Re: mkfs.btrfs - error checking /dev/sda5 mount status

[Lubos Kolouch <lubos.kolouch@gmail.com>]

Goffredo Baroncelli, Wed, 09 Feb 2011 19:25:34 +0100:

> On 02/08/2011 10:26 PM, Lubos Kolouch wrote:
>> Goffredo Baroncelli, Tue, 08 Feb 2011 21:00:25 +0100:
>> 
>>> On 02/08/2011 07:57 AM, Lubos Kolouch wrote:
>>>> Hi,
>>>>
>>>> I'm hitting this issue - sda5 is a normal device, nothing to do with
>>>> loop, encryption etc.
>>>>
>>>> # mkfs.btrfs /dev/sda5
>>>>
>>>> WARNING! - Btrfs v0.19-35-g1b444cd-dirty IS EXPERIMENTAL WARNING! -
>>>> see http://btrfs.wiki.kernel.org before using
>>>>
>>>> error checking /dev/sda5 mount status
>>>>
>>>> Is there something I can do to resolve this?
>>>
>>> Some months ago I posted a patch [*] which allows to create a
>>> filesystem even if an integrity tests fail.
>>> Anyway it would be interesting understand why mkfs.btrfs fails. It is
>>> possible to have a strace of the command ?
>>>
>>>
>> here ... http://paste.pocoo.org/show/334638/ but it is not in chroot,
>> it is in "normal" system
>> 
>> Lubos
>> 
>> 
> Hi Lubos,
> 
> Could you post also the output of "cat /proc/mounts" command and the
> output of "btrfs filesystem show" command. I cannot understand what
> should be the problem.

Hi Goffredo,

Sure,
# cat /proc/mounts

rootfs / rootfs rw 0 0
/dev/root / btrfs rw,noatime,compress,ssd 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
rc-svcdir /lib/rc/init.d tmpfs 
rw,nosuid,nodev,noexec,relatime,size=1024k,mode=755 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 
0 0
debugfs /sys/kernel/debug debugfs rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs 
rw,nosuid,relatime,size=10240k,nr_inodes=217934,mode=755 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
none /dev/pts devpts rw,relatime,mode=600,ptmxmode=000 0 0
none /dev/shm tmpfs rw,relatime 0 0
/dev/sda1 /boot ext2 rw,relatime,errors=continue 0 0
none /var/tmp/portage tmpfs rw,relatime 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc 
rw,nosuid,nodev,noexec,relatime 0 0
/dev/mapper/_dev_sda6 /home btrfs rw,noatime,compress,ssd 0 0

# btrfs filesystem show

Label: none  uuid: fd070c17-e98b-4b50-9fa8-3453482aafa2
	Total devices 1 FS bytes used 5.51GB
	devid    1 size 18.64GB used 10.79GB path /dev/sda2

Label: none  uuid: bf9a1b00-f8bd-44d3-b140-10eea088a60e
	Total devices 1 FS bytes used 6.73GB
	devid    1 size 19.54GB used 19.54GB path /dev/sda5

Label: none  uuid: ae0ba016-1945-4e7a-9fb4-e9311d199727
	Total devices 1 FS bytes used 57.50GB
	devid    1 size 78.91GB used 78.91GB path /dev/dm-0

# mkfs.btrfs /dev/sda5

WARNING! - Btrfs v0.19-35-g1b444cd-dirty IS EXPERIMENTAL
WARNING! - see http://btrfs.wiki.kernel.org before using

error checking /dev/sda5 mount status

Also, I can mount it no problem - strange, isn't it

Lubos