fsck on lvm can be a bit tricky. Like a the normal process, the partition needs to be umounted and we can boot up using the rescue cd or in emergency mode. Normally, you
fsck /dev/sda1
if the partition is lvm, you need to activate the lvm first like so
vgchange --ignorelockingfailure -ay lvscan --ignorelockingfailure (this command should now work) fsck /dev/volumegroup/lvname
if the logical volume contains a partition, you need to kpartx the lv.
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I dont see any reason why one should use lvm in xen guest. The whole idea of using lvm is to have the ability to resize disk size easily and resizing a xen guest can be done easily without using LVM. Actually, having LVM in xen guest complicates the process of resizing… You can google … Continue reading
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Resizing a lvm partition is straight forward if it doesn’t contain a partition table. Simply do a: lvresize -L disksize /dev/vg/lv resize2fs /dev/vg/lv If it is running a virtual machine like xen with a partition table, how to resize the domU, whether to shutdown domU or not depends largely on the partiton structure. In centos, … Continue reading
shrinking a lvm partition is straight forward if it doesn’t contain a partition table. Simply do a: umount lvm_partition resize2fs /dev/vg/lv newSize lvresize -L disksize /dev/vg/lv resize2fs /dev/vg/lv execute the last command if nessary. Assuming you have a partition table in a 10G domU which uses the default partition table, Disk /dev/xenvg/XenWeb: 10.5 GB, 10502537216 … Continue reading