[linux-lvm] pvmove --abort does nothing

[linux-lvm] pvmove --abort does nothing

[Christian Völker]

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Yohoo!

Regarding to another thread (pvmove and 100% IO Wait) I had to reboot my
server during a pvmove.

Now I have a pvmove0 LV which seems to be locked.
A "pvmove"  does nothing.
Same for "pvmove --abort".
Nothing happens- I can't remove the pvmove0 LV neither continue with the
pvmove operation!

How can I get out of here?

Thanks!

Christian
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Re: [linux-lvm] pvmove --abort does nothing

[Jonathan Brassow]

Might be interesting to know what dmsetup says...

prompt> dmsetup status
and
prompt> dmsetup table

  brassow

On Nov 13, 2008, at 3:30 AM, Christian V�lker wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Yohoo!
>
> Regarding to another thread (pvmove and 100% IO Wait) I had to  
> reboot my
> server during a pvmove.
>
> Now I have a pvmove0 LV which seems to be locked.
> A "pvmove"  does nothing.
> Same for "pvmove --abort".
> Nothing happens- I can't remove the pvmove0 LV neither continue with  
> the
> pvmove operation!
>
> How can I get out of here?
>
> Thanks!
>
> Christian
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> 5pT48VLTB2t93MJdiMfA8Xo=
> =sN2X
> -----END PGP SIGNATURE-----
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] pvmove --abort does nothing

[Christian Völker]

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Yohoo!
> prompt> dmsetup status
> and
> prompt> dmsetup table
Both report several line for each LV, but empty for the pvmove0:

"vg1-pvmove0:"

Nothing more. Do you need the lines from the other LVs?

Thanks for trying to help!

Christian

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Re: [linux-lvm] pvmove --abort does nothing

[Jonathan Brassow]

couldn't hurt to post all of the LVs starting with 'vg1' (table and  
status).

Also, the latest backup for vg1 out of /etc/lvm might be nice too.

  brassow

On Nov 13, 2008, at 4:29 AM, Christian V�lker wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Yohoo!
>> prompt> dmsetup status
>> and
>> prompt> dmsetup table
> Both report several line for each LV, but empty for the pvmove0:
>
> "vg1-pvmove0:"
>
> Nothing more. Do you need the lines from the other LVs?
>
> Thanks for trying to help!
>
> Christian
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.7 (GNU/Linux)
> Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org
>
> iD8DBQFJHAGf0XNIYlAXmzsRAuGLAJ9gA3Xc0DIZybrO6f0OQagfrUzOvQCgtBID
> 5DQIHKtzPj2Bp6lfWAH5tAI=
> =Ma56
> -----END PGP SIGNATURE-----
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] pvmove --abort does nothing

[Christian Völker]

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> couldn't hurt to post all of the LVs starting with 'vg1' (table and
> status).
Here we are:
[root@nas ~]# dmsetup status| grep vg1
vg1-musik: 0 367001600 linear
vg1-backup: 0 747700224 linear
vg1-backup: 747700224 180486144 linear
vg1-backup: 928186368 178520064 linear
vg1-backup: 1106706432 125829120 linear
vg1-minidv: 0 364183552 linear
vg1-minidv: 364183552 193134592 linear
vg1-minidv: 557318144 147718144 linear
vg1-minidv: 705036288 101711872 linear
vg1-minidv: 806748160 32112640 linear
vg1-minidv: 838860800 209715200 linear
vg1-minidv: 1048576000 150994944 linear
vg1-esx: 0 125829120 striped
vg1-ftp: 0 209715200 linear
vg1-backuppc: 0 419430400 linear
vg1-video: 0 2147483648 linear
vg1-video: 2147483648 38862848 linear
vg1-video: 2186346496 157286400 linear
vg1-bilder: 0 157286400 linear
vg1-pvmove0:
[root@nas ~]# dmsetup table | grep vg1
vg1-musik: 0 367001600 linear 8:33 41484672
vg1-backup: 0 747700224 linear 8:17 384
vg1-backup: 747700224 180486144 linear 8:97 220201344
vg1-backup: 928186368 178520064 linear 8:49 384
vg1-backup: 1106706432 125829120 linear 8:97 400687488
vg1-minidv: 0 364183552 linear 8:33 1100546432
vg1-minidv: 364183552 193134592 linear 8:49 178520448
vg1-minidv: 557318144 147718144 linear 8:81 691143040
vg1-minidv: 705036288 101711872 linear 8:81 589431168
vg1-minidv: 806748160 32112640 linear 8:81 557318528
vg1-minidv: 838860800 209715200 linear 8:81 2176254336
vg1-minidv: 1048576000 150994944 linear 8:81 2543255936
vg1-esx: 0 125829120 striped 2 512 8:97 157286784 8:33 1037631872
vg1-ftp: 0 209715200 linear 8:33 408486272
vg1-backuppc: 0 419430400 linear 8:33 618201472
vg1-video: 0 2147483648 linear 8:65 384
vg1-video: 2147483648 38862848 linear 8:65 2304770432
vg1-video: 2186346496 157286400 linear 8:65 2147484032
vg1-bilder: 0 157286400 linear 8:97 384
vg1-pvmove0:
[root@nas ~]#

