From: Stefan Priebe - Profihost AG <s.priebe-2Lf/h1ldwEHR5kwTpVNS9A@public.gmane.org>
To: Gabriel de Perthuis <g2p.code-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: blkid always detects FS
Date: Tue, 27 Aug 2013 15:04:02 +0200 [thread overview]
Message-ID: <521CA3C2.9040100@profihost.ag> (raw)
In-Reply-To: <kvi4bp$nvo$2@ger.gmane.org>
Am 27.08.2013 13:59, schrieb Gabriel de Perthuis:
> On Tue, 27 Aug 2013 11:31:41 +0200, Stefan Priebe - Profihost AG wrote:
>> For all my bcache devices blkid returns:
>>
>> # /sbin/blkid -o udev /dev/sdd1
>> ID_FS_UUID=6937d2e6-c8e3-4590-954b-65937fc23a52
>> ID_FS_UUID_ENC=6937d2e6-c8e3-4590-954b-65937fc23a52
>> ID_FS_TYPE=xfs
>>
>> What's wrong here? All disks have XFS on top of bcache running.
>
> The udev rules were changed to reject bcache devices with a
> pre-existing superblock (xfs in your case).
>
> This was done to fail early when there's a risk of exposing an
> unsynchronised backend device, which would be a bad thing™.
>
> You can remove the stray superblocks with wipefs.
shouldn't bcache-create wipe the superblock?
Stefan
prev parent reply other threads:[~2013-08-27 13:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-27 9:31 blkid always detects FS Stefan Priebe - Profihost AG
2013-08-27 11:59 ` Gabriel de Perthuis
2013-08-27 13:04 ` Stefan Priebe - Profihost AG [this message]
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