pvmove hangs

linux-lvm Gergely Imre 2 participants 3 messages Apr 26, 2005 – Apr 27, 2005

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Gergely Imre

author

2005-04-26 09:20 UTC #0 lore raw

i have a LV with two PVs in it, like this:

--- Logical volume ---

  LV Name                /dev/watchdog/watchdog_var
  VG Name                watchdog
  LV UUID                v6U2JY-PBMf-snpJ-IXX5-ZzcV-y4fk-PchoQg
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                72.22 GB
  Current LE             2311
  Segments               1
  Allocation             next free (default)
  Read ahead sectors     0
  Block device           254:6

--- Physical volumes ---

  PV Name               /dev/sdb2
  PV UUID               5v23aD-mkO0-I9Ur-zUKG-sGd2-8iCP-zhgfJe
  PV Status             allocatable
  Total PE / Free PE    2500 / 189

  PV Name               /dev/sda1
  PV UUID               7mzLEZ-Va0c-sdiW-8KAV-lyjo-a5yI-GBORGS
  PV Status             allocatable
  Total PE / Free PE    2941 / 2753

i want to remove sdb2, so i wanted to make a pvmove /dev/sdb2, so it would move everything to sda1. the strange thing is, pvmove starts, and after, say, 20% (about an hour or so) the whole system hangs somehow. i can ping the box, but any command i try to run, fails. it's like it's waiting for the disk to read/write, or something like that. the distrib is Fedora Core 2.

lvm> version
LVM version: 2.00.15 (2004-04-19)
Library version: 1.00.14-ioctl (2004-04-06)
Driver version: 4.4.0

filesystem is ext3.
the system has 2GB RAM, dual Intel Xeon 3GHz.

i tried with kernel 2.6.11.7, after a while it gives me kernel panic during pvmove. then i tried with 2.6.9, it didn't panic, but it hung, and i had to reboot.

it's kinda urgent, thanks.

Diaz Rodriguez, Eduardo

2005-04-26 13:30 UTC #1 lore raw

Hi, try with pvmove -t or pvmove -v,

Send the panics output, I think that we need more information.

regards!

On Tue, 26 Apr 2005 12:19:58 +0300, Gergely Imre wrote

Quoted 48 lines

hi
i have a LV with two PVs in it, like this:
--- Logical volume ---
  LV Name                /dev/watchdog/watchdog_var
  VG Name                watchdog
  LV UUID                v6U2JY-PBMf-snpJ-IXX5-ZzcV-y4fk-PchoQg
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                72.22 GB
  Current LE             2311
  Segments               1
  Allocation             next free (default)
  Read ahead sectors     0
  Block device           254:6
--- Physical volumes ---
  PV Name               /dev/sdb2
  PV UUID               5v23aD-mkO0-I9Ur-zUKG-sGd2-8iCP-zhgfJe
  PV Status             allocatable
  Total PE / Free PE    2500 / 189
  PV Name               /dev/sda1
  PV UUID               7mzLEZ-Va0c-sdiW-8KAV-lyjo-a5yI-GBORGS
  PV Status             allocatable
  Total PE / Free PE    2941 / 2753
i want to remove sdb2, so i wanted to make a pvmove /dev/sdb2, so it would move everything to sda1. the strange thing is, pvmove starts, and after, say, 20% (about an hour or so) the whole system hangs somehow. i can ping the box, but any command i try to run, fails. it's like it's waiting for the disk to read/write, or something like that. the distrib is Fedora Core 2.
lvm> version
LVM version: 2.00.15 (2004-04-19)
Library version: 1.00.14-ioctl (2004-04-06)
Driver version: 4.4.0
filesystem is ext3.
the system has 2GB RAM, dual Intel Xeon 3GHz.
i tried with kernel 2.6.11.7, after a while it gives me kernel panic during pvmove. then i tried with 2.6.9, it didn't panic, but it hung, and i had to reboot.