> Also, the latest backup for vg1 out of /etc/lvm might be nice too.
Which one do you mean? The one before the initial pvmove? Or really the
latest one after I tried several steps like "lvs -a", "vgck" or "pvmove
- --abort"?

BTW: All LVs seems to work fine except that there is the pvmove0 LV
available which I can't get rid of it.
Even a pvmove from this PV works fine!
lvs -a shows:
[root@nas archive]# lvs -a
  Number of segments in active LV pvmove0 does not match metadata
  Number of segments in active LV pvmove0 does not match metadata
  LV        VG   Attr   LSize   Origin Snap%  Move Log Copy%  Convert
  backup    vg1  -wi-a- 587.72G
  backuppc  vg1  -wi-ao 200.00G
  bilder    vg1  -wi-a-  75.00G
  esx       vg1  -wi-ao  60.00G
  ftp       vg1  -wi-a- 100.00G
  minidv    vg1  -wi-a- 572.00G
  musik     vg1  -wi-a- 175.00G
  [pvmove0] vg1  p-C-d-      0
  video     vg1  -wi-a-   1.09T
  raid1     vg2  -wi-a- 120.00G
[root@nas archive]#

Thanks!



Greetings

Christian
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Re: [linux-lvm] pvmove --abort does nothing

[Christian Völker]

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Hash: SHA1

Yohoo!

Ingoring the existing pvmove0 LV i tried to pvmove the remaining PEs
away. Suddenly I got the following error and the pvmove aborted gracefully.

What is happening here?
Should I try to create a new VG?

/dev/sdf1: Moved: 74.5%
  /dev/sda5: Checksum error
  /dev/sdb1: Checksum error
  /dev/sdc1: Checksum error
  /dev/sdd1: Checksum error
  /dev/sde1: Checksum error
  /dev/sdf1: Checksum error
  /dev/sdg1: Checksum error
  /dev/sda5: Checksum error
  Couldn't read volume group metadata.
  /dev/sdb1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdc1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdd1: Checksum error
  Couldn't read volume group metadata.
  /dev/sde1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdf1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdg1: Checksum error
  Couldn't read volume group metadata.
  Volume group for uuid not found:
CJm32iLS51x5Had2WODRuk1FMODIuU1DsUbvsOrL7RapA

sTiXHi63CLXidYfYluP
  Unable to reactivate logical volume "pvmove1"
  /dev/sda5: Checksum error
  /dev/sdb1: Checksum error
  /dev/sdc1: Checksum error
  /dev/sdd1: Checksum error
  /dev/sde1: Checksum error
  /dev/sdf1: Checksum error
  /dev/sdg1: Checksum error
  /dev/sda5: Checksum error
  Couldn't read volume group metadata.
  /dev/sdb1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdc1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdd1: Checksum error
  Couldn't read volume group metadata.
  /dev/sde1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdf1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdg1: Checksum error
  Couldn't read volume group metadata.
  Volume group for uuid not found:
CJm32iLS51x5Had2WODRuk1FMODIuU1DZOGY8X7HYx1u6

