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[linux-lvm] vgextend and anomaly?
- From: "Liivo Liivrand" <liivo nnm ee>
- To: <linux-lvm redhat com>
- Subject: [linux-lvm] vgextend and anomaly?
- Date: Mon, 6 Sep 2004 14:46:23 +0300
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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