Using the Snapshot Feature
75
Re-creating the Snapshot Virtual Disk
To restart a copy-on-write operation, use the
recreate snapshot virtualDisk
command. This command starts a fresh copy-on-write operation using an
existing snapshot virtual disk. When you restart a snapshot virtual disk, the
snapshot virtual disk must have either an Optimal or a Disabled state.
The following conditions then occur:
•
All copy-on-write data previously on the snapshot repository virtual disk is
deleted.
•
Snapshot virtual disk and snapshot repository virtual disk parameters
remain the same as the previously disabled snapshot virtual disk and
snapshot repository virtual disk. You can also change the
userLabel
,
warningThresholdPercent
, and
repositoryFullPolicy
parameters when you
restart the snapshot virtual disk.
•
The original names for the snapshot repository virtual disk are retained.
Preparing Host Servers to Re-create a Snapshot Virtual Disk
NOTICE:
Before you create a new point-in-time image of a source virtual disk, stop
any data access (I/O) activity or suspend data transfer to the source virtual disk and
snapshot virtual disk to ensure that you capture an accurate point-in-time image of
the source virtual disk. Close all applications, including Windows Internet Explorer,
to make sure all I/O activity has stopped.
NOTE:
Removing the drive letter of the associated virtual disk in Windows or
unmounting the virtual drive in Linux will help to guarantee a stable copy of the
drive for the Snapshot.
Before re-creating a snapshot virtual disk, both the server and the associated
virtual disk you are re-creating have to be in the proper state. To ensure that
the host server is properly prepared to re-create a snapshot virtual disk, you
can either use an application to carry out this task, or you can perform the
following steps:
1
Stop all I/O activity to the source and snapshot virtual disk (if mounted).
2
Using your Windows system, flush the cache to both the source and the
snapshot virtual disk (if mounted). At the host prompt, type
SMrepassist -f <
filename-identifier
>
and press <Enter>. See "SMrepassist Utility" in
the
User’s Guide
for more
information.
Summary of Contents for PowerVault MD3000i
Page 12: ...12 Contents ...
Page 42: ...42 About the Script Commands ...
Page 90: ...90 Using the Virtual Disk Copy Feature ...
Page 104: ...104 Maintaining a Storage Array ...
Page 222: ...222 Script Commands ...
Page 228: ...228 Sample Script Files ...
Page 236: ...236 Index ...