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# Tested on RHEL 6
# We are extending a given GFS2 filesystem like following one by adding 1GB: df -h /sharedfs Filesystem Size Used Avail Use% Mounted on /dev/mapper/gfsvg-lv_gfs 4.0G 259M 3.8G 7% /sharedfs lvs | grep lv_gfs lv_gfs gfsvg -wi-ao--- 4.00g # Variable definition
VG=gfsvg LV=lv_gfs MNTPT=/sharedfs SIZETOADD=1GB FINALSIZE=5GB # Final Size # First of all check if there is available space on the volume group the F.S. belongs to vgs $VG VG #PV #LV #SN Attr VSize VFree gfsvg 1 1 0 wz--nc 8.00g 4.00g ^ ^ # Let's extend the logical volume by specifying the size to be added: lvextend -L +$SIZETOADD $VG/$LV Extending logical volume lv_gfs to 5.00 GiB Logical volume lv_gfs successfully resized # or by specifying the final size: # # lvextend -L $FINALSIZE $VG/$LV # Extending logical volume lv_gfs to 5.00 GiB # Logical volume lv_gfs successfully resized # Test what the tool will do gfs2_grow -T /dev/$VG/$LV # ...and then actually resize the GFS2 gfs2_grow /dev/$VG/$LV FS: Mount Point: /sharedfs FS: Device: /dev/dm-8 FS: Size: 1048575 (0xfffff) FS: RG size: 65533 (0xfffd) DEV: Size: 1310720 (0x140000) The file system grew by 1024MB. gfs2_grow complete. # or 'gfs2_grow $MNTPT' df -h $MNTPT Filesystem Size Used Avail Use% Mounted on /dev/mapper/gfsvg-lv_gfs 5.0G 259M 4.8G 6% /sharedfs |