VERITAS Volume Manager 3.1 Reference Guide

102 Chapter2
Error Messages
Kernel Error Messages
Check the console for other error messages indicating the cause of the
failure. If the disk has failed, then it should be replaced as soon as
possible.
RAID-5 volume entering degraded mode operation
vxvm:vxio:WARNING: RAID-5 raidvol entering degraded
mode operation
• Description
This message occurs when an uncorrectable error has forced the
detach of a subdisk. At this point, not all data disks exist to provide
the data upon request. Instead, parity regions are required to
regenerate the data for each stripe in the array. Accesses will
consequently take longer and will involve reading from all drives in
the stripe.
• Action
Check the console for other error messages indicating the cause of the
failure. If the disk has failed, it should be replaced as soon as possible.
Double failure condition detected on RAID-5 volume
vxvm:vxio:WARNING: Double failure condition detected on
RAID-5 raidvol
• Description
Double-failures occur if I/O errors are received at the same altitude in
the array from more than one column of the array. This could be
caused by a controller failure causing more than a single drive to
become unavailable; by the loss of a second drive after having run in a
degraded state for significant periods of time; or by two separate disk
drives failing simultaneously (which is unlikely to happen).
• Action
If the condition is correctable and the drives recoverable, the
conditions should be corrected. The volume can then be recovered
using the vxrecover(1M) command.
Failure in RAID-5 logging operation
vxvm:vxio:WARNING: Failure in RAID-5 logging operation
vxvm:vxio:WARNING: log object object_name detached from
RAID-5 volume