IPJJjpM6K0vnrV5ZwVy
  ABORTING: Segment progression failed.
  /dev/sda5: Checksum error
  /dev/sdb1: Checksum error
  /dev/sdc1: Checksum error
  /dev/sdd1: Checksum error
  /dev/sde1: Checksum error
  /dev/sdf1: Checksum error
  /dev/sdg1: Checksum error
  /dev/sda5: Checksum error
  Couldn't read volume group metadata.
  /dev/sdb1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdc1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdd1: Checksum error
  Couldn't read volume group metadata.
  /dev/sde1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdf1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdg1: Checksum error
  Couldn't read volume group metadata.
  Volume group for uuid not found:
CJm32iLS51x5Had2WODRuk1FMODIuU1DZOGY8X7HYx1u6IPJJjpM6K0vnrV5ZwVy
  Failed to suspend minidv
  Locking LVs to remove temporary mirror failed
  /dev/sda5: Checksum error
  /dev/sdb1: Checksum error
  /dev/sdc1: Checksum error
  /dev/sdd1: Checksum error
  /dev/sde1: Checksum error
  /dev/sdf1: Checksum error
  /dev/sdg1: Checksum error
  /dev/sda5: Checksum error
  Couldn't read volume group metadata.
  /dev/sdb1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdc1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdd1: Checksum error
  Couldn't read volume group metadata.
  /dev/sde1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdf1: Checksum error
  Couldn't read volume group metadata.
  /dev/sdg1: Checksum error
  Couldn't read volume group metadata.
  Volume group for uuid not found:
CJm32iLS51x5Had2WODRuk1FMODIuU1DsUbvsOrL7RapAsTiXHi63CLXidYfYluP
  Suspension of temporary mirror LV failed
  Volume group vg1 metadata is inconsistent
  Volume group for uuid not found:
CJm32iLS51x5Had2WODRuk1FMODIuU1DsUbvsOrL7RapAsTiXHi63CLXidYfYluP
  ABORTING: Unable to deactivate temporary logical volume "pvmove1"

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Re: [linux-lvm] pvmove --abort does nothing

[Christian Völker]

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Hi,

meanhwhile I did a "vgsplit" and the pvmove0 LV went together with one
LV to the new VG while the old VG seems to be ok now.

Looks like it is attached to this particular LV. Unfortunately, this is
the largest LV and it would be hard to move the data over...

Any further ideas?


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[linux-lvm] Moving Xen LV to image and mounting the image.

[Chris Edwards]

Hello All!

I have been trying to solve a problem.  In my current scenario I created on our SAN multiple volume groups with a single logical volume on each taking the entire groups space.  I realized that I made a mistake and did not leave room for doing snapshots.  Now I am moving each of the LV's to a new single large logical group and leaving space for snap shots.  So then I realized that I could do a "dd" to an image file (example: "dd if=/dev/VolGroup00/LogVol00 of=/root/wdcdns1.img").  I was wondering if there was a way to mount this image file?  I can't seem to mount it no matter what I do.  Am I doing this correctly?

Thanks for any help!

---

Chris Edwards

Re: [linux-lvm] Moving Xen LV to image and mounting the image.

[Jonathan Brassow]

Looks like you are doing it correctly, but you would have to mount the  
copied image via loopback, because it is a file now and not a device.

  brassow

On Nov 14, 2008, at 8:53 AM, Chris Edwards wrote:

> Hello All!
>
> I have been trying to solve a problem.  In my current scenario I  
> created on our SAN multiple volume groups with a single logical  
> volume on each taking the entire groups space.  I realized that I  
> made a mistake and did not leave room for doing snapshots.  Now I am  
> moving each of the LV's to a new single large logical group and  
> leaving space for snap shots.  So then I realized that I could do a  
> "dd" to an image file (example: "dd if=/dev/VolGroup00/LogVol00 of=/ 
> root/wdcdns1.img").  I was wondering if there was a way to mount  
> this image file?  I can't seem to mount it no matter what I do.  Am  
> I doing this correctly?
>
> Thanks for any help!
>
> ---
>
> Chris Edwards
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] Moving Xen LV to image and mounting the image.

