From: Mark Murawski <markm-lists@intellasoft.net>
To: unlisted-recipients:; (no To-header on input)
Cc: linux-btrfs@vger.kernel.org
Subject: Re: btrfs listing is wrong
Date: Wed, 17 Sep 2014 00:22:08 -0400 [thread overview]
Message-ID: <54190C70.1030501@intellasoft.net> (raw)
In-Reply-To: <5413E3CB.4050800@oracle.com>
Root is mounted. This is the same picture after several reboots.
I've actually did some switching things around, drive swaps and some
expansions but it's still oddly displayed.
Label: 'Root' uuid: d71404d4-468e-47d5-8f06-3b65fa7776aa
Total devices 2 FS bytes used 5.81GiB
devid 3 size 10.00GiB used 6.78GiB path /dev/sdd6
devid 4 size 10.00GiB used 6.78GiB path
/dev/disk/by-uuid/d71404d4-468e-47d5-8f06-3b65fa7776aa
cartman {~} root# ls -al
/dev/disk/by-uuid/d71404d4-468e-47d5-8f06-3b65fa7776aa
lrwxrwxrwx 1 root root 10 Sep 16 16:05
/dev/disk/by-uuid/d71404d4-468e-47d5-8f06-3b65fa7776aa -> ../../sdd6
cartman {~} root# blkid /dev/sdd6
/dev/sdd6: LABEL="Root" UUID="d71404d4-468e-47d5-8f06-3b65fa7776aa"
UUID_SUB="4ab62e9d-e1dc-4cea-92da-b2640fa841d0" TYPE="btrfs"
cartman {~} root# blkid /dev/sdi6
/dev/sdi6: LABEL="Root" UUID="d71404d4-468e-47d5-8f06-3b65fa7776aa"
UUID_SUB="bf76e31c-a49c-4497-83fb-5cb6567b5ad3" TYPE="btrfs"
(dev 4 is really /dev/sdi6)
This was originally a natively created btrfs via mkfs
On 09/13/2014 02:27 AM, Anand Jain wrote:
>
>
> Hi Mark,
>
>> Label: 'Root' uuid: d71404d4-468e-47d5-8f06-3b65fa7776aa
>> Total devices 2 FS bytes used 7.46GiB
>> devid 1 size 9.31GiB used 8.06GiB path /dev/sdh6
>> devid 3 size 9.31GiB used 8.06GiB path
>> /dev/disk/by-uuid/d71404d4-468e-47d5-8f06-3b65fa7776aa
>
> I hope this taken when Root is mounted, (just for confirmation),
> which means those are read from the btrfs kernel. Not by scanning
> the udev.
>
>> # ls -al /dev/disk/by-uuid/d71404d4-468e-47d5-8f06-3b65fa7776aa
>> lrwxrwxrwx 1 root root 10 Sep 11 10:43
>> /dev/disk/by-uuid/d71404d4-468e-47d5-8f06-3b65fa7776aa -> ../../sdh6
>
>
> when we read /dev/sdh6 it was devid 1.
> When we read /dev/disk/by-uuid/d71404d4-468e-47d5-8f06-3b65fa7776aa
> it was devid 3.
>
> But udev also says
> /dev/disk/by-uuid/d71404d4-468e-47d5-8f06-3b65fa7776aa
> is nothing but a soft link to /dev/sdh6 !!
>
> Very strange ! Can you run blkid and show its output ?
>
> Also by any chance did we do a disk to disk copy ?
>
>> devid 3 should really be showing /dev/sde6
>
> A reboot or btrfs kernel module reload might update the stale
> and tell the facts.
>
>
> Thanks, Anand
prev parent reply other threads:[~2014-09-17 4:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-11 14:45 btrfs listing is wrong Mark Murawski
2014-09-11 18:11 ` Duncan
2014-09-13 6:27 ` Anand Jain
2014-09-17 4:22 ` Mark Murawski [this message]
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