Displaying 20 results from an estimated 2000 matches similar to: "Bug in mkfs.btrfs?!"
2009 Nov 18
1
To loop or not to loop with btrfs
Hi,
This left me puzzled for a while:
22:29 borg:/ # losetup /dev/loop1 /.B.disk
22:29 borg:/ # mount /dev/loop1 /B
mount: /dev/loop1: can''t read superblock
22:29 borg:/ # blkid /dev/loop1
/dev/loop1: UUID="e19fe89b-cde3-4ccc-bc70-b759a57bd1c9"
UUID_SUB="f29c6218-d040-4546-a227-4dd2d2142817" TYPE="btrfs"
22:29 borg:/ # losetup -d /dev/loop1
22:29 borg:/ #
2013 Oct 21
11
swapfile on btrfs, temporary solution for wiki
Hello list, i know what btrfs don''t support swap files.
I read arch wiki and when i reading about systemd addon for auto
create swapfile on btrfs, i invent the way, how create and using swap
file, just see following sh code:
swapfile=$(losetup -f) #free loop device
truncate -s 8G /swap #create 8G sparse swap file
losetup $swapfile /swap #mount file to loop
mkswap $swapfile
swapon
2011 Sep 05
17
Rename BTRfs to MuchSlowerFS ?
Hi list,
I don''t trust theoretical benchmarks that much and prefer "real-life
benchs" on the occasion, so here''s mine:
Given 4 laptops, the most powerful of which was running BTRFS and the
others ext3 or ext4, all machines running Ubuntu 11.04 Natty 32-bit with
a stock Ubuntu 2.6.38-11 kernel, all machines were given the following
FS-intensive task :
- Upgrade
2013 Sep 05
9
btrfs-convert won't convert ext* - No valid Btrfs found on /dev/sdb1
Hello guys, i try to convert ext4 volume, but btrfs-convert show me error:
"No valid Btrfs found on file
unable to open ctree
conversion aborted."
Ubuntu 13.04
Kernel: 3.11
btrfs-progs git version 0.20-git20130822~194aa4a13
way to reproduce error:
$ truncate -s 4G file
$ mkfs.ext4 file #say yes to create fs on non block device.
$ btrfs-convert file
No valid Btrfs found on file
unable
2011 Apr 09
16
wrong values in "df" and "btrfs filesystem df"
Hallo, linux-btrfs,
First I create an array of 2 disks with
mkfs.btrfs -d raid0 -m raid1 /dev/sdb1 /dev/sdd1
and mount it at /srv/MM.
Then I fill it with about 1,6 TByte.
And then I add /dev/sde1 via
btrfs device add /dev/sde1 /srv/MM
btrfs filesystem balance /srv/MM
(it run about 20 hours)
Then I work on it, copy some new files, delete some old files - all
works well. Only
df
2013 Jan 03
33
Option LABEL
Hallo, linux-btrfs,
please delete the option "-L" (for labelling) in "mkfs.btrfs", in some
configurations it doesn''t work as expected.
My usual way:
mkfs.btrfs -d raid0 -m raid1 /dev/sdb /dev/sdc /dev/sdd ...
One call for some devices.
Wenn I add the option "-L mylabel" then each device gets the same label,
and therefore some other programs
2011 Aug 14
3
cant mount degraded (it worked in kernel 2.6.38.8)
# uname -a
Linux dhcppc1 3.0.1-xxxx-std-ipv6-64 #1 SMP Sun Aug 14 17:06:21 CEST
2011 x86_64 x86_64 x86_64 GNU/Linux
mkdir test5
cd test5
dd if=/dev/null of=img5 bs=1 seek=2G
dd if=/dev/null of=img6 bs=1 seek=2G
losetup /dev/loop2 img5
losetup /dev/loop3 img6
mkfs.btrfs -d raid1 -m raid1 /dev/loop2 /dev/loop3
btrfs device scan
btrfs filesystem show
Label: none uuid:
2011 Oct 17
4
https://btrfs.wiki.kernel.org/index.php/Main_Page
Does not load. Wondering if this should work or has been moved ?
Thanks, Anand
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2013 Dec 09
5
Btrfs questions
i am looking at using btrfs for a new project and i have a few questions:
* i have heard that as it currently stands Btrfs has some issues to be used as a Lustre file system; is he aware of the issues and any plans to address these and integrate Btrfs in to Lustre
* any plans to support native clustering on Btrfs
* on ZFS the ZIL is a separate device, any plans to implement a the
2006 Oct 23
14
SDL display of HVMs -- how?