[Greg Freemyer]

On Fri, Nov 14, 2008 at 9:53 AM, Chris Edwards
<cedwards@smartechcorp.net> wrote:
> Hello All!
>
> I have been trying to solve a problem.  In my current scenario I created on our SAN multiple volume groups with a single logical volume on each taking the entire groups space.  I realized that I made a mistake and did not leave room for doing snapshots.  Now I am moving each of the LV's to a new single large logical group and leaving space for snap shots.  So then I realized that I could do a "dd" to an image file (example: "dd if=/dev/VolGroup00/LogVol00 of=/root/wdcdns1.img").  I was wondering if there was a way to mount this image file?  I can't seem to mount it no matter what I do.  Am I doing this correctly?
>

Chris,

I don't remember the details exactly, but I've done this before.

You tried mounting it loopback, right?

ie.  mount -t xfs -o loop,ro,noatime,nodev,nofsck somesystem.img /image

If that fails, it may be because you imaged it with it mounted.  If
so, you will may need to apply any outstanding journal entries to get
it to mount.

Greg
-- 
Greg Freemyer
Litigation Triage Solutions Specialist
http://www.linkedin.com/in/gregfreemyer
First 99 Days Litigation White Paper -
http://www.norcrossgroup.com/forms/whitepapers/99%20Days%20whitepaper.pdf

The Norcross Group
The Intersection of Evidence & Technology
http://www.norcrossgroup.com

RE: [linux-lvm] Moving Xen LV to image and mounting the image.

[Chris Edwards]

Here are some things I have tried with no luck...

losetup /dev/loop5 ~/wdcdns1.img
sfdisk -l /dev/loop5

Disk /dev/loop5: 606 cylinders, 255 heads, 63 sectors/track

sfdisk: ERROR: sector 0 does not have an msdos signature
 /dev/loop5: unrecognized partition table type
No partitions found
---
mount -o loop wdcdns1.img /mnt/tmp/

mount: you must specify the filesystem type
---
mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/wdcdns1.img /mnt/tmp/

mount: unknown filesystem type 'xfs'
---

Thanks for your input!

---
Chris Edwards


-----Original Message-----
From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com] On Behalf Of Greg Freemyer
Sent: Friday, November 14, 2008 10:36 AM
To: LVM general discussion and development
Subject: Re: [linux-lvm] Moving Xen LV to image and mounting the image.

On Fri, Nov 14, 2008 at 9:53 AM, Chris Edwards
<cedwards@smartechcorp.net> wrote:
> Hello All!
>
> I have been trying to solve a problem.  In my current scenario I created on our SAN multiple volume groups with a single logical volume on each taking the entire groups space.  I realized that I made a mistake and did not leave room for doing snapshots.  Now I am moving each of the LV's to a new single large logical group and leaving space for snap shots.  So then I realized that I could do a "dd" to an image file (example: "dd if=/dev/VolGroup00/LogVol00 of=/root/wdcdns1.img").  I was wondering if there was a way to mount this image file?  I can't seem to mount it no matter what I do.  Am I doing this correctly?
>

Chris,

I don't remember the details exactly, but I've done this before.

You tried mounting it loopback, right?

ie.  mount -t xfs -o loop,ro,noatime,nodev,nofsck somesystem.img /image

If that fails, it may be because you imaged it with it mounted.  If
so, you will may need to apply any outstanding journal entries to get
it to mount.

Greg
-- 
Greg Freemyer
Litigation Triage Solutions Specialist
http://www.linkedin.com/in/gregfreemyer
First 99 Days Litigation White Paper -
http://www.norcrossgroup.com/forms/whitepapers/99%20Days%20whitepaper.pdf

The Norcross Group
The Intersection of Evidence & Technology
http://www.norcrossgroup.com

_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] Moving Xen LV to image and mounting the image.

[Jonathan Brassow]

On Nov 14, 2008, at 9:44 AM, Chris Edwards wrote:

> Here are some things I have tried with no luck...
>
> losetup /dev/loop5 ~/wdcdns1.img
> sfdisk -l /dev/loop5
>
> Disk /dev/loop5: 606 cylinders, 255 heads, 63 sectors/track
>
> sfdisk: ERROR: sector 0 does not have an msdos signature
> /dev/loop5: unrecognized partition table type

Why run sfdisk?

