[Gluster-users] Volume creation fails with "prefix of it is already part of a volume"

Tue Aug 27 09:09:58 UTC 2013

Hi Anand,

See output below. gluster-node4 is where I execute the create volume command.

On gluster-node1:
> getfattr -d -e hex -m . /mnt
getfattr: Removing leading '/' from absolute path names
# file: mnt
security.selinux=0x73797374656d5f753a6f626a6563745f723a6d6e745f743a733000

> getfattr -d -e hex -m . /mnt/brick1
> getfattr -d -e hex -m . /mnt/brick1/vol_icclab
> getfattr -d -e hex -m . /mnt/brick2
> getfattr -d -e hex -m . /mnt/brick2/vol_icclab

On gluster-node4:
> getfattr -d -e hex -m . /mnt
getfattr: Removing leading '/' from absolute path names
# file: mnt
security.selinux=0x73797374656d5f753a6f626a6563745f723a6d6e745f743a733000

> getfattr -d -e hex -m . /mnt/brick1
> getfattr -d -e hex -m . /mnt/brick1/vol_icclab/
getfattr: Removing leading '/' from absolute path names
# file: mnt/brick1/vol_icclab/
trusted.glusterfs.volume-id=0xa2b943d2271a464da2ae7e29ede15552

> getfattr -d -e hex -m . /mnt/brick2
> getfattr -d -e hex -m . /mnt/brick2/vol_icclab/
getfattr: Removing leading '/' from absolute path names
# file: mnt/brick2/vol_icclab/
trusted.glusterfs.volume-id=0xa2b943d2271a464da2ae7e29ede15552

Cheers,
--
Daniele Stroppa
Researcher
Institute of Information Technology
Zürich University of Applied Sciences
http://www.cloudcomp.ch<http://www.cloudcomp.ch/>

From: Anand Avati <anand.avati at gmail.com<mailto:anand.avati at gmail.com>>
Date: Fri, 23 Aug 2013 11:02:20 -0700
To: Daniele Stroppa <strp at zhaw.ch<mailto:strp at zhaw.ch>>
Cc: Vijay Bellur <vbellur at redhat.com<mailto:vbellur at redhat.com>>, "gluster-users at gluster.org<mailto:gluster-users at gluster.org>" <gluster-users at gluster.org<mailto:gluster-users at gluster.org>>
Subject: Re: [Gluster-users] Volume creation fails with "prefix of it is already part of a volume"

Please provide the output of the following commands on the respective nodes:

on gluster-node1 and gluster-node4:

getfattr -d -e hex -m . /mnt
getfattr -d -e hex -m . /mnt/brick1
getfattr -d -e hex -m . /mnt/brick1/vol_icclab
getfattr -d -e hex -m . /mnt/brick2
getfattr -d -e hex -m . /mnt/brick2/vol_icclab

Thanks,
Avati

On Wed, Aug 21, 2013 at 11:59 PM, Stroppa Daniele (strp) <strp at zhaw.ch<mailto:strp at zhaw.ch>> wrote:
Hi Vijay,

I did saw the link you posted, but as mentioned earlier I get this error
when creating the volume for the first time, not when I try to remove and
then re-add a brick to a volume.

Thanks,
--
Daniele Stroppa
Researcher
Institute of Information Technology
Zürich University of Applied Sciences
http://www.cloudcomp.ch <http://www.cloudcomp.ch/>

On 22/08/2013 08:19, "Vijay Bellur" <vbellur at redhat.com<mailto:vbellur at redhat.com>> wrote:

