Hello,
I've stumbled upon this article:
http://storagemojo.com/2011/06/27/de-dup-too-much-of-good-thing/
Reportedly Sandforce SF1200 SSD controller does internally block-level
data de-duplication. This effectively removes the additional
protection given by writing multiple metadata copies. This
2011-07-09 08:09:55 +0100, Stephane Chazelas:
2011-07-08 16:12:28 -0400, Chris Mason:
[...]
I'm running a dstat -df at the same time and I'm seeing
substantive amount of disk writes on the disks that hold the
source FS (and I'm rsyncing from read-only snapshot subvolumes
in case
On Sat, Jul 09, 2011 at 01:40:19AM +0200, krz...@gmail.com wrote:
btrfs balance takes very long time on large filesystems. Possibility
of running balance on only one subvolume
That doesn't make a great deal of sense in terms of the on-disk
data structures.
or running balance to reclaim
On Fri, Jul 08, 2011 at 09:45:05PM -0700, Evert Vorster wrote:
A year ago a btrfs raid needs to be scanned before it can be mounted.
Is this still the case?
I would like to have a btrfs raid as root, but so far this was not
possible due to the scanning thing, and thus I still need a /boot
Jeremy Sanders wrote:
Hi - I'm trying btrfs with kernel 2.6.38.8-32.fc15.x86_64 (a Fedora
kernel). I'm just doing a tar-to-tar copy onto the file system with
compress- force=zlib. Here are some traces of the stuck processes.
Does anyone have any idea what caused this? Is it fixed in a recent
Just compiled a custom kernel, but unable to mount a btrfs partition. It
essentially says 'unrecognized filesystem'. What could be missing?
# File systems
#
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
# CONFIG_EXT2_FS_XIP is not set
2011-07-08 12:17:54 -0400, Chris Mason:
[...]
How easily can you recompile your kernel with more debugging flags?
That should help narrow it down. I'm looking for CONFIG_SLAB_DEBUG (or
slub) and CONFIG_DEBUG_PAGEALLOC
[...]
I tried that (with CONFIG_DEBUG_SLAB_LEAK as well) but no
difference
On Saturday 9 July, 2011 10:12:43 you wrote:
If your btrfs lives on two or more devices you will have to run 'btrfs
device scan' prior to mount or give all devices as arguments to mount.btrfs.
Ohhh, I'd added a disk drive without modifying fstab. Thanks.
Where would you put a device scan to
Hallo, Cacook,
Du meintest am 09.07.11:
Just compiled a custom kernel, but unable to mount a btrfs partition.
It essentially says 'unrecognized filesystem'. What could be
missing?
Perhaps you only need a newer kernel. Sounds funny, but some days ago I
had a similar problem, with kernel
On Sat, Jul 09, 2011 at 10:28:03AM -0700, cac...@quantum-sci.com wrote:
On Saturday 9 July, 2011 10:12:43 you wrote:
If your btrfs lives on two or more devices you will have to run 'btrfs
device scan' prior to mount or give all devices as arguments to mount.btrfs.
Ohhh, I'd added a disk
On Sat, Jul 9, 2011 at 11:09 AM, Stephane Chazelas
stephane_chaze...@yahoo.fr wrote:
2011-07-08 11:06:08 -0400, Chris Mason:
[...]
I would do two things. First, I'd turn off compress_force. There's no
explicit reason for this, it just seems like the mostly likely place for
a bug.
[...]
I
2011-07-09 13:25:00 -0600, cwillu:
On Sat, Jul 9, 2011 at 11:09 AM, Stephane Chazelas
stephane_chaze...@yahoo.fr wrote:
2011-07-08 11:06:08 -0400, Chris Mason:
[...]
I would do two things. First, I'd turn off compress_force. There's no
explicit reason for this, it just seems like the
2011-07-09 08:09:55 +0100, Stephane Chazelas:
2011-07-08 16:12:28 -0400, Chris Mason:
[...]
I'm running a dstat -df at the same time and I'm seeing
substantive amount of disk writes on the disks that hold the
source FS (and I'm rsyncing from read-only snapshot subvolumes
in case
13 matches
Mail list logo
