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--- tech:documentation:procedures:vm:vm_disk_expansion_lvm_xfs [2012/02/14 14:15] – [FOR EXT3/4] kohofer
+++ tech:documentation:procedures:vm:vm_disk_expansion_lvm_xfs [2012/11/19 18:00] – [Create LVM] apano
@@ Line 4: / Line 4: @@
 Expand the original disk or add a second vdisk from **Infrastructure Client**.\\
-If you want to perform a grow w/o reboot you have to add a second disk
+If you want to perform a grow w/o reboot you have to add a second disk.
+If you are on a kernel newer or equal to 2.6.32 then you can issue the command
+<code>echo "1" > /sys/block/sdX/device/rescan</code>
+to get the new size w/o reboot.
+In case you cant see the "disk" do this:
+  echo "1" > /sys/class/scsi_device/2\:0\:0\:0/device/rescan
+whereby after scsi_device you need to find the correct scsi device
 **EXPAND ORIGINAL DISK**
@@ Line 12: / Line 25: @@
   cfdisk /dev/sda
 # for example if the new partition is /dev/sda3
@@ Line 20: / Line 34: @@
   partprobe
   pvcreate /dev/sda3
 now you have to extend the volgroup. use ''lvdisplay'' to see which is the name of the group,\\
@@ Line 107: / Line 120: @@
 ===== FOR EXT3/4 =====
-Check that the filesystem is ok
+Extend filesystem  to use all free space
-  fsck.ext4 /dev/root/root
+  vgextend base /dev/sda3
+  lvextend -l +100%FREE /dev/base/root
-Extend filesystem  to use all free space
+Check that the filesystem is ok, **but only if the FS is unmounted**
-  lvextend -l +100%FREE /dev/root/root
+  fsck.ext4 -f /dev/base
 Now resize the filesystem
-  resize2fs -p /dev/root/root
+  resize2fs -p /dev/base/root
@@ Line 172: / Line 184: @@
 http://www.linuxhaven.de/dlhp/HOWTO-test/DE-LVM-HOWTO-2.html
+http://www.howtogeek.com/howto/40702/how-to-manage-and-use-lvm-logical-volume-management-in-ubuntu/