On Mon, Apr 28, 2014 at 2:00 PM, Jonathan Corbet wrote:
> On Wed, 23 Apr 2014 18:18:34 -0700
> Marc MERLIN wrote:
>
>> I writing slides about btrfs for an upcoming talk (at linuxcon) and I was
>> trying to gather a list of companies that contribute code to btrfs.
>
> So I just ran into this now.
-- Forwarded message --
From: Chester
Date: Thu, Oct 17, 2013 at 3:51 PM
Subject: dmesg filled with btrfs messages
To: linux-btrfs
It's what looks like the same message repeated over and over again.
Here's my dmesg: Pasted below is an excerpt. The full netconsole
The last argument should be the directory you want to clone into. Use
'-b ' to specify the branch you want to clone. I'm pretty sure
you've compiled just the master branch of both linux-btrfs and
btrfs-progs.
On Mon, Feb 4, 2013 at 8:59 PM, Gareth Pye wrote:
> I felt like having a small play with
So, I got the sysq-w + the whole dmesg until crash
<6>[0.00] Initializing cgroup subsys cpuset
<6>[0.00] Initializing cgroup subsys cpu
<5>[0.00] Linux version 3.4.0-00091-gcb77fcd (root@navilaptop)
(gcc version 4.6.2 (Gentoo 4.6.2-r1 p1.4, pie-0.5.0) ) #1 SMP Thu Jun
21 18
On Wed, Jun 27, 2012 at 11:45 AM, Josef Bacik wrote:
>
> On Wed, Jun 27, 2012 at 10:32:22AM -0600, Chester wrote:
> > Hey Josef, the btrfsck was dirty. Here it is pasted inline.
> >
> >
>
> Ok, do btrfsck --repair on the device (the device must be unmounted) and
>
Problem still occurs.. With just a bittorrent client (downloading) +
chrome running.
This could also be related but, last night, I triggered a btrfs
balance.. I'm not too sure whether the balance finished or not,
because when I took a look at it this morning, it said "no file or
directory" and tol
On Sat, Jun 16, 2012 at 3:23 PM, Martin Steigerwald wrote:
>
>
> [251818.022631] [ cut here ]
> [251818.022714] WARNING: at
>
> /media/data/mattems/src/linux-2.6-3.4.1/debian/build/source_amd64_none/fs/btrfs/extent_io.c:4522
> read_extent_buffer+0x43/0xf0 [btrfs]()
> [25181
On Mon, Apr 9, 2012 at 10:53 AM, Calvin Walton wrote:
>
> Hi,
>
> I have a system that's using a dracut-generated initramfs to mount a
> btrfs root. After upgrading to kernel 3.4.0-rc2 to test it out, I've
> noticed that the process of mounting the root filesystem takes much
> longer with 3.4.0-rc
On Tue, Mar 27, 2012 at 12:19 PM, Alex wrote:
> Hi all,
>
> Just a quick question but can't find an obvious answer.
>
> Can I create/convert a existing (btrfs) directory into a subvolume?
>
> It would be very helpful when transferring 'partitions' into btrfs.
> I found a similar question way back
There's support for Read-only snapshots, so you might be able to use
that with some clever scripting =\
On Mon, Mar 12, 2012 at 2:36 PM, Fong Vang wrote:
> Does anyone know if there's a plan to provide an option to make a
> BTRFS filesystem a WORM (write-one-read-many)? So essentially, once a
>
On Mon, Feb 27, 2012 at 7:54 AM, dima 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 - Redhat 6.2 Minima
On Mon, Feb 13, 2012 at 1:17 AM, Ralf-Peter Rohbeck wrote:
>
> Hello,
> is it possible to set nodatacow on a per-file basis? I couldn't find anything.
> If not, wouldn't that be a great feature to get around the performance issues
> with VM and database storage? Of course cloning should still cau
On Fri, Feb 10, 2012 at 3:27 PM, Chris Mason wrote:
>
> Ok, its worth pointing out that you're just one bit away from proper
> ordering here. While I'm testing out this code to fix key ordering,
> could you please run memtest86 on your machine?
>
I ran memtest for a good 16 hours and it has pas
On Thu, Feb 9, 2012 at 11:42 AM, Norbert Scheibner wrote:
> Glück Auf!