I''m having some trouble working out how to make the SDL interface
for HVM domUs appear. The documentation simply says "it will appear"
when you start the domU, but doesn''t state what packages or libraries
are needed in order for this magic to happen, or explain how to debug
it if it doesn''t happen. All that I''m getting at the moment is a domU
(running
2013 Nov 24
3
The state of btrfs RAID6 as of kernel 3.13-rc1
Hi
What is the general state of btrfs RAID6 as of kernel 3.13-rc1 and the
latest btrfs tools?
More specifically:
- Is it able to correct errors during scrubs?
- Is it able to transparently handle disk failures without downtime?
- Is it possible to convert btrfs RAID10 to RAID6 without recreating the fs?
- Is it possible to add/remove drives to a RAID6 array?
Regards,
Hans-Kristian
--
To
2013 May 10
5
Btrfs balance invalid argument error
Hi list,
I am using kernel 3.9.0, btrfs-progs 0.20-rc1-253-g7854c8b.
I have a three disk array of level single:
# btrfs fi sh
Label: none uuid: 2e905f8f-e525-4114-afa6-cce48f77b629
Total devices 3 FS bytes used 3.80TB
devid 1 size 2.73TB used 2.25TB path /dev/sdd
devid 2 size 2.73TB used 1.55TB path /dev/sdc
devid 3 size 2.73TB used 0.00 path /dev/sdb
2012 Jun 05
13
New btrfs-progs integration branch
I''ve just pushed out a new integration branch to my git repo. This
is purely bugfix patches -- there are no new features in this issue of
the integration branch. I''ve got a stack of about a dozen more patches
with new features in them still to go. I''ll be working on those
tomorrow. As always, there''s minimal testing involved here, but it
does at least compile on
2006 Nov 06
3
RHEL4 as 64-bit HVM guest -- not starting in 64 bit mode
I''m trying to install RHEL 4 on an HVM (Core 2 Duo). However, when
the RHEL installer tries to start the kernel, it complains that the
CPU doesn''t support extended mode, and that I should use a 32-bit
installer.
However:
hrm@willow:~$ sudo xm info | grep xen_caps
xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
Is there some magic I
2013 Jun 20
10
Two identical copies of an image mounted result in changes to both images if only one is modified
Hi,
I''ve observed a rather strange behaviour while trying to mount two
identical copies of the same image to different mount points.
Each modification to one image is also performed in the second one.
Example:
dd if=/dev/sda? of=image1 bs=1M
cp image1 image2
mount -o loop image1 m1
mount -o loop image2 m2
touch m2/hello
ls -la m1 //will now also include a file calles "hello"
2013 Feb 06
3
btrfs balance -> hang/crash
Hi,
my btrfs "hangs" when doing a balance operation.
I''m using a 3.7.1 kernel from opensuse: linux-opzz 3.7.1-2.10-m4 #11 SMP
PREEMPT Fri Jan 11 18:04:04 CET 2013 x86_64 x86_64 x86_64 GNU/Linux
and Btrfs v0.19+
I did a scrub which completed without errors. Then I tried "btrfs filesystem
balance /" which work fine for the first 23 of 46 chunks, then ist stopped
2012 Jan 13
5
Can't resize second device in RAID1
Hi,
the situation:
Label: ''RootFS'' uuid: c87975a0-a575-405e-9890-d3f7f25bbd96
Total devices 2 FS bytes used 284.98GB
devid 2 size 311.82GB used 286.51GB path /dev/sdb3
devid 1 size 897.76GB used 286.51GB path /dev/sda3
RootFS created when sda3 was 897.76GB and sdb3 311.82GB.
I have now freed other space on sdb. So I deleted sdb3 and recreated
it occupying all
2012 Oct 27
7
How does btrfs behave on checksum mismatch?
I came across the tidbit that ZFS has a contract guarantee that the
data read back will either be correct (the checksum computed over the
data read from the disk matches the checksum stored on disk), or you
get an I/O error. Obviously, this greatly reduces the probability that
the data is invalid. (Particularly when taken in combination with the
disk firmware''s own ECC and checksumming.)
2011 Aug 03
6
BTRFS partition won't mount
Hello all,
I recently had a power failure and can no longer mount my /home directory. The harddrive has two BTRFS partitions: sda7(/) and sda8(/home). The / partition loads up just fine, but /home does not. I''ve tried btrfsck as shown below and I''ve included dmesg pertaining to btrfs. This is on ArchLinux and the software versions are as follows:
btrfs-progs-unstable
2011 Aug 22
2
btrfs over nfs
I have been experimenting exporting btrfs subvolumes over nfs. Main
subvolume is filesys1 mounted at /filesys1. Below this is subvolume
base, user1 is in base and documents is in user1. documents is
mounted at /documents. /etc/exports is:
/filesys1/base/user1 172.16.0.0/24(rw,no_acl,no_root_squash,fsid=0)
/filesys1/user1-snapshot 172.16.0.0/24(rw,no_acl,no_root_squash,fsid=0)