Difference between revisions of "Xen on CentOS 5 - Notes"
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== Added to Quattor System == | == Added to Quattor System == | ||
| − | === LVM === | + | === LVM 2 === |
Due to performance reasons VMs should be installed in LVMs. | Due to performance reasons VMs should be installed in LVMs. | ||
For recovering a LVM in a Raid-1 see:[http://www.linuxjournal.com/node/8874/print Recovery of RAID and LVM2 Volumes] | For recovering a LVM in a Raid-1 see:[http://www.linuxjournal.com/node/8874/print Recovery of RAID and LVM2 Volumes] | ||
| + | |||
| + | Installed Version: | ||
| + | Installed Packages | ||
| + | Name : lvm2 | ||
| + | Arch : i386 | ||
| + | Version: 2.02.16 | ||
| + | Release: 3.el5 | ||
| + | Size : 5.5 M | ||
| + | Repo : installed | ||
| + | Summary: Userland logical volume management tools | ||
| + | |||
| + | |||
| + | ''' for having the live-migration-posibilitshave we have to look at Cluster-LVM or something like that''' | ||
| + | |||
| + | ==== Setting up LVM2 on kribbe ==== | ||
| + | Using /dev/srv resp. /dev/md3 for LVM we have to: | ||
| + | * comment out /dev/md3 in /etc/fstab | ||
| + | * umount /dev/srv (only once) | ||
| + | * Creating the physical volume and XenVG Volumegroup: | ||
| + | |||
| + | [root@kribbe ~]# pvcreate /dev/md3 | ||
| + | Physical volume "/dev/md3" successfully created | ||
| + | [root@kribbe ~]# vgcreate XenVG /dev/md3 | ||
| + | Volume group "XenVG" successfully created | ||
Revision as of 09:48, 19 October 2007
System -- Quattor generated
- Hostname: kribbe.nikhef.nl
- Kernel: 2.6.18-8.1.8.el5xen
- HD-Layout:
[root@kribbe ~]# sfdisk -l /dev/sdb
Disk /dev/sdb: 60801 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdb1 * 0+ 32 33- 265041 fd Linux raid autodetect
/dev/sdb2 33 51025 50993 409601272+ fd Linux raid autodetect
/dev/sdb3 51026 58580 7555 60685537+ fd Linux raid autodetect
/dev/sdb4 58581 60800 2220 17832150 5 Extended
/dev/sdb5 58581+ 60147 1567- 12586896 fd Linux raid autodetect
/dev/sdb6 60148+ 60669 522- 4192933+ fd Linux raid autodetect
/dev/sdb7 60670+ 60800 131- 1052226 fd Linux raid autodetect
====================
[root@kribbe ~]# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sdb1[1] sda1[0]
264960 blocks [2/2] [UU]
md3 : active raid1 sdb2[1] sda2[0]
409601152 blocks [2/2] [UU]
md5 : active raid1 sdb3[1] sda3[0]
60685440 blocks [2/2] [UU]
md2 : active raid1 sdb6[1] sda6[0]
4192832 blocks [2/2] [UU]
md4 : active raid1 sdb7[1] sda7[0]
1052160 blocks [2/2] [UU]
md1 : active raid1 sdb5[1] sda5[0]
12586816 blocks [2/2] [UU]
unused devices: <none>
Added to Quattor System
LVM 2
Due to performance reasons VMs should be installed in LVMs. For recovering a LVM in a Raid-1 see:Recovery of RAID and LVM2 Volumes
Installed Version:
Installed Packages Name : lvm2 Arch : i386 Version: 2.02.16 Release: 3.el5 Size : 5.5 M Repo : installed Summary: Userland logical volume management tools
for having the live-migration-posibilitshave we have to look at Cluster-LVM or something like that
Setting up LVM2 on kribbe
Using /dev/srv resp. /dev/md3 for LVM we have to:
- comment out /dev/md3 in /etc/fstab
- umount /dev/srv (only once)
- Creating the physical volume and XenVG Volumegroup:
[root@kribbe ~]# pvcreate /dev/md3 Physical volume "/dev/md3" successfully created [root@kribbe ~]# vgcreate XenVG /dev/md3 Volume group "XenVG" successfully created
