Hi Sebastian,
I posted a similar question and got many helpful answers:
https://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg35047.html
Basically, you cannot guarantee that the computing mounting /dev/sdx
doesn't write to arbitrary addresses of /dev/sdxN as unallocated
blocks and thus corr
, Qu Wenruo wrote:
>
> Original Message
> Subject: [Question] disk_bytenr with multiple devices
> From: Zhe Zhang
> To: linux-btrfs@vger.kernel.org
> Date: 2014年07月11日 02:21
>>
>> When a btrfs has multiple devices (e.g. /dev/sdb, /dev/sdc), how
>
When a btrfs has multiple devices (e.g. /dev/sdb, /dev/sdc), how
should I interpret disk_bytenr in btrfs_file_extent_item?
Does it depend on the striping config? Say I used raid0, then
disk_bytenr 0~64K will be on /dev/sdb, and 64K~128K on /dev/sdc?
Thanks,
Zhe
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Thanks Hugo, that works great.
On Wed, Jul 2, 2014 at 12:31 PM, Hugo Mills wrote:
> On Wed, Jul 02, 2014 at 12:23:01PM -0400, Zhe Zhang wrote:
>> Hi,
>>
>> I'm trying to use a functionality like "debugfs blocks" or
>> "dump_extents" on a btrfs
Hi,
I'm trying to use a functionality like "debugfs blocks" or
"dump_extents" on a btrfs partition. The current debugfs user space
program doesn't seem to support it (from e2fsprogs). I cannot find
debugfs in btrfs-progs either. Any advice on how to do it?
Thanks!
Zhe
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On Fri, Jun 27, 2014 at 1:15 PM, Austin S Hemmelgarn
wrote:
> On 2014-06-27 12:34, Goffredo Baroncelli wrote:
>> Hi,
>> On 06/27/2014 05:44 PM, Zhe Zhang wrote:
>>> Hi,
>>>
>>> I setup 2 Linux servers to share the same device through iSCSI. Then I
>>
Hi,
I setup 2 Linux servers to share the same device through iSCSI. Then I
created a btrfs on the device. Then I saw the problem that the 2 Linux
servers do not see a consistent file system image.
Details:
-- Server 1 running kernel 2.6.32, server 2 running 3.2.1
-- Both running btrfs v0.20-rc1
-