> I use now kernel 3.2. The filesystem was originally created under 2.6.39 on 1
> whole hdd, mounted with "noatime,nodiratime,inode_cache". I use it for
> backups: rsync the whole system to a subvolume, snapshot it and then d
On Wed, Feb 8, 2012 at 8:46 PM, Chester wrote:
> On Wed, Feb 8, 2012 at 2:26 PM, Chris Mason wrote:
>> On Wed, Feb 08, 2012 at 01:22:19PM -0600, Chester wrote:
>>> On Wed, Feb 8, 2012 at 6:55 AM, Chris Mason wrote:
>>> > On Tue, Feb 07, 2012 at 06:10:15PM -0600,
On Wed, Feb 8, 2012 at 2:26 PM, Chris Mason wrote:
> On Wed, Feb 08, 2012 at 01:22:19PM -0600, Chester wrote:
>> On Wed, Feb 8, 2012 at 6:55 AM, Chris Mason wrote:
>> > On Tue, Feb 07, 2012 at 06:10:15PM -0600, Chester wrote:
>> >> This is dmesg mounted with -o r
On Wed, Feb 8, 2012 at 6:55 AM, Chris Mason wrote:
> On Tue, Feb 07, 2012 at 06:10:15PM -0600, Chester wrote:
>> This is dmesg mounted with -o ro,recovery
>> [ 20.957392] exe used greatest stack depth: 4920 bytes left
>> [ 145.340317] device label BtrfsLinux devid 1 tra
Using stock kernel 3.2.0:
I probably made several mistakes.
1. I'm using zcache which is still staging
2. Tried to suspend to RAM (probably bad with zcache enabled)
3. Using one unified btrfs volume
4. After failing to mount, tried several times to mount with -o recovery
5. Writecache enabled. T
On Fri, Jan 27, 2012 at 9:03 AM, Hadmut Danisch wrote:
> Hi,
>
> just a question:
>
> Mounting options for file systems are usually given on the command line
> or in /etc/fstab.
>
> Both do not work with mobile storage devices like usb hard disks, since
> they are either mounted automatically thro
On Thu, Jan 26, 2012 at 7:11 PM, Wes wrote:
> Just wondering,
>
> Why is this command called 'df' when it reports total space and used
> space but not free space? Wouldn't this be more aptly named 'btrfs
> filesystem du' ?
> It's been my understanding that traditionally 'df' has been to display
On Wed, Jan 25, 2012 at 5:27 PM, Waxhead wrote:
> Hi,
>
> From what I have read BTRFS does replace a bad copy of data with a known
> good copy (if it has one). Will BTRFS try to repair the corrupt data or will
> it simply silently restore the data without the user knowing that a file has
> been "f
On Thu, Dec 15, 2011 at 8:19 PM, Fajar A. Nugraha wrote:
> On Fri, Dec 16, 2011 at 1:49 AM, Tobias wrote:
>> Hi all!
>>
>> My BTRFS-FS ist getting really slow. Reading is ok, writing is slow and
>> deleting is horrible slow.
>>
>> There are many files and many links on the FS.
>>
>> # btrfs files
Just yesterday I can reproduce this reliably. There was no way to turn
the system off other than to use the 'ol REISUB sysrq tricks. I
decided to give it a try today, and it works somehow..
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On Tue, Oct 11, 2011 at 9:37 PM, Li Zefan wrote:
>
>
> This confirmed my speculation. I've fixed this bug a month ago, but
> the patch hasn't hitted mainline.
>
> You can try it out:
>
> http://marc.info/?l=linux-btrfs&m=131495014823121&w=2
>
> With this bug fixed, I think autodefrag won't be prob
On Tue, Oct 11, 2011 at 1:19 AM, Li Zefan wrote:
> Was any process doing heavy I/O work while you were defragging the file?
>
> Could you try to remount the fs without autodefrag, and defrag
> the file again? Firstly let's see if autodefrag makes things worse.
>
As far as I can tell, autodefrag s
Kernel 3.1-rc8
btrfs-progs-0.19
mount options: noatime,autodefrag (space_cache is enabled)
There are snapshots present on the filesystem.
When I do a btrfs fi defrag on a file, the file becomes much more
fragmented. The end result can be a file with 20k times more fragments
than before. Initially
On Thu, Oct 6, 2011 at 10:31 AM, Jeff Putney wrote:
>> No, in this case it means we're confident it will get rolled out.
