Adding a Disk and Extending a Logical Volume - Revision history

Ppapa at 03:48, 22 January 2015

2015-01-22T03:48:45Z

Ppapa at 03:42, 22 January 2015

2015-01-22T03:42:01Z

Ppapa at 03:31, 22 January 2015

2015-01-22T03:31:05Z

Ppapa at 03:25, 22 January 2015

2015-01-22T03:25:04Z

Ppapa at 03:22, 22 January 2015

2015-01-22T03:22:04Z

Ppapa: Created page with "So you have a logical volume that has run out of space and you need to add more. Either it's a VM and you've added another disk file or it's a physical server and you've added a..."

2015-01-22T03:09:56Z

Created page with "So you have a logical volume that has run out of space and you need to add more. Either it's a VM and you've added another disk file or it's a physical server and you've added a..."

New page

So you have a logical volume that has run out of space and you need to add more. Either it's a VM and you've added another disk file or it's a physical server and you've added another disk.

1. Scan the scsi bus to find the new disk

@@ Line 170: / Line 170: @@
      Total PE / Free PE    25599 / 5
-     '''PV Name               /dev/sdd1
+     '''PV Name               /dev/sdd1'''
      PV UUID               bbUskE-8rDY-CdgP-0tQy-CVrJ-SBZI-kaQmUj
      PV Status             allocatable
-     Total PE / Free PE    25599 / 25599'''
+     Total PE / Free PE    25599 / 25599
-.
+.  Extend the Logical Volume, in this example by 50Gb

@@ Line 93: / Line 93: @@
    Syncing disks.
 You sould now have an additional device:
    # ls -al /dev/sd*
@@ Line 106: / Line 112: @@
    brw-rw---- 1 root disk 8, 48 Jan 22 01:14 /dev/sdd
    '''brw-rw---- 1 root disk 8, 49 Jan 22 01:14 /dev/sdd1'''

@@ Line 32: / Line 32: @@
 . Check to see if the new device is there
-   # pvscan
+   # ls -al /dev/sd*
-    PV /dev/sdb1   VG data   lvm2 [100.00 GiB / 0    free]
+  brw-rw---- 1 root disk 8,  0 Jan 22 01:14 /dev/sda
-    PV /dev/sdc1   VG data   lvm2 [100.00 GiB / 0    free]
+   brw-rw---- 1 root disk 8,  1 Jan 22 01:14 /dev/sda1
-    PV /dev/sdd1   VG data   lvm2 [100.00 GiB / 100.00 GiB free]
+   brw-rw---- 1 root disk 8,  2 Jan 22 01:14 /dev/sda2
-    PV /dev/sda3   VG vg1    lvm2 [47.84 GiB / 17.59 GiB free]
+  brw-rw---- 1 root disk 8,  3 Jan 22 01:14 /dev/sda3
-    Total: 4 [347.83 GiB] / in use: 4 [347.83 GiB] / in no VG: 0 [0   ]
+   brw-rw---- 1 root disk 8, 16 Jan 22 01:14 /dev/sdb
    # ls -al /dev/sd*
@@ Line 48: / Line 104: @@
    brw-rw---- 1 root disk 8, 32 Jan 22 01:14 /dev/sdc
    brw-rw---- 1 root disk 8, 33 Jan 22 01:14 /dev/sdc1
-   '''brw-rw---- 1 root disk 8, 48 Jan 22 01:14 /dev/sdd'''
+  brw-rw---- 1 root disk 8, 48 Jan 22 01:14 /dev/sdd

@@ Line 25: / Line 25: @@
    host0  host1  host2
-Probe eash host adapter
+Probe each host adapter
    # echo "- - -" > /sys/class/scsi_host/host0/scan
    # echo "- - -" > /sys/class/scsi_host/host1/scan
    # echo "- - -" > /sys/class/scsi_host/host2/scan
-.
+. Check to see if the new device is there

← Older revision		Revision as of 03:22, 22 January 2015
Line 1:		Line 1:
	So you have a logical volume that has run out of space and you need to add more. Either it's a VM and you've added another disk file or it's a physical server and you've added another disk.		So you have a logical volume that has run out of space and you need to add more. Either it's a VM and you've added another disk file or it's a physical server and you've added another disk.

−	1. Scan the scsi bus to find the new disk	+	1. Check the current disk devices with the following commands:
		+
		+	# pvscan
		+	PV /dev/sdb1 VG data lvm2 [100.00 GiB / 0 free]
		+	PV /dev/sdc1 VG data lvm2 [100.00 GiB / 0 free]
		+	PV /dev/sda3 VG vg1 lvm2 [47.84 GiB / 17.59 GiB free]
		+	Total: 4 [247.83 GiB] / in use: 3 [247.83 GiB] / in no VG: 0 [0 ]
		+
		+	# ls -al /dev/sd*
		+	brw-rw---- 1 root disk 8, 0 Jan 22 01:14 /dev/sda
		+	brw-rw---- 1 root disk 8, 1 Jan 22 01:14 /dev/sda1
		+	brw-rw---- 1 root disk 8, 2 Jan 22 01:14 /dev/sda2
		+	brw-rw---- 1 root disk 8, 3 Jan 22 01:14 /dev/sda3
		+	brw-rw---- 1 root disk 8, 16 Jan 22 01:14 /dev/sdb
		+	brw-rw---- 1 root disk 8, 17 Jan 22 01:14 /dev/sdb1
		+	brw-rw---- 1 root disk 8, 32 Jan 22 01:14 /dev/sdc
		+	brw-rw---- 1 root disk 8, 33 Jan 22 01:14 /dev/sdc1
		+
		+	2. Scan the scsi bus to find the new disk
		+
		+	List the host SCSI adapters
		+	# ls /sys/class/scsi_host/
		+	host0 host1 host2
		+
		+	Probe eash host adapter
		+	# echo "- - -" > /sys/class/scsi_host/host0/scan
		+	# echo "- - -" > /sys/class/scsi_host/host1/scan
		+	# echo "- - -" > /sys/class/scsi_host/host2/scan
		+
		+	3.