How To Increase GFS and LVM Size

It is assumed that you have configured the storage so that all systems in the cluster can see it prior to continuing through these steps. If you have not, then please see either the iSCSI or SAN How To.

################################################################
LVM Configuration

1. Initialize LUNs with pvcreate..

iSCSI/non-multipath:

pvcreate /dev/sd SAN/multipath:

pvcreate /dev/dm-<0-9> 2. Add a device into the Volume group

vgextend vgcl_gfs__

3. Sync the LVM Metadata
clvmd -R

4. Extend the size of the Logical Volume

lvextend -L +100G /dev/vgcl_gfs__/gfslv

[root ~]# lvextend -L +73G /dev/vgcl_gfs_san_cus/cuslv

Extending logical volume cuslv to 85.00 GB
Logical volume cuslv successfully resized5. Sync the LVM Metadata

clvmd -R

#######################################################################
GFS Configuration

6. Grow the existing GFS file system into the additional space

gfs_grow -v (device|mount)

[root ~]# gfs_grow -v /dev/mapper/vgcl_gfs_san_cus/cuslv /gfs/cus
Preparing to write new FS information...
Done.
Device has grown by less than 100 blocks.... skipping

This TEST will not do anything, but tell you what device and mount point to use.

[root ~]# gfs_grow -Tv /dev/mapper/vgcl_gfs_san_cus/cuslv /gfs/cus