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Date: Fri, 05 Jun 2015 07:25:24 +0800
From: Anand Jain <anand.jain@oracle.com>
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To: Roger Binns <rogerb@rogerbinns.com>, linux-btrfs@vger.kernel.org
Subject: Re: btrfs device ready non-success exit code
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On 06/05/2015 01:57 AM, Roger Binns wrote:
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> Hash: SHA1
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> This is on current Ubuntu 15.04.  What is device ready unhappy with?
> Note that the root filesystem and /home (both subvolumes of this) are
> mounted and working perfectly, and even where the commands are run from.
>
> $ sudo btrfs fi show /dev/sda1
> Label: 'main'  uuid: 3ff68715-0daa-4e44-8de2-0997f36d8ab6
> 	Total devices 2 FS bytes used 417.22GiB
> 	devid    2 size 894.25GiB used 362.03GiB path /dev/sdb1
> 	devid    3 size 894.25GiB used 362.03GiB path /dev/sda1
>
> Btrfs v3.17
> $ sudo btrfs fi show /
> Label: 'main'  uuid: 3ff68715-0daa-4e44-8de2-0997f36d8ab6
> 	Total devices 2 FS bytes used 417.22GiB
> 	devid    2 size 894.25GiB used 362.03GiB path /dev/sdb1
> 	devid    3 size 894.25GiB used 362.03GiB path /dev/sda1
>
> Btrfs v3.17
> $ sudo btrfs device ready /dev/sda1 ; echo $?
> 1
> $ sudo btrfs device ready /dev/sdb1 ; echo $?
> 1


typically ready cli is to check disk pool status in an unmounted state.

Strictly we wanted ready cli to be a read only cli, but it updates the 
device path as well, which eventually I think we will fix it, if the
systemd won't compliant about it.

-Anand


> $ uname -a
> Linux workstation 3.19.0-18-generic #18-Ubuntu SMP Tue May 19 18:31:35
> UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
>
> Roger
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> =foM6
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