2012/2/24 Nik Markovic nmarkovi.nav...@gmail.com:
To add... I also tried nodatasum (only) and nodatacow otions. I found
somewhere that nodatacow doesn't really mean tthat COW is disabled.
Test data is still the same - CPU spikes and times are the same.
On Fri, Feb 24, 2012 at 2:38 PM, Nik
On Mon, Feb 27, 2012 at 07:44:00AM +0100, Helmut Hullen wrote:
Hallo, Hugo,
Du meintest am 26.02.12:
mkfs.btrfs creates a new filesystem. The -L option sets the label
for the newly-created FS. It *cannot* be used to change the label of
an existing FS.
The safest way may be
On Mon, Feb 27, 2012 at 08:52:00AM +0100, Helmut Hullen wrote:
Hallo, linux-btrfs,
I want to change some TByte disks (at least one) from ext4 to btrfs. And
I want -d raid0 -m raid1. Is it possible to tell btrfs-convert
especially these options for data and metadata?
Or have I to use
Hallo, Hugo,
Du meintest am 27.02.12:
I want to change some TByte disks (at least one) from ext4 to btrfs.
And I want -d raid0 -m raid1. Is it possible to tell btrfs-convert
especially these options for data and metadata?
Or have I to use mkfs.btrfs (and then copy the backup) when I want
Hallo, Hugo,
Du meintest am 27.02.12:
mkfs.btrfs creates a new filesystem. The -L option sets the
label
for the newly-created FS. It *cannot* be used to change the label
of an existing FS.
The safest way may be deleting this option ... it seems to work as
expected only when I create
On Sun, Feb 26, 2012 at 04:44:00PM +, Hugo Mills wrote:
OK, the real problem you're seeing is that when btrfs removes a
device from the filesystem, that device is not modified in any way.
This means that the old superblock is left behind on it, containing
the FS label information. What
Hallo, David,
Du meintest am 27.02.12:
[deleting btrfs partition]
OK, the real problem you're seeing is that when btrfs removes a
device from the filesystem, that device is not modified in any way.
This means that the old superblock is left behind on it, containing
the FS label
Am Tue, 17 Jan 2012 17:51:59 +0800
schrieb Liu Bo liubo2...@cn.fujitsu.com:
I've kept hitting enospc warnings of global_rsv while running
defragment on files:
btrfs: block rsv returned -28
WARNING: at fs/btrfs/extent-tree.c:5984
btrfs_alloc_free_block+0x333/0x340 [btrfs]() ...
I used a
Hello,
Since several people asked to post the results, here they are.
I tried raw virtio disk with and without -z -C set and also qcow2 virtio
disk without -z -C set and did not notice any difference in performance
at all - Redhat 6.2 Minimal installs in 10 minutes in each case. The
abysmal
On Sun, Feb 26, 2012 at 11:42:58PM -0500, Jérôme Carretero wrote:
At some point, I would appreciate some kind of thorough evaluation using a
fuzzer on small disk images.
The btrfs developers could for instance:
- provide a script to create a filesystem image with a known layout (known
On Sat, Feb 25, 2012 at 09:14:01AM +1030, Jordan Windsor wrote:
I'm running Ubuntu under KVM, with btrfs on the host where the
Qemu/KVM image is stored, the VM was also running at the time. I was
going to check something unrelated in the dmesg output, as I did that
I noticed some errors in it
Helmut Hullen posted on Mon, 27 Feb 2012 11:27:00 +0100 as excerpted:
Du meintest am 27.02.12:
mkfs.btrfs creates a new filesystem. The -L option sets the label
for the newly-created FS.
The safest way may be deleting this option ... it seems to work as
expected only when I create a
I've just seen this too on Fedora 16 while I was investigating an NFS issue.
I was trying to copy a file from an NFS mount to a btrfs partition.
The NFS transfers for large files were occurring in bursts for some
reason and I was aborting the copy at times. This NFS problem was not
related to
Hallo, Duncan,
Du meintest am 27.02.12:
I've said this several times: Your expectations are wrong. You
don't label partitions.
Yes - now I know.
But I'm afraid other people also expect wrong - when I use
mkfs.ext[234] then this option works (in another way than with
mkfs.btrfs).
Some helpers were broken out of btrfs_direct_IO() in order to avoid code
duplication in new bio_vec-based function.
Signed-off-by: Dave Kleikamp dave.kleik...@oracle.com
Cc: Zach Brown z...@zabbo.net
Cc: Chris Mason chris.ma...@oracle.com
Cc: linux-btrfs@vger.kernel.org
---
fs/btrfs/file.c |
On Mon, Feb 27, 2012 at 10:15:00PM +0100, Helmut Hullen wrote:
Du meintest am 27.02.12:
I've said this several times: Your expectations are wrong. You
don't label partitions.
Yes - now I know.
But I'm afraid other people also expect wrong - when I use
mkfs.ext[234] then this
Hi Helmut,
are you sure that 'mkfs.ext2/3/4 -L label /dev/xxx' doesn't create a
new fs?
Afaik to change a label of a given (ext2/3/4) filesystem you should use
tune2fs.
I don't have a linux system available right now but this is what I would
expect and what would make a lot more sense
On Mon, Feb 27, 2012 at 10:15:00PM +0100, Helmut Hullen wrote:
Du meintest am 27.02.12:
I've said this several times: Your expectations are wrong. You
don't label partitions.
Yes - now I know.
But I'm afraid other people also expect wrong - when I use
mkfs.ext[234] then this
Hallo, Hugo,
Du meintest am 27.02.12:
But there's a small difference:
mke2fs -L MyLabel /dev/sdn4
only sets/changes the label (ok - it tests the type of the partition
and refuses labeling if the type doesn't fit).
OK, I have just tried this out. It does set the filesystem
On Mon, Feb 27, 2012 at 7:54 AM, dima dole...@parallels.com wrote:
Hello,
Since several people asked to post the results, here they are.
I tried raw virtio disk with and without -z -C set and also qcow2 virtio
disk without -z -C set and did not notice any difference in performance at
all -
On Mon, Feb 27, 2012 at 10:18:55PM +, Alex wrote:
I've come across the 'gotcha' in XFS where the inode size defaults to 256 [1]
whereas for SELinux the attributes play better when you initialise it at
creation to 512.
A btrfs inode structure is 136 bytes in size. xattrs and any inline
On Mon, Feb 27, 2012 at 10:18:55PM +, Alex wrote:
From my reading of the btrfs specs [2] it doesn't look like you'll get caught
with that as the inodes will not contain embedded file data or extended
attribute data. These things are stored in other item types.
Have I read that right? I've
On 02/28/2012 07:10 AM, Chester wrote:
On Mon, Feb 27, 2012 at 7:54 AM, dimadole...@parallels.com wrote:
Hello,
Since several people asked to post the results, here they are.
I tried raw virtio disk with and without -z -C set and also qcow2 virtio
disk without -z -C set and did not notice any
On 02/27/2012 09:29 PM, Johannes Hirte wrote:
Am Tue, 17 Jan 2012 17:51:59 +0800
schrieb Liu Bo liubo2...@cn.fujitsu.com:
I've kept hitting enospc warnings of global_rsv while running
defragment on files:
btrfs: block rsv returned -28
WARNING: at fs/btrfs/extent-tree.c:5984
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