Hi,
I have successfully setup lvm on top of my software raid 1 (two ide-disks,
hda, hdb, two raid1 on top, md0 and md1, one as root and one for the first
volume group, vg0). Everything works as expected, no problems at all.
Now I want to put two more disks (hdc/hdd) in the machine. For simplicity
reasons (the data is on the second disk) I describe the problem with one
harddisk:
/etc/raidtab
[...]
raiddev /dev/md3
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
persistent-superblock 1
device /dev/hdc1
raid-disk 0
device /dev/hdd1
failed-disk 1
[EMAIL PROTECTED]:~# mkraid /dev/md3
handling MD device /dev/md3
analyzing super-block
disk 0: /dev/hdc1, 100522768kB, raid superblock at 100522688kB
disk 1: /dev/hdd1, failed
[EMAIL PROTECTED]:~# pvcreate /dev/md3
Physical volume "/dev/md3" successfully created
[EMAIL PROTECTED]:~# vgcreate -v vgnew /dev/md3
Adding physical volume '/dev/md3' to volume group 'vgnew'
Archiving volume group "vgnew" metadata.
Creating volume group backup "/etc/lvm/backup/vgnew"
Volume group "vgnew" successfully created
[EMAIL PROTECTED]:~# vgscan
Reading all physical volumes. This may take a while...
Found volume group "vg0" using metadata type lvm2
[EMAIL PROTECTED]:~# lvcreate -L 83G -n smb2 vgnew
Volume group "vgnew" doesn't exist
Uah. Whats that? Creating a filesystem on md3 is no problem, data can be
written and read, mounted, unmounted. So, I decided to test without md:
[EMAIL PROTECTED]:~# pvremove /dev/md3
Labels on physical volume "/dev/md3" successfully wiped
[EMAIL PROTECTED]:~# raidstop /dev/md3
[EMAIL PROTECTED]:~# pvcreate /dev/hdc1
Physical volume "/dev/hdc1" successfully created
[EMAIL PROTECTED]:~# vgcreate -v vgnew /dev/hdc1
Adding physical volume '/dev/hdc1' to volume group 'vgnew'
Archiving volume group "vgnew" metadata.
Creating volume group backup "/etc/lvm/backup/vgnew"
Volume group "vgnew" successfully created
[EMAIL PROTECTED]:~# vgscan
Reading all physical volumes. This may take a while...
Found volume group "vgnew" using metadata type lvm2
Found volume group "vg0" using metadata type lvm2
[EMAIL PROTECTED]:~# lvcreate -L 83G -n smb2 vgnew
Logical volume "smb2" created
[EMAIL PROTECTED]:~# ls -al /dev/vgnew/
total 32
drwx------ 2 root root 4096 Nov 8 12:59 .
drwxr-xr-x 16 root root 28672 Nov 8 12:59 ..
lrwxrwxrwx 1 root root 22 Nov 8 12:59 smb2 -> /dev/mapper/vgnew-smb2
Hmm, this works. Whats up with creating lvm on top of raid? On the same
machine this works (vg0) without problems. There a no messages in syslog, no
dmessages etc. Some machine-data:
Debian testing/sarge
AMD Athlon(TM) XP 1900+
Linux fs 2.6.8-1-k7 #1 Thu Oct 7 02:47:47 EDT 2004 i686 GNU/Linux
ii lvm-common 1.5.17
ii lvm2 2.00.24-1
ii raidtools2 1.00.3-15
How can I trace the problem? Any hints?
--
Beste Gruesse / Best regards Markus Meissner
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