Hi, I am learning about LVM by resizing {expanding mainly} PV through
the addition of LVM partitions and another disk.
This has been working well, but I have got to a point where I can no
longer expand an LV. From system-config-lvm, I get:
lvresize command failed. Command attempted: "/usr/sbin/lvextend -l 29172
/dev/vgstorage/lvhome" - System Error Message: device-mapper: reload
ioctl failed: Invalid argument
Failed to suspend lvhome
At this stage it seems like a bug which I entered as:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=247112
=====
# mount
/dev/sda3 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda2 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
=====
# fdisk -l
Disk /dev/sda: 36.3 GB, 36362518528 bytes
255 heads, 63 sectors/track, 4420 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1759 14129136 7 HPFS/NTFS
/dev/sda2 1760 1762 24097+ 83 Linux
/dev/sda3 1763 2272 4096575 83 Linux
/dev/sda4 2273 4420 17253810 5 Extended
/dev/sda5 2273 4218 15631213+ 8e Linux LVM
/dev/sda6 4219 4420 1622533+ 82 Linux swap / Solaris
Disk /dev/sdb: 36.3 GB, 36362518528 bytes
255 heads, 63 sectors/track, 4420 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 4 32098+ 83 Linux
/dev/sdb2 5 557 4441972+ 8e Linux LVM
/dev/sdb3 558 1110 4441972+ 8e Linux LVM
/dev/sdb4 1111 4420 26587575 5 Extended
/dev/sdb5 1111 1663 4441941 8e Linux LVM
/dev/sdb6 1664 2216 4441941 8e Linux LVM
/dev/sdb7 2217 2769 4441941 8e Linux LVM
/dev/sdb8 2770 3322 4441941 8e Linux LVM
/dev/sdb9 3323 3875 4441941 8e Linux LVM
/dev/sdb10 3876 4420 4377681 8e Linux LVM
Disk /dev/sdc: 36.6 GB, 36637245440 bytes
255 heads, 63 sectors/track, 4454 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 3 24066 83 Linux
/dev/sdc2 4 562 4490167+ 8e Linux LVM
/dev/sdc3 563 1121 4490167+ 8e Linux LVM
/dev/sdc4 1122 4454 26772322+ 5 Extended
/dev/sdc5 1122 1680 4490136 8e Linux LVM
/dev/sdc6 1681 2239 4490136 8e Linux LVM
/dev/sdc7 2240 2798 4490136 8e Linux LVM
/dev/sdc8 2799 3357 4490136 8e Linux LVM
/dev/sdc9 3358 3916 4490136 8e Linux LVM
/dev/sdc10 3917 4454 4321453+ 8e Linux LVM
Disk /dev/sdd: 36.4 GB, 36420075520 bytes
255 heads, 63 sectors/track, 4427 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdd1 1 3 24066 83 Linux
/dev/sdd2 4 557 4450005 8e Linux LVM
/dev/sdd3 558 1111 4450005 8e Linux LVM
/dev/sdd4 1112 4427 26635770 5 Extended
/dev/sdd5 1112 1665 4449973+ 8e Linux LVM
/dev/sdd6 1666 2219 4449973+ 8e Linux LVM
/dev/sdd7 2220 2773 4449973+ 8e Linux LVM
/dev/sdd8 2774 3327 4449973+ 8e Linux LVM
/dev/sdd9 3328 3881 4449973+ 8e Linux LVM
/dev/sdd10 3882 4427 4385713+ 8e Linux LVM
Disk /dev/dm-0: 3313 MB, 3313500160 bytes
255 heads, 63 sectors/track, 402 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-0 doesn't contain a valid partition table
Disk /dev/dm-1: 107.1 GB, 107164467200 bytes
255 heads, 63 sectors/track, 13028 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-1 doesn't contain a valid partition table
=====
# vgdisplay
--- Volume group ---
VG Name vginfrastructure
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 12
VG Access read/write
VG Status resizable
MAX LV 256
Cur LV 1
Open LV 0
Max PV 256
Cur PV 1
Act PV 1
VG Size 4.17 GB
PE Size 4.00 MB
Total PE 1068
Alloc PE / Size 790 / 3.09 GB
Free PE / Size 278 / 1.09 GB
