Differences

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--- lvm_-_thin_provisioning [2014/06/23 12:12] – [LVM - Thin provisioning] admin
+++ lvm_-_thin_provisioning [2014/06/23 19:48] – [LVM - Thin provisioning] admin
@@ Line 4: / Line 4: @@
 <code>
 # create thin pool
-lvcreate -L 200G vg_kvm1/thinpool
+lvcreate -L 200G -T vg_kvm1/thinpool
 # create thin lv
 lvcreate -V32G -T vg_kvm1/thinpool -n thin_vmpxe
+lvcreate -V1G -T vg001/mythinpool -n thinvolume
 # create thin pool and lv in one command
 lvcreate -L 200G -T vg_kvm1/thinpool -V32G -n thin_vmpxe
 </code>
-===Convert thick LV to thin LV in use by KVM guest===
-  * Shutdown access to lv, for example shut down KVM guest using that thick LV. <code>virsh shutdown vmpxe</code>
-  * Create thin lv. <code>lvcreate -V16G -T vg_kvm1/thinpool -n thin_vmpxe</code>
-  * Copy contents from thick to thin lv. <code>dd if=/dev/vg_kvm1/vmpxe of=/dev/vg_kvm1/thin_vmpxe
-##or use 'pv' to monitor progress.
-dd if=/dev/vg_kvm1/vmpxe | pv -s 32g | dd of=/dev/vg_kvm1/thin_vmpxe
-## free space not yet available:
-lvs
-  LV         VG      Attr       LSize   Pool     Origin Data%  Move Log Cpy%Sync Convert
-  thin_vmpxe vg_kvm1 Vwi-aotz--  32.00g thinpool        100.00
-</code>
-  * Edit KVM guest disk location. <code>virsh edit vmpxe</code>
-  * Start KVM guest.<code>virsh start vmpxe --console</code>
-  * Enable issue discards in lvm.conf, 'discard' in /etc/fstab, regenerate initramfs (dracut -f)
-create file xml:
-  <controller type='scsi' model='virtio-scsi' index='0'/>
-  # virsh attach-device --config Guest1 ~/virtio-scsi-controller.xml
-make sure discard=unmap, bus = scsi and address type is altered to scsi instead of pci:<code>
-<disk type='file' device='disk'>
-  <driver name='qemu' type='raw' discard='unmap'/>
-  <source file='/guests/Fedora19.img'/>
-  <target dev='sda' bus='scsi'/>
-  <address type='drive' controller='0' bus='0' target='0' unit='0'/>
-</disk></code>