How to increase the storage to Linux VM without rebooting the OS
- Clear messages
- Go to the appropriate Vcenter and edit the VM to have the additional disk drive
- Run the following on the linux VM
for i in /sys/class/scsi_host/host*; do echo "- - -" > $i/scan; done
- View information about physical drives that are used by LVM
- Check if the new disk can be seen by OS by running “dmesg” again. Type ‘ls /dev/sd’ and double tab – should see the next disk that was not in the previous “pvs”command – run the below commands with that new letter
ls /dev/sd[x pvcreate /dev/sd[x
- Check if you can see the new drive and extend the Volume Group
pvs vgs vgextend [VolGroup /dev/sd[x vgextend centos /dev/sd[x (For Centos 7) vgs lvs #Use this to display which LV group is being used for storage if LV group not specified already
- Extend the disk and check it has been extended
pvdisplay lvextend -l +100%FREE /dev/[VolGroup/[lv_root lvs
- Check what type of file system is being used
- If ext4 file system resize the disk with
- If xfs file system resize the disk with
xfs_growfs /dev/[VolGroup/[lv_root mount -o remount,inode64 /mnt/nfs # remount the directory to work around the bug in xfs
Keywords: VMware, extending storage, Linux, without reboot
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