VG UUID X3a9Nx-EkS6-RuZW-Fnti-iSGu-Q16u-jvkI5K
--- Volume group ---
VG Name vgstorage
System ID
Format lvm2
Metadata Areas 24
Metadata Sequence No 43
VG Access read/write
VG Status resizable
MAX LV 256
Cur LV 1
Open LV 0
Max PV 256
Cur PV 24
Act PV 24
VG Size 113.95 GB
PE Size 4.00 MB
Total PE 29172
Alloc PE / Size 25550 / 99.80 GB
Free PE / Size 3622 / 14.15 GB
VG UUID pBSCOY-C0LF-raej-ZjiM-wOcp-6pcE-miV377
=====
# time lvdisplay
--- Logical volume ---
LV Name /dev/vginfrastructure/lvinfrastructure
VG Name vginfrastructure
LV UUID Ba80ED-T1Ap-DNwu-cDv0-rQlt-yau8-qZeqCW
LV Write Access read/write
LV Status available
# open 0
LV Size 3.09 GB
Current LE 790
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:0
--- Logical volume ---
LV Name /dev/vgstorage/lvhome
VG Name vgstorage
LV UUID 9DmkGv-SEuo-Cj7A-Ylrf-Pz3k-szAi-Tu9ELu
LV Write Access read/write
LV Status available
# open 0
LV Size 99.80 GB
Current LE 25550
Segments 21
Allocation inherit
Read ahead sectors 0
Block device 253:1
real 0m6.970s
user 0m0.172s
sys 0m0.073s
=====
# time pvscan
PV /dev/sdb10 VG vginfrastructure lvm2 [4.17 GB / 1.09 GB free]
PV /dev/sdc2 VG vgstorage lvm2 [4.28 GB / 0 free]
PV /dev/sdc3 VG vgstorage lvm2 [4.28 GB / 0 free]
PV /dev/sdc5 VG vgstorage lvm2 [4.28 GB / 0 free]
PV /dev/sdc6 VG vgstorage lvm2 [4.28 GB / 0 free]
PV /dev/sdc7 VG vgstorage lvm2 [4.28 GB / 0 free]
PV /dev/sdc8 VG vgstorage lvm2 [4.28 GB / 0 free]
PV /dev/sdc9 VG vgstorage lvm2 [4.28 GB / 0 free]
PV /dev/sdc10 VG vgstorage lvm2 [4.12 GB / 0 free]
PV /dev/sdd2 VG vgstorage lvm2 [4.24 GB / 0 free]
PV /dev/sdd3 VG vgstorage lvm2 [4.24 GB / 0 free]
PV /dev/sdd5 VG vgstorage lvm2 [4.24 GB / 0 free]
PV /dev/sdd6 VG vgstorage lvm2 [4.24 GB / 0 free]
PV /dev/sdd7 VG vgstorage lvm2 [4.24 GB / 0 free]
PV /dev/sdb2 VG vgstorage lvm2 [4.23 GB / 0 free]
PV /dev/sdb3 VG vgstorage lvm2 [4.23 GB / 0 free]
PV /dev/sdd8 VG vgstorage lvm2 [4.24 GB / 0 free]
PV /dev/sdd9 VG vgstorage lvm2 [4.24 GB / 0 free]
PV /dev/sdd10 VG vgstorage lvm2 [4.18 GB / 0 free]
PV /dev/sdb5 VG vgstorage lvm2 [4.23 GB / 0 free]
PV /dev/sdb6 VG vgstorage lvm2 [4.23 GB / 0 free]
PV /dev/sdb8 VG vgstorage lvm2 [4.23 GB / 4.23 GB free]
PV /dev/sda5 VG vgstorage lvm2 [16.35 GB / 1.45 GB free]
PV /dev/sdb7 VG vgstorage lvm2 [4.23 GB / 4.23 GB free]
PV /dev/sdb9 VG vgstorage lvm2 [4.23 GB / 4.23 GB free]
Total: 25 [118.12 GB] / in use: 25 [118.12 GB] / in no VG: 0 [0 ]
real 0m6.997s
user 0m0.166s
sys 0m0.073s
=====
As well as the error message above, I also notice that:
1. The error is repeatable if the command mentioned in the error message
is entered at the command line.
2. The error message takes many minutes to appear. How could I find out
what causes the delay ?
3. Once I click OK, the scan LVM function {even when I first start
s-c-lvm}, takes about three minutes. This seems to be getting longer
with each pv I added to the vg {and expanded the lv to fill}. I assume
this is abnormal ?
4. The lv size is 99.8GB. In getting to the point where I can't make it
any bigger {even by 1x extent}, I noticed that if I try to expand by
smaller bits, then it was actually succeeding. Is there some
real/practical limit on lv size {eg 100GB} ?
Does it matter about extent size ?
Can someone shed some light ?
David Timms
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