86_64
install, installed all updates, installed postgresql and the 'KOTD'
(Kernel of the Day)
kernel, and ran the
On Tue, Dec 07 2010 at 1:10pm -0500,
Jon Nelson jnel...@jamponi.net wrote:
I finally found some time to test this out. With 2.6.37-rc4 (openSUSE
KOTD kernel) I easily encounter the issue.
Using a virtual machine, I created a stock, minimal openSUSE 11.3 x86_64
install, installed all
On Tue, Dec 7, 2010 at 12:22 PM, Mike Snitzer snit...@redhat.com wrote:
On Tue, Dec 07 2010 at 1:10pm -0500,
Jon Nelson jnel...@jamponi.net wrote:
I finally found some time to test this out. With 2.6.37-rc4 (openSUSE
KOTD kernel) I easily encounter the issue.
Using a virtual machine, I
Excerpts from Tsutomu Itoh's message of 2010-12-07 02:59:52 -0500:
Hi,
I think that the disk allocation size of each file becomes a monotone increase
when the file is made.
But, it sometimes return to 0. Is it correct?
Well, there's a window during the processing of delayed allocation
Excerpts from Jon Nelson's message of 2010-12-07 13:45:14 -0500:
On Tue, Dec 7, 2010 at 12:22 PM, Mike Snitzer snit...@redhat.com wrote:
On Tue, Dec 07 2010 at 1:10pm -0500,
Jon Nelson jnel...@jamponi.net wrote:
I finally found some time to test this out. With 2.6.37-rc4 (openSUSE
KOTD
On Tue, Dec 7, 2010 at 10:44 AM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Tsutomu Itoh's message of 2010-12-07 02:59:52 -0500:
Hi,
I think that the disk allocation size of each file becomes a monotone
increase
when the file is made.
But, it sometimes return to 0. Is it
Excerpts from Mike Fedyk's message of 2010-12-07 14:16:55 -0500:
On Tue, Dec 7, 2010 at 10:44 AM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Tsutomu Itoh's message of 2010-12-07 02:59:52 -0500:
Hi,
I think that the disk allocation size of each file becomes a monotone
On Tue, Dec 7, 2010 at 12:52 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 13:45:14 -0500:
On Tue, Dec 7, 2010 at 12:22 PM, Mike Snitzer snit...@redhat.com wrote:
On Tue, Dec 07 2010 at 1:10pm -0500,
Jon Nelson jnel...@jamponi.net wrote:
On Tue, Dec 07, 2010 at 01:22:43PM -0500, Mike Snitzer wrote:
1. create a database (from bash):
createdb test
2. place the following contents in a file (I used 't.sql'):
begin;
create temporary table foo as select x as a, ARRAY[x] as b FROM
generate_series(1, 1000 ) AS x;
Excerpts from Jon Nelson's message of 2010-12-07 14:34:40 -0500:
On Tue, Dec 7, 2010 at 12:52 PM, Chris Mason chris.ma...@oracle.com wrote:
postgresql errors. Typically, header corruption but from the limited
visibility I've had into this via strace, what I see is zeroed pages
where there
On Tue, Dec 7, 2010 at 11:29 AM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Mike Fedyk's message of 2010-12-07 14:16:55 -0500:
On Tue, Dec 7, 2010 at 10:44 AM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Tsutomu Itoh's message of 2010-12-07 02:59:52 -0500:
Hi,
I
Excerpts from Mike Fedyk's message of 2010-12-07 15:07:08 -0500:
On Tue, Dec 7, 2010 at 11:29 AM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Mike Fedyk's message of 2010-12-07 14:16:55 -0500:
On Tue, Dec 7, 2010 at 10:44 AM, Chris Mason chris.ma...@oracle.com
wrote:
On Tue, Dec 7, 2010 at 2:02 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 14:34:40 -0500:
On Tue, Dec 7, 2010 at 12:52 PM, Chris Mason chris.ma...@oracle.com wrote:
postgresql errors. Typically, header corruption but from the limited
Excerpts from Jon Nelson's message of 2010-12-07 15:25:47 -0500:
On Tue, Dec 7, 2010 at 2:02 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 14:34:40 -0500:
On Tue, Dec 7, 2010 at 12:52 PM, Chris Mason chris.ma...@oracle.com
wrote:
On Tue, Dec 7, 2010 at 2:33 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 15:25:47 -0500:
On Tue, Dec 7, 2010 at 2:02 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 14:34:40 -0500:
On Tue, Dec 7,
Excerpts from Jon Nelson's message of 2010-12-07 15:25:47 -0500:
On Tue, Dec 7, 2010 at 2:02 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 14:34:40 -0500:
On Tue, Dec 7, 2010 at 12:52 PM, Chris Mason chris.ma...@oracle.com
wrote:
On Tue, Dec 07, 2010 at 05:52:13PM +0100, hch wrote:
On Fri, Dec 03, 2010 at 05:45:26PM -0500, J. Bruce Fields wrote:
We're using statfs64.fs_fsid for this; I believe that's both stable
across reboots and distinguishes between subvolumes, so that's OK.
It's a field that doesn't have any
On Tue, Dec 7, 2010 at 2:41 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 15:25:47 -0500:
On Tue, Dec 7, 2010 at 2:02 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 14:34:40 -0500:
On Tue, Dec 7,
On Tue, Dec 7, 2010 at 1:35 PM, Ted Ts'o ty...@mit.edu wrote:
On Tue, Dec 07, 2010 at 01:22:43PM -0500, Mike Snitzer wrote:
1. create a database (from bash):
createdb test
2. place the following contents in a file (I used 't.sql'):
begin;
create temporary table foo as select x as
Excerpts from Jon Nelson's message of 2010-12-07 15:48:58 -0500:
On Tue, Dec 7, 2010 at 2:41 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 15:25:47 -0500:
On Tue, Dec 7, 2010 at 2:02 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts
On Tue, Dec 7, 2010 at 12:15 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Mike Fedyk's message of 2010-12-07 15:07:08 -0500:
On Tue, Dec 7, 2010 at 11:29 AM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Mike Fedyk's message of 2010-12-07 14:16:55 -0500:
On Tue, Dec
(2010/12/08 5:15), Chris Mason wrote:
Excerpts from Mike Fedyk's message of 2010-12-07 15:07:08 -0500:
On Tue, Dec 7, 2010 at 11:29 AM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Mike Fedyk's message of 2010-12-07 14:16:55 -0500:
On Tue, Dec 7, 2010 at 10:44 AM, Chris Mason
On Tue, Dec 7, 2010 at 3:02 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 15:48:58 -0500:
On Tue, Dec 7, 2010 at 2:41 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 15:25:47 -0500:
On Tue, Dec 7,
On Tue, Dec 7, 2010 at 1:35 PM, Ted Ts'o ty...@mit.edu wrote:
On Tue, Dec 07, 2010 at 01:22:43PM -0500, Mike Snitzer wrote:
1. create a database (from bash):
createdb test
2. place the following contents in a file (I used 't.sql'):
begin;
create temporary table foo as select x as
On Tue, Dec 7, 2010 at 2:41 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 15:25:47 -0500:
On Tue, Dec 7, 2010 at 2:02 PM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Jon Nelson's message of 2010-12-07 14:34:40 -0500:
On Tue, Dec 7,
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