* 2.6.29-rc1: Cannot loopback mount btrfs formatted file
@ 2009-01-11 21:44 Peter Klotz
[not found] ` <200901120015.14521.mail@earthworm.de>
0 siblings, 1 reply; 2+ messages in thread
From: Peter Klotz @ 2009-01-11 21:44 UTC (permalink / raw)
To: linux-btrfs
Since 2.6.29-rc1 contains btrfs I had to try it.
However the loopback mount of my btrfs formatted file fails:
user@host:~$ dd if=/dev/zero of=btrfs.img bs=1MB count=512
user@host:~$ mkfs.btrfs btrfs.img
fs created label (null) on btrfs.img
nodesize 4096 leafsize 4096 sectorsize 4096 size 488.28MB
Btrfs v0.16+da35ab2b0b54
user@host:~$ sudo mount -t btrfs -o loop btrfs.img /mnt/btrfs
mount: /dev/loop1: can't read superblock
Is this version of mkfs.btrfs compatible with the kernel module in
2.6.29-rc1?
Any help is appreciated.
Regards, Peter.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: 2.6.29-rc1: Cannot loopback mount btrfs formatted file
[not found] ` <200901120015.14521.mail@earthworm.de>
@ 2009-01-12 6:14 ` Peter Klotz
0 siblings, 0 replies; 2+ messages in thread
From: Peter Klotz @ 2009-01-12 6:14 UTC (permalink / raw)
To: linux-btrfs
Christian Hesse wrote:
> On Sunday 11 January 2009, Peter Klotz wrote:
>> Since 2.6.29-rc1 contains btrfs I had to try it.
>>
>> However the loopback mount of my btrfs formatted file fails:
>>
>> user@host:~$ dd if=/dev/zero of=btrfs.img bs=1MB count=512
>>
>> user@host:~$ mkfs.btrfs btrfs.img
>> fs created label (null) on btrfs.img
>> nodesize 4096 leafsize 4096 sectorsize 4096 size 488.28MB
>> Btrfs v0.16+da35ab2b0b54
>>
>> user@host:~$ sudo mount -t btrfs -o loop btrfs.img /mnt/btrfs
>> mount: /dev/loop1: can't read superblock
>>
>>
>> Is this version of mkfs.btrfs compatible with the kernel module in
>> 2.6.29-rc1?
>
> You have to use the btrfs-progs from unstable git repository. Chris plans to
> release a new stable version within one day though.
Thanks, Btrfs v0.16-40-g6a63d49 worked fine.
Regards, Peter.
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2009-01-11 21:44 2.6.29-rc1: Cannot loopback mount btrfs formatted file Peter Klotz
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2009-01-12 6:14 ` Peter Klotz
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