[linux-lvm] vgextend and anomaly?
Liivo Liivrand
liivo at nnm.ee
Mon Sep 6 11:46:23 UTC 2004
Hello!
I've set up LVM2 and using it for a long time. Now I'd like to extend it,
but some strange things will happen. Here is the output on what I'm doing.
Could anybody explain this and help me out?
--- Cut ---
# vgdisplay -v
Finding all volume groups
Finding volume group "loop"
--- Volume group ---
VG Name loop
System ID
Format lvm2
Metadata Areas 9
Metadata Sequence No 26
VG Access read/write
VG Status resizable
MAX LV 255
Cur LV 1
Open LV 1
Max PV 255
Cur PV 9
Act PV 9
VG Size 461.65 GB
PE Size 4.00 MB
Total PE 118183
Alloc PE / Size 117760 / 460.00 GB
Free PE / Size 423 / 1.65 GB
VG UUID c3smTi-4zsd-3D88-XDrS-0qel-pdLU-hTjaZz
--- Logical volume ---
LV Name /dev/loop/vrt
VG Name loop
LV UUID yyiueT-IIgT-C2PW-B6Q9-cuQF-lUE9-ri6tg8
LV Write Access read/write
LV Status available
# open 2
LV Size 460.00 GB
Current LE 117760
Segments 9
Allocation next free (default)
Read ahead sectors 0
Block device 253:1
--- Physical volumes ---
PV Name /dev/md20
PV UUID nCveg1-V16Y-08nq-BG1u-PJYj-HxDZ-0rTOwS
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md21
PV UUID 8DifNi-Xsvx-1y8x-8ZYL-e2NE-lxZI-g5cn4E
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md22
PV UUID XXNuHR-9rUu-t88K-hEFb-vqQb-S1Sw-pZIbIU
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md23
PV UUID lQqCD8-nS21-47a7-y7mN-0Ysi-v6Ey-NJqOdA
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md24
PV UUID jCpAXU-k0qs-bVvI-Shyc-R2YR-hbnJ-aYulWR
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md10
PV UUID GJhjij-ovSA-dGbT-4duJ-E7lL-laRl-bD9oxO
PV Status allocatable
Total PE / Free PE 8191 / 0
PV Name /dev/md11
PV UUID wDZ4XC-5bVL-hHQy-37cX-Dmov-1ARX-Fyg3G5
PV Status allocatable
Total PE / Free PE 22499 / 0
PV Name /dev/md12
PV UUID 6Ohei3-Qbtc-WL5g-Nmmg-mNnT-9t46-DObz2l
PV Status allocatable
Total PE / Free PE 22499 / 0
PV Name /dev/md14
PV UUID AFr95V-lZhU-JfCC-q3DU-Z2me-Ax0a-x4qYvS
PV Status allocatable
Total PE / Free PE 14999 / 423
# So far so good! No I'd like to add /dev/md13 to VG. First I make md13 and
check its status:
# ps axwf
26518 pts/0 S 0:26 nbd-client host2 9000 /dev/nb2
26591 pts/0 S 0:22 nbd-client host12 9001 /dev/nb12
# mkraid -R /dev/md13
DESTROYING the contents of /dev/md13 in 5 seconds, Ctrl-C if unsure!
handling MD device /dev/md13
analyzing super-block
disk 0: /dev/nb2, 25600000kB, raid superblock at 25599936kB
disk 1: /dev/nb12, 25608192kB, raid superblock at 25608128kB
# cat /proc/mdstat
md13 : active raid0 nbd12[1] nbd2[0]
51206144 blocks 1024k chunks
# pvcreate -ff /dev/md13
Physical volume "/dev/md13" successfully created
# fdisk -l /dev/md13
Disk /dev/md13: 52.4 GB, 52435091456 bytes
2 heads, 4 sectors/track, 12801536 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
# Ok, this were all ok. But now!
# vgextend loop /dev/md13
Volume group "loop" successfully extended
# vgdisplay -v
Finding all volume groups
Finding volume group "loop"
--- Volume group ---
VG Name loop
System ID
Format lvm2
Metadata Areas 9
Metadata Sequence No 27
VG Access read/write
VG Status resizable
MAX LV 255
Cur LV 1
Open LV 1
Max PV 255
Cur PV 10
Act PV 10
VG Size 510.48 GB
PE Size 4.00 MB
Total PE 130684
Alloc PE / Size 117760 / 460.00 GB
Free PE / Size 12924 / 50.48 GB
VG UUID c3smTi-4zsd-3D88-XDrS-0qel-pdLU-hTjaZz
--- Logical volume ---
LV Name /dev/loop/vrt
VG Name loop
LV UUID yyiueT-IIgT-C2PW-B6Q9-cuQF-lUE9-ri6tg8
LV Write Access read/write
LV Status available
# open 2
LV Size 460.00 GB
Current LE 117760
Segments 9
Allocation next free (default)
Read ahead sectors 0
Block device 253:1
--- Physical volumes ---
PV Name /dev/md20
PV UUID nCveg1-V16Y-08nq-BG1u-PJYj-HxDZ-0rTOwS
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md21
PV UUID 8DifNi-Xsvx-1y8x-8ZYL-e2NE-lxZI-g5cn4E
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md22
PV UUID XXNuHR-9rUu-t88K-hEFb-vqQb-S1Sw-pZIbIU
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md23
PV UUID lQqCD8-nS21-47a7-y7mN-0Ysi-v6Ey-NJqOdA
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md24
PV UUID jCpAXU-k0qs-bVvI-Shyc-R2YR-hbnJ-aYulWR
PV Status allocatable
Total PE / Free PE 9999 / 0
PV Name /dev/md10
PV UUID GJhjij-ovSA-dGbT-4duJ-E7lL-laRl-bD9oxO
PV Status allocatable
Total PE / Free PE 8191 / 0
PV Name /dev/md11
PV UUID wDZ4XC-5bVL-hHQy-37cX-Dmov-1ARX-Fyg3G5
PV Status allocatable
Total PE / Free PE 22499 / 0
PV Name /dev/md12
PV UUID 6Ohei3-Qbtc-WL5g-Nmmg-mNnT-9t46-DObz2l
PV Status allocatable
Total PE / Free PE 22499 / 0
PV Name /dev/md14
PV UUID AFr95V-lZhU-JfCC-q3DU-Z2me-Ax0a-x4qYvS
PV Status allocatable
Total PE / Free PE 14999 / 423
PV Name /dev/nb2
PV UUID Uuf1tv-4SGG-zbmD-qvxO-Q4ZN-5Iiv-rMJWds
PV Status allocatable
Total PE / Free PE 12501 / 12501
--- Cut ---
Notice the last PV!!! I'm adding md13, but getting nb2, why???
--- Cut ---
# vgreduce loop /dev/md13
Physical Volume "/dev/md13" not found in Volume Group "loop"
# vgreduce loop /dev/nb2
Removed "/dev/nb2" from volume group "loop"
# uname -r
2.6.5-1.358
# rpm -qv lvm2
lvm2-2.00.15-2
--- Cut ---
So could anybody help me out and give me hint what to do to add successfully
md13. Note that all previos md-s are actually raid0 of nbd-s.
rgds,
Liivo Liivrand
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