Veritas File System 5.1 SP1 Administrator"s Guide (5900-1499, April 2011)

Resolve the condition causing the disk error. If the error was the result of a
temporary condition (such as accidentally turning off a disk or a loose cable),
correct the condition. Check for loose cables, etc. Unmount the file system and
use fsck to run a full structural check (possibly with loss of data).
In case of an actual disk error, if it was a read error and the disk driver remaps
bad sectors on write, it may be fixed when fsck is run since fsck is likely to rewrite
the sector with the read error. In other cases, you replace or reformat the disk
drive and restore the file system from backups. Consult the documentation specific
to your system for information on how to recover from disk errors. The disk driver
should have printed a message that may provide more information.
V-2-38
WARNING: msgcnt x: mesg 038: V-2-38: vx_dataioerr - volume_name file system
file data [read|write] error in dev/block device_ID/block
Description:
A read or a write error occurred while accessing file data. The message specifies
whether the disk I/O that failed was a read or a write. File data includes data
currently in files and free blocks. If the message is printed because of a read or
write error to a file, another message that includes the inode number of the file
will print. The message may be printed as the result of a read or write error to a
free block, since some operations allocate an extent and immediately perform I/O
to it. If the I/O fails, the extent is freed and the operation fails. The message is
accompanied by a message from the disk driver regarding the disk I/O error.
Recommended action:
Resolve the condition causing the disk error. If the error was the result of a
temporary condition (such as accidentally turning off a disk or a loose cable),
correct the condition. Check for loose cables, etc. If any file data was lost, restore
the files from backups. Determine the file names from the inode number.
See the ncheck(1M) manual page.
If an actual disk error occurred, make a backup of the file system, replace or
reformat the disk drive, and restore the file system from the backup. Consult the
documentation specific to your system for information on how to recover from
disk errors. The disk driver should have printed a message that may provide more
information.
V-2-39
WARNING: msgcnt x: mesg 039: V-2-39: vx_writesuper - file system super-block
write error
Diagnostic messages
Dewey kernel messages
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