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Date: Thu, 8 Nov 2012 23:44:33 +0100
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Subject: error checking mount status
From: vj <vicencb@gmail.com>
To: linux-btrfs@vger.kernel.org
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Hello,
when executing "mkfs.btrfs fs_file" as unprivileged user I'm getting this error
"error checking fs_file mount status"
where fs_file is a regular file, not a device
This problem is only reproducible when "/dev/loop0" is busy

mkfs.btrfs --version
mkfs.btrfs, part of Btrfs Btrfs v0.19

Regards,
  Vicente Bergas