Accusys ExaRAID GUI - Manual (Page 215)

Advanced Functions
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(3) Shrink the partition on the LUN by your partition editor
(4) Shrink the corresponding logical disk or volume by the firmware
utility
(5) Rescan the physical drives by your operating system utility
• Capabilities at host to support LUN resizing
Proper LUN resizing depends on the capabilities of your operating system,
partition editor, and file system utilities. It is advised to check the related
manuals and do some trial runs before doing LUN resizing for your
production site. You may use file system check utilities after the resizing for
ensuring data integrity.
Below list the software that offers solutions to support partition resizing:
• Symantec Partition Magic : http://www.symantec.com/
• Paragon Partition Manager: http://www.paragon-software.com/
• Arconis Disk Director: http://www.acronis.com/
• Coriolis Systems iPartition (MAC OS): http://www.coriolis-
systems.com/
There are also utilities offered by operating systems or file systems, and
below are some examples:
• Windows 2003 server or later: DiskPart, see 5.5.6 Windows DiskPart
Utility
• Linux ext2/ext3 file systems: resize2fs
• Linux ReiserFS file system: resize_reiserfs
• Linux XFS file system: xfs_growfs
• Linux GNU parted partition editor: http://www.gnu.org/software/
parted/
• Symantec Veritas VxFS: fsadm and extendfs
Below are some commonly-seen restrictions regarding to file system and
partition resizing:
• A LUN for resizing can have only one primary partition and no
extended partition.
• A boot partition with operating system on it might not be shrunk
• Rebooting the OS might be needed after the resizing
• Resizing partition or file system might have to be done offline