Hi Linux-Lvm
I am facing a problem with pvmove command of LVM on RHEL4U3 on PPC64
architecture.
pvmove command is never exiting when I try to issue move for more than 4
extents.
Is this a bug with RHEL on PPC64??
If not is there any work around ??
I have posted this issue in RH issue tracker #109657
Summary: Linux ppc64:lvm command 'pvmove' is not getting completed when
more than 4 extends are moved
pvmove --alloc anywhere /dev/sdb3:0-4 /dev/sdb3:256-267
/dev/sdb3: Moved: 80.0%
/dev/sdb3: Moved: 80.0%
/dev/sdb3: Moved: 80.0%
/dev/sdb3: Moved: 80.0%
The above message is displayed for infinitely and pvmove never completes.
This happens for moving 5 or more than 5 extents.
pvmove is successful for 4 or below 4 extents movement.
Configuration
================
OS : RHEL4 UP3
Architecture : PPC64
uname -a : Linux lopgod04.vxindia.veritas.com 2.6.9-34.ELv #1 SMP Mon
Sep 25 13:31:34 BST 2006 ppc64 ppc64 ppc64 GNU/Linux
Internal disk of size 73GB (sdb) : using sdb3 for the LVM operations
I am using sdb which is not boot disk ( I have sda as boot disk in my setup)
fdisk -l /dev/sdb
Disk /dev/sdb: 73.4 GB, 73407488000 bytes
128 heads, 32 sectors/track, 35003 cylinders
Units = cylinders of 4096 * 512 = 2097152 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 1 172+ 41 PPC PReP Boot
Partition 1 does not end on cylinder boundary.
/dev/sdb2 7 2007 4098048 82 Linux swap
/dev/sdb3 2010 6778 9766912 83 Linux
/dev/sdb4 6800 11568 9766912 5 Extended
Steps that caused the above problem
========================================
1. Created partition on /dev/sdb named /dev/sdb3 or size 10G between
2010 and 6778 as above
2. pvcreate /dev/sdb3
vgcreate lopvg4 /dev/sdb3
lvcreate -L 5G -n loplv4 lopvg4
3. lvdisplay --map
--- Logical volume ---
LV Name /dev/lopvg4/loplv4
VG Name lopvg4
LV UUID 62ZATJ-IMKa-xmOk-kmOG-f5LG-Dle8-1Ksaur
LV Write Access read/write
LV Status available
# open 0
LV Size 5.00 GB
Current LE 1280
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:0
--- Segments ---
Logical extent 0 to 1279:
Type linear
Physical volume /dev/sdb3
Physical extents 0 to 1279
4. Moving 5 extents using pvmove
pvmove --alloc anywhere /dev/sdb3:0-4 /dev/sdb3:1290-1294
/dev/sdb3: Moved: 80.0%
/dev/sdb3: Moved: 80.0%
/dev/sdb3: Moved: 80.0%
The above message is displayed for infinitely and pvmove never
completes.
This happens only for moving 4 or above 4 number of extents ..
5. pvmode is successful for moving 4 or less extents as below
pvmove --alloc anywhere /dev/sdb3:0-3 /dev/sdb3:1290-1293
/dev/sdb3: Moved: 100.0%
lvdisplay --map
--- Logical volume ---
LV Name /dev/lopvg4/loplv4
VG Name lopvg4
LV UUID 62ZATJ-IMKa-xmOk-kmOG-f5LG-Dle8-1Ksaur
LV Write Access read/write
LV Status available
# open 0
LV Size 5.00 GB
Current LE 1280
Segments 2
Allocation inherit
Read ahead sectors 0
Block device 253:0
--- Segments ---
Logical extent 0 to 3:
Type linear
Physical volume /dev/sdb3
Physical extents 1290 to 1293
Logical extent 4 to 1279:
Type linear
Physical volume /dev/sdb3
Physical extents 4 to 1279
Thanks and Regards
Sudhakar Kasina
Symantec Corporation (Veritas)
Pune - India
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