Differences

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--- linux:general:lvm [2019/05/06 14:15] – lunetikk
+++ linux:general:lvm [2020/11/16 17:39] (current) – lunetikk
@@ Line 35: / Line 35: @@
 <code>
 pvcreate /dev/sdb1
-vgcreate data /dev/sdb1
+vgcreate datavg /dev/sdb1
 lvcreate -l 100%FREE -n backuplv datavg
 mkfs.ext3 -Lbackup /dev/datavg/backuplv
@@ Line 156: / Line 156: @@
 |  lvdisplay   |  show all LVs  |\\
 |  vgchange -ay <VGNAME>  |  activate LV  |\\
+|  vgextend datavg /dev/sdd  |  add disk sdd (unpartitioned) to VG datavg  |\\
 |  lvextend -L+5G /dev/data/backup  |  extend by 5GB  |\\
 |  lvextend -L 10G /dev/data/backup  |  extend to 10GB total  |\\
+|  lvcreate -L20G -n backuplv datavg  |  create LV with 20GB total  |\\
+|  lvresize -r -L+5G /dev/data/backup  |  extend by 5GB and do resize2fs/ xfs_growfs  |\\
 === Useful links ===
@@ Line 199: / Line 202: @@
 <code>mount <PATH></code>
 \\
+=== New added disk doesnt appear in /proc/partitions ===
+__**Description**__
+After adding a new disk to your VM the disk doesnt appear in /proc/partition
+__**Reason**__
+The VM didnt rescan the scsi devices
+__**Fix**__
+Run the following command rescan the scsi hosts for new devices
+<code>for host in /sys/class/scsi_host/*; do echo "- - -" | sudo tee $host/scan; lsblk -S ; done</code>
 \\
 ~~DISCUSSION:closed~~

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