2011-03-21 16:24:50 +, Stephane Chazelas:
[...]
I'm trying to move a btrfs FS that's on a hardware raid 5 (6TB
large, 4 of which are in use) to another machine with 3 3TB HDs
and preserve all the subvolumes/snapshots.
[...]
I tried one approach: export a LVM snapshot of the old fs as a
nbd
From: Liu Bo liubo2...@cn.fujitsu.com
Subject: [PATCH 2/2 v3] Btrfs: Per file/directory controls for COW and
compression
Data compression and data cow are controlled across the entire FS by mount
options right now. ioctls are needed to set this on a per file or per
directory basis. This has
Hi Miao,
On Tue, 22 Mar 2011 18:03:24 +0800
Miao Xie mi...@cn.fujitsu.com wrote:
The V5 patch is attached, could you test it for me? I have run Chris stress
test, dbench benchmark
on my machine, it work well. I want to check if the above bug still exists or
not.
Thanks
Miao
Here's the
When doing direct writes we store the checksums in the ordered sum stuff in the
ordered extent for writing them when the write completes, so we don't even use
the dip-csums array. So if we're writing, don't bother allocating dip-csums
since we won't use it anyway. Thanks,
Signed-off-by: Josef
I noticed that dio_end_io calls the appropriate endio function with an error,
but the endio functions don't actually do anything with that error, they assume
that if there was an error then the bio will not be uptodate. So if we had
checksum failures we would never pass back EIO. So if there is
Hi,
sorry for late reply to this. (I will have another look at your git
series.)
David Sterba wrote:
On Fri, Mar 11, 2011 at 03:49:40PM +0100, Arne Jansen wrote:
This is the main scrub code.
Signed-off-by: Arne Jansen sensi...@gmx.net
---
fs/btrfs/Makefile |2 +-
fs/btrfs/ctree.h
btrfs_link returns EPERM if a cross-subvolume link is attempted.
However, in this case I believe EXDEV to be the more appropriate value.
From the link(2) man page:
EXDEV oldpath and newpath are not on the same mounted file system. (Linux
permits a file system to be mounted at multiple
Excerpts from Tejun Heo's message of 2011-03-21 14:11:24 -0400:
Hello,
On Mon, Mar 21, 2011 at 01:24:37PM -0400, Chris Mason wrote:
Very interesting. Ok, I'll definitely rerun my benchmarks as well. I
used dbench extensively during the initial tuning, but you're forcing
the memory low
I can mount it back, but not if I reload the btrfs module, in which case I
get:
[ 1961.328280] Btrfs loaded
[ 1961.328695] device fsid df4e5454eb7b1c23-7a68fc421060b18b devid 1 transid
118 /dev/loop0
[ 1961.329007] btrfs: failed to read the system array on loop0
[ 1961.340084] btrfs:
On Mon, 21 Mar 2011 08:08:17 -0400, Chris Mason wrote:
I also think that code is racing with the code that frees delayed nodes,
but haven't yet triggered my debugging printks to prove either one.
We free delayed nodes when we want to destroy the inode, at that time, just
one task,
which is
Hi Miao,
The possible circular locking dependency message doesn't show up in the updated
V5. However,
I see a new possible irq lock inversion dependency message while running
xfstests.
=
[ INFO: possible irq lock inversion dependency
On wed, 23 Mar 2011 12:24:09 +0900, Itaru Kitayama wrote:
Hi Miao,
The possible circular locking dependency message doesn't show up in the
updated V5. However,
I see a new possible irq lock inversion dependency message while running
xfstests.
I is testing the new version, in which I
On Wed, 23 Mar 2011 12:00:38 +0800
Miao Xie mi...@cn.fujitsu.com wrote:
I is testing the new version, in which I fixed the slab shrinker problem
reported by
Chris. In the new version, the delayed node is removed before the relative
inode is
moved into the unused_inode list(the slab
On Mon, Mar 21, 2011 at 11:24 PM, Stephane Chazelas
stephane.chaze...@gmail.com wrote:
AFAICT, compression is enabled at mount time and would
only apply to newly created files. Is there a way to compress
files already in a btrfs filesystem?
You need to select the files manually (not possible
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