linux-kernel - NILFS2: double uuid

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Date:	Mon, 8 Jun 2015 08:43:14 +0200
From:	Heinz Diehl <htd+ml@...tha.org>
To:	linux-kernel@...r.kernel.org
Cc:	Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
Subject: NILFS2: double uuid

Hi,

a nilfs2 formatted disk fails to mount via fstab due to double uuid's.
See lsblk output below. The logs indicate that the system attempts to
mount /dev/sdb rather than /dev/sdb1, which of course fails. In
addition, /dev/sdb should not have any uuid at all. Don't know why
that happens.

The phenomenon is easily reproducible: format a partition with nilfs2,
register it with the proper uuid in fstab and reboot. Tried both with
USB memory and real HDD.

[root@...ra ~]# lsblk -f
NAME        FSTYPE LABEL UUID                                 MOUNTPOINT
sdb                      ff17dda9-fcae-42e7-a438-9087de58902e                                      
`-sdb1      xfs          ff17dda9-fcae-42e7-a438-9087de58902e 

Thanks,
 Heinz

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