From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mx1.redhat.com (ext-mx06.extmail.prod.ext.phx2.redhat.com
	[10.5.110.30])
	by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP
	id tAOJeS6d024548
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256
	verify=NO)
	for <linux-lvm@redhat.com>; Tue, 24 Nov 2015 14:40:28 -0500
Received: from mail-vk0-f52.google.com (mail-vk0-f52.google.com
	[209.85.213.52])
	by mx1.redhat.com (Postfix) with ESMTPS id D58C7A2C01
	for <linux-lvm@redhat.com>; Tue, 24 Nov 2015 19:40:21 +0000 (UTC)
Received: by vkha189 with SMTP id a189so19352425vkh.2
	for <linux-lvm@redhat.com>; Tue, 24 Nov 2015 11:40:20 -0800 (PST)
MIME-Version: 1.0
In-Reply-To: <CAO_L6qGzCf3QQRO28f7YnZU3gY0q42zz0=G+8bvqCVhUon3W3w@mail.gmail.com>
References: <CAO_L6qEsB6Na7GXeCEHH2yKJwueRqwptYDHwCS3fwEzzM3DTow@mail.gmail.com>
	<CAO_L6qGzCf3QQRO28f7YnZU3gY0q42zz0=G+8bvqCVhUon3W3w@mail.gmail.com>
From: shankha <shankhabanerjee@gmail.com>
Date: Tue, 24 Nov 2015 14:11:46 -0500
Message-ID: <CAO_L6qHqGpzz4oV8SXv7MRD+uBrb5iLNYvDRxz1_OHOk9WeOxw@mail.gmail.com>
Subject: Re: [linux-lvm] Thin dump errors on snapshot of lvm metadata
Reply-To: LVM general discussion and development <linux-lvm@redhat.com>
List-Id: LVM general discussion and development <linux-lvm.redhat.com>
List-Unsubscribe: <https://www.redhat.com/mailman/options/linux-lvm>,
	<mailto:linux-lvm-request@redhat.com?subject=unsubscribe>
List-Archive: <https://www.redhat.com/archives/linux-lvm>
List-Post: <mailto:linux-lvm@redhat.com>
List-Help: <mailto:linux-lvm-request@redhat.com?subject=help>
List-Subscribe: <https://www.redhat.com/mailman/listinfo/linux-lvm>,
	<mailto:linux-lvm-request@redhat.com?subject=subscribe>
List-Id: <linux-lvm.redhat.com>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: linux-lvm@redhat.com

There is small correction in my above email:

> so I assume something is wrong with taking the snap

> dmsetup message /dev/mapper/VG-POOL-tpool 0 release_metadata_snap
I meant :
dmsetup message /dev/mapper/VG-POOL-tpool 0 reserve_metadata_snap



On Tue, Nov 24, 2015 at 1:40 PM, shankha <shankhabanerjee@gmail.com> wrote:
> I tried out the latest version (device-mapper-persistent-data-0.5.5-2)
> of thin dump ().
> I still get the error message :
>
> "metadata contains errors (run thin_check for details).
> perhaps you wanted to run with --repair"
>
> so I assume something is wrong with taking the snap
>
> dmsetup message /dev/mapper/VG-POOL-tpool 0 release_metadata_snap
>
> Thanks
> Thanks
> Shankha Banerjee
>
>
> On Tue, Nov 24, 2015 at 11:03 AM, shankha <shankhabanerjee@gmail.com> wrote:
>> I am trying to run thin dump on the snapshot of lvm thin pool metadata.
>>
>> The commands used to generate the snapshot and take the thin dump output are:
>>
>> dmsetup message /dev/mapper/VG-POOL-tpool 0 reserve_metadata_snap
>> block_no=`dmsetup status /dev/mapper/VG-POOL-tpool | cut -f 7 -d " "`
>>
>> thin_dump -f xml /dev/mapper/VG-POOL_tmeta -m $block_no
>>
>> dmsetup message /dev/mapper/VG-POOL-tpool 0 release_metadata_snap
>>
>> While creating the snapshot I am dumping data to the thin volume.
>>
>> The error message I get is:
>> "metadata contains errors (run thin_check for details).
>> perhaps you wanted to run with --repair"
>>
>> Is there something wrong with the way I am using the commands ?
>>
>> Thanks