On Tue, May 16, 2017 at 03:58:41AM +0200, Kai Krakow wrote:
> Am Mon, 15 May 2017 22:05:05 +0200
> schrieb Tomasz Torcz <to...@pipebreaker.pl>:
>
> > > Yes, I considered that, too. And when I tried, there was almost no
> > > perceivable performance diff
y 2 years
The workload is lightly utilised home server / media center.
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1 when I got another disk. The issue you've stumbled across is only
> partial motivation for this, the bigger motivation is that running half a 2
> disk array is more risky than running a single disk by itself.
Again, why? What's the difference? What causes increased risk?
e OOM is now going crazy and trying to kill whatever it
> can including my ssh and rsync process. Anyone seen anything similar?
That's probably OOM regression in 4.7. Could you please test this patch:
https://lkml.org/lkml/2016/8/23/145
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On Tue, Aug 09, 2016 at 01:50:04PM +0200, Thomas wrote:
> Hello!
>
> I'm facing a severe issue with Debian installation using BTRFS:
> errno:28 (No space left on device)
Sending this message 3x won't make it more important.
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On Mon, Jul 11, 2016 at 07:17:28AM -0400, Austin S. Hemmelgarn wrote:
> On 2016-07-11 03:26, Tomasz Torcz wrote:
> > On Tue, Jun 21, 2016 at 11:16:59AM -0400, Austin S. Hemmelgarn wrote:
> > > Currently, balance operations are run synchronously in the foreground.
> > > T
n be done with simplest systemd unit file:
btrfs-balance@.service:
---
[Unit]
Description=btrfs balance for %I
[Service]
ExecStart=/usr/bin/btrfs balance start %I
ExecStop=/usr/bin/btrfs balance cancel %I
---
It automates quite nicely and needs no additional code.
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one
>
> as part of startup sequence? And note that nowhere is systemd involved so far.
Getting rid of such loops was the original motivation for the ioctl:
http://www.spinics.net/lists/linux-btrfs/msg17372.html
Maybe the ioctl need extending? Instead of returning 1/0, it could
take flag sa
e
with existing encrypting filesystems:
– ext4 ?
– ZFS ?
It would be nice to have common API for encryption, not a dozen
of filesystem-specific interfaces.
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if it could be reduced.
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with 0 errors
I guess I'll have to check the patch Marc pointed out.
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On Fri, Oct 17, 2014 at 08:53:06AM -0400, Chris Mason wrote:
On Fri, Oct 17, 2014 at 4:54 AM, Tomasz Torcz to...@pipebreaker.pl wrote:
On Fri, Oct 17, 2014 at 04:29:36PM +0800, Liu Bo wrote:
On Fri, Oct 17, 2014 at 10:10:09AM +0200, Tomasz Torcz wrote:
On Fri, Oct 17, 2014 at 04:02:03PM
On Fri, Oct 17, 2014 at 11:01:51AM -0400, Chris Murphy wrote:
On Oct 16, 2014, at 5:17 AM, Tomasz Torcz to...@pipebreaker.pl wrote:
Broken files are in /var/log/journal directory. This directory
is set NOCOW with chattr, all the files within too.
Example of broken file:
system
started
scrub of full volume. It will take some hours to finish.
Meanwhile, could you satisfy my curiosity what would scrub do that
wouldn't be done by just reading the whole file?
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On Fri, Oct 17, 2014 at 04:29:36PM +0800, Liu Bo wrote:
On Fri, Oct 17, 2014 at 10:10:09AM +0200, Tomasz Torcz wrote:
On Fri, Oct 17, 2014 at 04:02:03PM +0800, Liu Bo wrote:
Recently I've observed some corruptions to systemd's journal
files which are somewhat puzzling
Hi,
Recently I've observed some corruptions to systemd's journal
files which are somewhat puzzling. This is especially worrying
as this is btrfs raid1 setup and I expected auto-healing.
System details: 3.17.0-301.fc21.x86_64
btrfs: raid1 over 2x dm-crypted 6TB HDDs.
mount opts:
with 3.16.1-1-ARCH kernel, fully running on BTRFS (with LZO
compression) over LVM over LUKS.
