Veritas Storage Foundation Release Notes

16
Storage Foundation Release Notes
Changes introduced in 6.0
You can also choose the point of committing the migration, when data
synchronization is complete for all required volumes. In case of errors, it provides
a way to abort the migration and safely revert to the original LVM configuration.
Online migration can utilize SmartMove capability for the data synchronization,
if VxFS is configured on source LVM volumes.
This feature is also integrated with VCS to provide online migration in a VCS HA
environment. During the migration process, VCS monitors and maintains high
availability of the updated configuration.
A new CLI vxmigadm is provided, to administer online migration.
For more details, refer to Veritas Storage Foundation and High Availability
Solutions Solutions Guide.
Veritas Volume Manager throttling of administrative I/O
In this release, Veritas Volume Manager (VxVM) provides throttling of
administrative I/O. During heavy I/O loads, VxVM throttles I/O that it creates to
do administrative operations. This behavior ensures that the administrative I/Os
do not affect the application I/O performance. When the application I/O load is
lighter, VxVM increases the bandwidth usage for administrative I/O operations.
VxVM automatically manages the I/O throttling for administrative tasks, based
on its perceived load on the storage. Currently, I/O throttling is supported for the
copy operations which use ATOMIC_COPY and involve one destination mirror.
The I/O throttling is transparent, and does not change the command usage or
output. The following commands are supported:
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vxassist mirror
vxassist snapcreate
vxevac
vxplex att
vxplex cp
vxplex mv
vxprint
vxsnap addmir
vxsnap reattach
vxsd mv
vxtune