>On 08/21/2013 08:21 PM, Stroppa Daniele (strp) wrote:
>> Thanks Daniel.
>>
>> I'm indeed running Gluster 3.4 on CentOS 6.4.
>>
>> I've tried your suggestion, it does work for me too, but it's not an
>> optimal solution.
>>
>> Maybe someone could shed some light on this behaviour?
>
>This might be of help in understanding the behavior:
>
>http://joejulian.name/blog/glusterfs-path-or-a-prefix-of-it-is-already-par
>t-of-a-volume/
>
>Please do let us know if you need more clarity on this.
>
>-Vijay
>>
>> Thanks,
>> --
>> Daniele Stroppa
>> Researcher
>> Institute of Information Technology
>> Zürich University of Applied Sciences
>> http://www.cloudcomp.ch <http://www.cloudcomp.ch/>
>>
>>
>>
>>
>>
>>
>>
>> On 21/08/2013 09:00, "Daniel Müller" <mueller at tropenklinik.de<mailto:mueller at tropenklinik.de>> wrote:
>>
>>> Are you running with gluster 3.4?
>>> I had the same issue. I solved it by deleting my subfolders again and
>>>then
>>> create new ones. In your case brick1 and brick2.
>>> Then create new subfolders in the place,ex.: mkdir /mnt/bricknew1  and
>>> /mnt/bricknew2 .
>>> This solved the problem for me, not knowing why gluster 3.4 behave like
>>> this.
>>> Good Luck
>>>
>>>
>>> EDV Daniel Müller
>>>
>>> Leitung EDV
>>> Tropenklinik Paul-Lechler-Krankenhaus
>>> Paul-Lechler-Str. 24
>>> 72076 Tübingen
>>> Tel.: 07071/206-463, Fax: 07071/206-499
>>> eMail: mueller at tropenklinik.de<mailto:mueller at tropenklinik.de>
>>> Internet: www.tropenklinik.de<http://www.tropenklinik.de>
>>>
>>> Von: gluster-users-bounces at gluster.org<mailto:gluster-users-bounces at gluster.org>
>>> [mailto:gluster-users-bounces at gluster.org<mailto:gluster-users-bounces at gluster.org>] Im Auftrag von Stroppa
>>>Daniele
>>> (strp)
>>> Gesendet: Dienstag, 20. August 2013 21:51
>>> An: gluster-users at gluster.org<mailto:gluster-users at gluster.org>
>>> Betreff: [Gluster-users] Volume creation fails with "prefix of it is
>>> already
>>> part of a volume"
>>>
>>> Hi All,
>>>
>>> I'm setting up a small test cluster: 2 nodes (gluster-node1 and
>>> gluster-node4) with 2 bricks each (/mnt/brick1 and /mnt/brick2) and one
>>> volume (vol_icclab). When I issue the create volume command I get the
>>> following error:
>>>
>>> # gluster volume create vol_icclab replica 2 transport tcp
>>> gluster-node4.test:/mnt/brick1/vol_icclab
>>> gluster-node1.test:/mnt/brick1/vol_icclab
>>> gluster-node4.test:/mnt/brick2/vol_icclab
>>> gluster-node1.test:/mnt/brick2/vol_icclab
>>> volume create: vol_icclab: failed: /mnt/brick1/vol_icclab or a prefix
>>>of
>>> it
>>> is already part of a volume
>>>
>>> I checked and found this [1], but in my case the issue it's happening
>>>when
>>> creating the volume for the first time, not after removing/adding a
>>>brick
>>> to
>>> a volume.
>>>
>>> Any suggestions?
>>>
>>> [1]
>>>
>>>http://joejulian.name/blog/glusterfs-path-or-a-prefix-of-it-is-already-p
>>> art-of-a-volume/
>>>
>>> Thanks,
>>> --
>>> Daniele Stroppa
>>> Researcher
>>> Institute of Information Technology
>>> Zürich University of Applied Sciences
>>> http://www.cloudcomp.ch
>>>
>>>
>>
>> _______________________________________________
>> Gluster-users mailing list
>> Gluster-users at gluster.org<mailto:Gluster-users at gluster.org>
>> http://supercolony.gluster.org/mailman/listinfo/gluster-users
>>
>

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