Have you applied Liu's patch[1]? It not useful reporting knows bugs, if
you haven't.
1 – http://www.spinics.net/lists/linux-btrfs/msg36616.html
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Tomasz Torcz
On Wed, Jun 11, 2014 at 08:11:38PM +0800, Wang Shilong wrote:
So the problem is RW opening would trigger udev event which will
call btrfs_scan_one_device(). In btrfs_scan_one_device(), it
would open the block device with EXCL flag..meanwhile if another
program try to open that device with
CPU. Since 2008, Intel CPUs have crc32 instruction,
hugely speeding up CRC operations.
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On Wed, Apr 23, 2014 at 06:19:52PM -0700, Marc MERLIN wrote:
Oh while we're at it, are there companies that can say they are using btrfs
in production?
Jolla is selling smartphones with btrfs.
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ideas at
https://btrfs.wiki.kernel.org/index.php/Project_ideas and am especially
interested in working on one of the following topics:
Have you considered per-file/per-directory selection of raid level?
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, do not need to
reformat backing storage.
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/systemd/commit/?id=746f89063666be8c4d538271c646585ac4fc4353
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On Fri, Mar 15, 2013 at 02:52:29PM -0400, Josef Bacik wrote:
This fixes up the progs to properly deal with skinny metadata. This adds the
-x
option to mkfs and btrfstune for enabling the skinny metadata option. This
also
makes changes to fsck so it can properly deal with the skinny
bzImage use 'bzImage' as kernel image
-append cmdline use 'cmdline' as kernel command line
-initrd fileuse 'file' as initial ram disk
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Hi,
I believe XOR_BLOCKS must be selected, otherwise build fails with:
ERROR: xor_blocks [fs/btrfs/btrfs.ko] undefined!
diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index 4f5dc93..5f583c8 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -7,6 +7,7 @@ config BTRFS_FS
select
[gkm]|[devid:]max path
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On Sat, Feb 02, 2013 at 03:03:48PM -0600, CSights wrote:
Hello,
btrfs is failing to mount if I use the mount option acl.
There is no such option. ACLs are enabled by default, you can
only disable them with noacl option.
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you need to get branch dangerdonoteveruse to get real fsck code.
sudo mount -t btrfs /dev/sda /mnt/disk/
Could you try with -o recovery?
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On Tue, Jul 17, 2012 at 11:14:17AM +0200, David Sterba wrote:
The original patch named the option -T, mkfs.xfs uses -K let's keep it
same.
mkfs.ext2 used to have -K also, so one more +1 for this patch.
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. It is typically done from udev rules. Also,
dracut does it in initramfs for quite a long time.
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is not that different anymore.
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for any help you can provide.
Restriping had landed, so it should be doable.
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?
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More
and selective encryption like in
ZFS.
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On Fri, May 06, 2011 at 01:04:28PM -0700, cac...@quantum-sci.com wrote:
Anyone here?
Could you create link from you root parition to /dev/root and try again?
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. I
presume it is due to free space that isn't zeroed out.
Does btrfs issue TRIM commands to the underlying (virtual) block device?
It does when mounted with - o discard. IIRC, btrfs also supports
FITRIM ioctl (but I'm not 100% sure about this).
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Tomasz Torcz RIP
— cleancache
— btrfs temperature tracking
— dm-hstore
— dm-cache / flashcache
Patches are in various states of implementation, some with explicit btrfs
support. There's no clear winner at this time, but some of above solutions
are shipped in distro kernels.
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by manipulating
metadata only?
Yes, see reflink(2) syscall (http://lwn.net/Articles/331576/).
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, reshape_position etc.
/proc file is legacy.
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levels of data and meta data for an
existing btrfs filesystem? It's easy to pick them when creating the
system, but I couldn't find any way to view them afterwards.
btrfs f df will show them, except for few kernel releases when the ioctl()
was broken.