> mount -o loop wdcdns1.img /mnt/tmp/

Why are you using '-o loop'.  You already have the loop device setup.   
Couldn't you just:
prompt> mount /dev/loop5 /mnt/tmp
... or, if you didn't create the loop device already
prompt> mount -o loop /root/wdcdns1.img /mnt/tmp

> mount: you must specify the filesystem type
> ---
> mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/wdcdns1.img /mnt/tmp/
>
> mount: unknown filesystem type 'xfs'

Is the xfs module loaded?  (do you have xfs support?)

  brassow

RE: [linux-lvm] Moving Xen LV to image and mounting the image.

[Chris Edwards]

>> sfdisk: ERROR: sector 0 does not have an msdos signature
>> /dev/loop5: unrecognized partition table type

>Why run sfdisk?

Just trying to see the partitions incase I have to mount with an offset.

>> mount -o loop wdcdns1.img /mnt/tmp/

>Why are you using '-o loop'.  You already have the loop device setup.   
>Couldn't you just:
>prompt> mount /dev/loop5 /mnt/tmp
>... or, if you didn't create the loop device already
>prompt> mount -o loop /root/wdcdns1.img /mnt/tmp

>> mount: you must specify the filesystem type
>> ---
>> mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/wdcdns1.img /mnt/tmp/
>>
>> mount: unknown filesystem type 'xfs'

>Is the xfs module loaded?  (do you have xfs support?)

I installed the xfs module with yum and then deleted all the loopback devices with losetup -d and started over again...

[root@wdcxen1 ~]# losetup -a
[root@wdcxen1 ~]# losetup /dev/loop0 /root/wdcdns1.img
[root@wdcxen1 ~]# losetup -a
/dev/loop0: [0807]:14876937 (/root/wdcdns1.img)
[root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/wdcdns1.img /mnt/tmp/
mount: wrong fs type, bad option, bad superblock on /dev/loop1,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

I really appreciate everyones help, this has been stumping me for a week or so.

Thanks!

Chris Edwards

Re: [linux-lvm] Moving Xen LV to image and mounting the image.

[Greg Freemyer]

On Fri, Nov 14, 2008 at 11:02 AM, Chris Edwards
<cedwards@smartechcorp.net> wrote:
>>> sfdisk: ERROR: sector 0 does not have an msdos signature
>>> /dev/loop5: unrecognized partition table type
>
>>Why run sfdisk?
>
> Just trying to see the partitions incase I have to mount with an offset.
>
>>> mount -o loop wdcdns1.img /mnt/tmp/
>
>>Why are you using '-o loop'.  You already have the loop device setup.
>>Couldn't you just:
>>prompt> mount /dev/loop5 /mnt/tmp
>>... or, if you didn't create the loop device already
>>prompt> mount -o loop /root/wdcdns1.img /mnt/tmp
>
>>> mount: you must specify the filesystem type
>>> ---
>>> mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/wdcdns1.img /mnt/tmp/
>>>
>>> mount: unknown filesystem type 'xfs'
>
>>Is the xfs module loaded?  (do you have xfs support?)
>
> I installed the xfs module with yum and then deleted all the loopback devices with losetup -d and started over again...
>
> [root@wdcxen1 ~]# losetup -a
> [root@wdcxen1 ~]# losetup /dev/loop0 /root/wdcdns1.img
> [root@wdcxen1 ~]# losetup -a
> /dev/loop0: [0807]:14876937 (/root/wdcdns1.img)
> [root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/wdcdns1.img /mnt/tmp/
> mount: wrong fs type, bad option, bad superblock on /dev/loop1,
>       missing codepage or other error
>       In some cases useful info is found in syslog - try
>       dmesg | tail  or so
>
> I really appreciate everyones help, this has been stumping me for a week or so.
>
I'm not on a linux box currently, but won't "file /root/wdcdns1.img"
tell you what your working with.

Greg
-- 
Greg Freemyer
Litigation Triage Solutions Specialist
http://www.linkedin.com/in/gregfreemyer
First 99 Days Litigation White Paper -
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The Norcross Group
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RE: [linux-lvm] Moving Xen LV to image and mounting the image.