>
> On Aug 18th confidence was high enough to declare a possible release
> that very day. This confidence turned into 7 weeks of silence
> followed by another 2 week estimate.
I just dd every file on the filesystem and I got no error message in
dmesg, so I don't even know if I should be worried or not.
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btrfsck status updates don't appear too often on the mailing list. But
when they do, they end up in the btrfs wiki page anyway. That's where
users like you and I should look.
I like hanging out here just to see what's coming from upstream
On Thu, Sep 1, 2011 at 10:01 AM, Swâmi Petaramesh wrote:
>
One question. Will the autodefrag option be snapshot aware? Would
enabling this option double the amount of used space if there is a
snapshot present?
On Fri, May 27, 2011 at 2:55 PM, Chris Mason wrote:
>
> Hi everyone,
>
> I always thought that I'd be retired and with my flying car at the
> beac
>
> Out of curiosity, why isn't this done automatically as opposed to
> having to mount with the space_cache option?
The space_cache option changes the disk format. Once enabled, it will
be permanent. The mount option gives people an option of whether they
want to enable space_cache.. I've been us
I'm not a developer, but I think it goes something like this:
btrfs doesn't write the filesystem on the entire device/partition at
format time, rather, it dynamically increases the size of the
filesystem as data is used. That's why formating a disk in btrfs can
be so fast.
On Wed, Mar 23, 2011 at
I'm sure this is possible if you use /dev/md's, but doesn't this
basically make the redundancy of the raid10 useless?
On Wed, Feb 16, 2011 at 8:50 PM, Gal Buki wrote:
> Hi
>
> I have RAID 10 using 4 times 500GB drives (1TB of storage).
> Is it possible to create another RAID 10 with 4 times 250GB
Also, btrfs already has a utility to scan for subvolumes in a directory
btrfs subvolume list /path
On Sun, Jan 23, 2011 at 12:02 PM, Goffredo Baroncelli
wrote:
> On 01/23/2011 04:05 PM, Lubos Kolouch wrote:
>> Goffredo Baroncelli, Sun, 23 Jan 2011 13:17:13 +0100:
>>
>>> Hi Lubos,
>>>
>>> On 01/2
Btrfs has its own wiki page at https://btrfs.wiki.kernel.org which you
may find more helpful than what is on wikipedia.
2011/1/20 Benoît Thiébault :
> Thanks for your answer
>
> Le 20 janv. 2011 à 22:20, Chris Mason a écrit :
>
>> There was a bug fixed as part of that discussion, and I think I als
You might need to build an initramfs image for your kernel to mount,
to help mount your btrfs filesystem. You may want to read Gentoo's
guide for initramfs
http://en.gentoo-wiki.com/wiki/Initramfs
On Thu, Nov 18, 2010 at 12:14 AM, wrote:
> Hi,
>
> I have read that for using raid1 btrfs device s
I think that means that the fixes in the newer versions will also be
included in the previous versions.
On Sat, Oct 16, 2010 at 8:46 AM, Leonidas Spyropoulos
wrote:
>
> On Thu, Oct 14, 2010 at 5:42 PM, Chris Mason wrote:
> > On Thu, Oct 14, 2010 at 12:45:59PM +0100, Leonidas Spyropoulos wrote:
>
I think I read/heard somewhere that snapshots can cause pretty bad
fragmentation, because it causes your system to write changes to files
to random locations on the disk, leaving the original inodes intact..
For that reason, I have replaced the directories ~/.config/chromium ,
/var , /usr/portage w
If I were to use the defrag option in btrfsctl,
$ btrfsctl -d /
would it also defragment the subvolumes under the root?
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I once tried to copy a chroot onto a USB mount, mounted with the
'compress,noatime' option, and the same thing kept happening to me. I
started using slower methods to transfer the files over, and I no
longer encountered the hanging problem. I was not copying any big
files, but it was a chroot, so t
2010 at 03:43:52AM -0500, Chester wrote:
>> Hi, I'm aware that btrfs doesn't have a functioning fsck tool that
>> fixes errors.
>> I was just wondering (I'm sure many are, also) if there is a working
>> btrfsck somewhere in the pipeline.
>> If there
Hi, I'm aware that btrfs doesn't have a functioning fsck tool that
fixes errors.
I was just wondering (I'm sure many are, also) if there is a working
btrfsck somewhere in the pipeline.
If there is some sort of rough estimate to when it'll be available,
please state it here.
If you're not confident
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