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On Tue, Oct 12, 2010 at 10:49:35AM +0100, Hugo Mills wrote:
On Tue, Oct 12, 2010 at 11:34:31AM +0200, Tomasz Torcz wrote:
On Tue, Oct 12, 2010 at 11:32:07AM +0200, David Brown wrote:
Is it possible to view the raid levels of data and meta data for an
existing btrfs filesystem? It's easy
it.
I'm not aware of this at the moment. However, there are data-temperature
tracking patches. Their point is to move hot data into faster storage.
I believe they can grow into generic infrastructure to inform filesystems
about non-homogenous nature of underlaying storage.
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Tomasz Torcz
and some fast SAS ones ?
I'm hoping that this is just first cut, and future versions will have options.
For now, it is totally unusable without a way of using mirrored SSD for
hot data.
Ideally, hot storage devices should be online selectable and changeable.
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Tomasz Torcz
or something like that? Download the source code, and follow
what it says in the INSTALL file?
Of course it is. Fedora installer allows btrfs since for few releases now.
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reports as 5 devices with #2 (the original slot for sda8)
now vacant - dare I say missing. It reports as *** Some devices missng
This seems counter intuitive to me. Suggestions ?.
You can pass missing to btrfs device delete.
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probing is general way kernel
subsystem are going, it is more flexible.
And dracut already has btrfs module.
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, I've moved to userspace iSCSI implementation,
which works fine.
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RAID[56] support
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(LKML)
pgpapzVu6MwL7.pgp
Description: PGP signature
asked dracut guys for including btrfs support.
Current result is here:
http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut;a=tree;f=modules.d/90btrfs
It still being polished a little.
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is not a valid block device
root.2010-01-07 is a snapshot of the /root-directory
taken (successfully) with the following command:
btrfsctl -s root.2010-01-07 /root
Snapshots aren't subvolumes. You create mountable subvolumes with
btrfsctl -S
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On Mon, Oct 26, 2009 at 05:55:45PM +0900, Chris Mason wrote:
On Wed, Oct 21, 2009 at 11:27:33AM +0200, Tomasz Torcz wrote:
On Thu, Oct 01, 2009 at 11:01:46AM +0200, Tomasz Torcz wrote:
On Wed, Sep 30, 2009 at 09:43:51PM +0200, Tomasz Torcz wrote:
If you're comparing w/ext3
On Wed, Sep 30, 2009 at 09:43:51PM +0200, Tomasz Torcz wrote:
If you're comparing w/ext3 and wondering why btrfs is sooo much
slower it might be because btrfs has barriers on by default and ext3
doesn't. You could mount -o nobarrier for btrfs or mount -o barrier=1
for ext3
On Mon, Sep 28, 2009 at 09:35:43AM -0400, Chris Mason wrote:
On Mon, Sep 28, 2009 at 02:18:27PM +0200, Tomasz Torcz wrote:
Hi,
I'm using btrfs as rootfs on my Fedora 12 (rawhide) test system.
Every yum activity is very slow, like 15 minutes for installation of 11
packages 25MB
[.] __GI_memcpy
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r b swpd free buff cache
, that what's so great in checksumming filesystems.
You found bad module thanks to btrfs, otherwise you wouldn't suspect
anything wrong. If you have had raid-1 for data, this corruption would
have been fixed by btrfs.
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On Wed, Jul 22, 2009 at 10:40:31AM -0400, Chris Mason wrote:
On Wed, Jul 22, 2009 at 01:27:06PM +0200, Tomasz Torcz wrote:
Hi,
I tried to export file from btrfs volume using iSCSI target.
As soon as some initiator have read it over network, server
oopsed: http://www.kerneloops.org
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of FS-Cache also.
¹ first-level is page cache in RAM
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and merge ZFS with btrfs.
Just kidding, I don't think it would be technically feasible.
(OTOH, acquiring Sun's patent portfolio… there are some strange places
on earth where people care about software patents).
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. This way
you can avoid implementing crc32 for each architecture (like, for
example UltraSPARC T2, which computes crc at healthy 48 GB/s).
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, given todays 1,5TB HDDs.
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