[Chris Edwards]

> >
> I'm not on a linux box currently, but won't "file /root/wdcdns1.img"
> tell you what your working with.
> 
[root@wdcxen1 ~]# file wdcdns1.img
wdcdns1.img: data

---
Chris Edwards

Re: [linux-lvm] Moving Xen LV to image and mounting the image.

[Jonathan Brassow]

On Nov 14, 2008, at 10:02 AM, Chris Edwards wrote:

>  installed the xfs module with yum and then deleted all the loopback  
> devices with losetup -d and started over again...
>
> [root@wdcxen1 ~]# losetup -a
> [root@wdcxen1 ~]# losetup /dev/loop0 /root/wdcdns1.img
> [root@wdcxen1 ~]# losetup -a
> /dev/loop0: [0807]:14876937 (/root/wdcdns1.img)
> [root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/ 
> wdcdns1.img /mnt/tmp/

Stop doing that!  :)  When you run 'mount' with '-o loop' it sets up  
the loop device for you.  There is no reason to create the loop device  
ahead of time.

> mount: wrong fs type, bad option, bad superblock on /dev/loop1,
>       missing codepage or other error
>       In some cases useful info is found in syslog - try
>       dmesg | tail  or so

Did you try checking syslog?

Also, if you are trying to mount the original device and the loop back  
device at the same time, xfs will complain about conflicting UUIDs.   
If that's what syslog says is going on, and you really want to mount  
the same file system (one from the original device and one from the  
loopback), then you will need to use the mount option 'nouuid'.

  brassow

RE: [linux-lvm] Moving Xen LV to image and mounting the image.

[Chris Edwards]

Ok, forgive me I am fairly new to LV's, it was part of the RHCE test but I have never really had to use them until I started using a SAN and Xen.

No more losetup! 

[root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/wdcdns1.img /mnt/tmp/
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so


tail /var/log/messages

Nov 14 10:44:50 wdcxen1 kernel: XFS: unknown mount option [nofsck].

[root@wdcxen1 ~]# modprobe -l | grep xfs
/lib/modules/2.6.18-92.1.13.el5xen/kernel/fs/freevxfs/freevxfs.ko
/lib/modules/2.6.18-92.1.13.el5xen/extra/xfs/xfs.ko

---

Chris Edwards


> -----Original Message-----
> From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-
> bounces@redhat.com] On Behalf Of Jonathan Brassow
> Sent: Friday, November 14, 2008 11:37 AM
> To: LVM general discussion and development
> Subject: Re: [linux-lvm] Moving Xen LV to image and mounting the image.
> 
> 
> On Nov 14, 2008, at 10:02 AM, Chris Edwards wrote:
> 
> >  installed the xfs module with yum and then deleted all the loopback
> > devices with losetup -d and started over again...
> >
> > [root@wdcxen1 ~]# losetup -a
> > [root@wdcxen1 ~]# losetup /dev/loop0 /root/wdcdns1.img
> > [root@wdcxen1 ~]# losetup -a
> > /dev/loop0: [0807]:14876937 (/root/wdcdns1.img)
> > [root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/
> > wdcdns1.img /mnt/tmp/
> 
> Stop doing that!  :)  When you run 'mount' with '-o loop' it sets up
> the loop device for you.  There is no reason to create the loop device
> ahead of time.
> 
> > mount: wrong fs type, bad option, bad superblock on /dev/loop1,
> >       missing codepage or other error
> >       In some cases useful info is found in syslog - try
> >       dmesg | tail  or so
> 
> Did you try checking syslog?
> 
> Also, if you are trying to mount the original device and the loop back
> device at the same time, xfs will complain about conflicting UUIDs.
> If that's what syslog says is going on, and you really want to mount
> the same file system (one from the original device and one from the
> loopback), then you will need to use the mount option 'nouuid'.
> 
>   brassow
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] Moving Xen LV to image and mounting the image.

[Jonathan Brassow]

You can take out the 'nofsck' mount option then.

[root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev ~/wdcdns1.img / 
mnt/tmp/

  brassow

On Nov 14, 2008, at 10:52 AM, Chris Edwards wrote:

> root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/ 
> wdcdns1.img /mnt/tmp/
> mount: wrong fs type, bad option, bad superblock on /dev/loop0,
>       missing codepage or other error
>       In some cases useful info is found in syslog - try
>       dmesg | tail  or so
>
>
> tail /var/log/messages
>
> Nov 14 10:44:50 wdcxen1 kernel: XFS: unknown mount option [nofsck].

