"block %s of file %s in diskgroup %s could not be written"
*Cause: A block could not be written because the disk containing the block
is either offline or an I/O error occured while writing the block.
If this is mirrored file, then insufficient disks which contain a
copy of the block are either offline or received errors.
*Action: Repair the affected disk and bring it back online. Refer to
accompanying error messages to determine which disk has failed.