Veritas Volume Manager 5.0 Release Notes HP-UX 11i v3 (5992-1952, August 2011)

# vxassist mirror volume layout=log ...
The mirror is added but the log is omitted.
Workaround
To add a log and a mirror, add them separately as using two different instances of the
vxassist command.
For example:
# vxassist mirror volume ...
# vxassist addlog volume ...
• Problem
The vxvol and vxmend commands do not handle layered volumes. When the vxmend
command is run on the top level volume to change the state of a volume, it is executed only
on the top level volume. The change is not propagated to the volumes at the lower levels and
the volume states may become inconsistent. As a result, the vxvol init command can fail.
The same behavior is noticed with the vxvol command. When a vxvol init command
is executed on the top level volume, the change is not propagated to the volumes corresponding
to its sub volumes.
Workaround
To run the vxvol or vxmend commands on a layered volumes, first run the command on the
lower level volumes and then run the commands on the top-level volumes.
In this example, a volume vol has two subvolumes vol-L01 and vol-L02. You must first
set the state of the volumes to empty, and then the run the following commands:
# vxmend -o force -g mydg fix empty vol
# vxmend -o force -g mydg fix empty vol-L01
# vxmend -o force -g mydg fix empty vol-L02
# vxvol -g mydg init zero vol
# vxvol -g mydg init zero vol-L01
# vxvol -g mydg init zero vol-L02
• Problem
Due to the current implementation of a resize of layered volumes, it is recommended that you
do not grow or shrink layered volumes (for example; stripe-mirror, concat-mirror) during
resynchronization. This limitation does not apply to ISP layered volumes.
Internally, VxVM converts the layout of the layered volumes and updates the configuration
database before it does the actual resize. This causes any ongoing operation, such as a
resynchronization, to fail.
Workaround
If the system reboots before the grow or shrink process of a layered volume completes, the
volume is left with an intermediate layout. In this case, you have to use vxassist convert
command to restore the volume to its original layout.
After a layered volume is resized, the volume, plex, and subdisk names associated with the
subvolumes are changed.
• Problem
The VxVM configuration daemon vxconfigd hangs due to a faulty disk. If the I/O hangs,
for reasons such as a disk failure, while the vxconfigddaemon is performing I/O from or
to the disks, there is no way to communicate with the daemon. The daemon will not respond
Known Problems And Workarounds 23