RE: [linux-lvm] Moving Xen LV to image and mounting the image.

[Chris Edwards]

[root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev ~/wdcdns1.img /mnt/tmp/ mount: wrong fs type, bad option, bad superblock on /dev/loop0,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

Still no luck, I am wondering if I made this image file correctly.

---

Chris Edwards
Smartech Corp.
Div. of AirNet Group
http://www.airnetgroup.com
http://www.smartechcorp.net
cedwards@smartechcorp.net
P:  423-664-7678 x114
C:  423-593-6964
F:  423-664-7680


> -----Original Message-----
> From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-
> bounces@redhat.com] On Behalf Of Jonathan Brassow
> Sent: Friday, November 14, 2008 12:26 PM
> To: LVM general discussion and development
> Subject: Re: [linux-lvm] Moving Xen LV to image and mounting the image.
> 
> You can take out the 'nofsck' mount option then.
> 
> [root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev ~/wdcdns1.img /
> mnt/tmp/
> 
>   brassow
> 
> On Nov 14, 2008, at 10:52 AM, Chris Edwards wrote:
> 
> > root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/
> > wdcdns1.img /mnt/tmp/
> > mount: wrong fs type, bad option, bad superblock on /dev/loop0,
> >       missing codepage or other error
> >       In some cases useful info is found in syslog - try
> >       dmesg | tail  or so
> >
> >
> > tail /var/log/messages
> >
> > Nov 14 10:44:50 wdcxen1 kernel: XFS: unknown mount option [nofsck].
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] Moving Xen LV to image and mounting the image.

[Jonathan Brassow]

On Nov 14, 2008, at 12:35 PM, Chris Edwards wrote:

> [root@wdcxen1 ~]# mount -t xfs -o loop,ro,noatime,nodev ~/ 
> wdcdns1.img /mnt/tmp/ mount: wrong fs type, bad option, bad  
> superblock on /dev/loop0,
>       missing codepage or other error
>       In some cases useful info is found in syslog - try
>       dmesg | tail  or so
>
> Still no luck, I am wondering if I made this image file correctly.

The error message tells us to look at the system log (/var/log/ 
messages), so let's do that.

  brassow

RE: [linux-lvm] Moving Xen LV to image and mounting the image.

[Stuart D. Gathman]

On Fri, 14 Nov 2008, Chris Edwards wrote:

> mount -o loop wdcdns1.img /mnt/tmp/
> 
> mount: you must specify the filesystem type
> ---
> mount -t xfs -o loop,ro,noatime,nodev,nofsck ~/wdcdns1.img /mnt/tmp/
> 
> mount: unknown filesystem type 'xfs'

If the filesystem is indeed xfs, then you are missing the xfs module
in your kernel.  On Centos, it is in extras and must be installed
separately.

-- 
	      Stuart D. Gathman <stuart@bmsi.com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.

Re: [linux-lvm] pvmove --abort does nothing

[Jonathan Brassow]

I would look at the LVM metadata found in /etc/lvm/backup, or /etc/lvm/ 
archive to find out more about the pvmove volume.  You can of course  
edit the metadata by hand to achieve the result you want.  Why the  
initial problem occurred, I don't know... and it may be too late to  
know.  :(

  brassow

On Nov 14, 2008, at 2:21 AM, Christian V�lker wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hi,
>
> meanhwhile I did a "vgsplit" and the pvmove0 LV went together with one
> LV to the new VG while the old VG seems to be ok now.
>
> Looks like it is attached to this particular LV. Unfortunately, this  
> is
> the largest LV and it would be hard to move the data over...
>
> Any further ideas?
>
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.7 (GNU/Linux)
> Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org
>
> iD8DBQFJHTTz0XNIYlAXmzsRAqAPAJ9GZh5sto3GAg4qqmkEPVipA8TLUQCeODdZ
> HvE8ErHDUJtI2MFROONaCt8=
> =NGly
> -----END PGP SIGNATURE-----
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/