UFS LUN Expansion

This is the procedure I used to grow a UFS Solaris Volume Manager (SVM) with EMC Powerpath after a Clariion LUN expansion.

  1. Unmount the filesystem.
  2. type format -d <disk> where <disk> is the name of the emcpower device
  3. once in format, type p followed by p to show the current partition table. Make a copy of the partition table as it will be overwritten!
  4. type q and then type
  5. Next, pick option 0 autoconfigure. Warning: This will overwrite your current partition table.
  6. type p to display and modify the new partition table. After you make any necessary modifications to disk slices, type l, then q
  7. growfs /dev/rdsk/<disk> where <disk> is the name of the emcpower device
  8. Mount the filesystem.

Troubleshooting

If the filesystem is not resized, check the format output again. Make sure slice 2 is equal to the size of the LUN expansion. If the disk size is not updated, then try cfgadm -al, devfsadm -C or reboot -- -r. Older fiber cards require a reboot in order to recognize the disk expansion.


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