Quoted 7 lines

it's kinda urgent, thanks.
_______________________________________________
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[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

=======================================================================================
Este d�a que tanto temes por ser el �ltimo, es la aurora del d�a eterno.

		-- S�neca. (2 a.C-65) Fil�sofo latino.

=======================================================================================

Gergely Imre

author

2005-04-27 05:46 UTC #2 lore raw

output of the command
pvmove -t -vv -d /dev/sdb2 > /tmp/pvmove-test.txt 2>&1
is here (http://terran.noc.astral.ro/pvmove/pvmove-test.txt)

then, i ran it without -t, like this:
pvmove -vv -d /dev/sdb2 > /tmp/pvmove.txt 2>&1

the output here:
http://terran.noc.astral.ro/pvmove/pvmove.txt

at first, everything seemed alright, it kept writing the progress in the file. i even ran 'lvs' a couple of times:

[root@watchdog tmp]# lvs
LV VG Attr LSize Origin Snap% Move Move%
.
.
.
pvmove0 watchdog p-C-ao 72.22G /dev/sdb2 4.15
watchdog_root watchdog -wn-ao 5.88G
watchdog_var watchdog -wN-ao 72.22G

the filesystem on this LV was mounted and used during the pvmove, but this shouldn't be a problem, right?

i kept an eye on it, it did it's job for around 67%, then it hung, the system was not responding, any command failed, i had to reboot. after the reboot the whole thing started all over again, from the beginning. but there is nothing in the logs that would indicate a problem.

Quoted 77 lines · Eduardo

Hi, try with pvmove -t or pvmove -v,
Send the panics output, I think that we need more information.
regards!
On Tue, 26 Apr 2005 12:19:58 +0300, Gergely Imre wrote
Quoted 48 lines
hi
i have a LV with two PVs in it, like this:
--- Logical volume ---
 LV Name                /dev/watchdog/watchdog_var
 VG Name                watchdog
 LV UUID                v6U2JY-PBMf-snpJ-IXX5-ZzcV-y4fk-PchoQg
 LV Write Access        read/write
 LV Status              available
 # open                 1
 LV Size                72.22 GB
 Current LE             2311
 Segments               1
 Allocation             next free (default)
 Read ahead sectors     0
 Block device           254:6
--- Physical volumes ---
 PV Name               /dev/sdb2
 PV UUID               5v23aD-mkO0-I9Ur-zUKG-sGd2-8iCP-zhgfJe
 PV Status             allocatable
 Total PE / Free PE    2500 / 189
 PV Name               /dev/sda1
 PV UUID               7mzLEZ-Va0c-sdiW-8KAV-lyjo-a5yI-GBORGS
 PV Status             allocatable
 Total PE / Free PE    2941 / 2753
i want to remove sdb2, so i wanted to make a pvmove /dev/sdb2, so it would move everything to sda1. the strange thing is, pvmove starts, and after, say, 20% (about an hour or so) the whole system hangs somehow. i can ping the box, but any command i try to run, fails. it's like it's waiting for the disk to read/write, or something like that. the distrib is Fedora Core 2.
lvm> version
LVM version: 2.00.15 (2004-04-19)
Library version: 1.00.14-ioctl (2004-04-06)
Driver version: 4.4.0
filesystem is ext3.
the system has 2GB RAM, dual Intel Xeon 3GHz.
i tried with kernel 2.6.11.7, after a while it gives me kernel panic during pvmove. then i tried with 2.6.9, it didn't panic, but it hung, and i had to reboot.
Quoted 7 lines
it's kinda urgent, thanks.
_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
=======================================================================================
Este d�a que tanto temes por ser el �ltimo, es la aurora del d�a eterno.
		-- S�neca. (2 a.C-65) Fil�sofo latino. 
=======================================================================================
_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Signature · 6 lines

Gergely Imre
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Tel: +4(0)266-317500
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