rn_temp_journal - assure_mimix - assure_mimix_for_aix - 6.0

Assure MIMIX for AIX Guide
Product type
Software
Portfolio
Integrate
Product family
Assure
Product
Assure MIMIX™ Software for AIX
Version
6.0
ft:locale
en-US
Product name
Assure MIMIX for AIX
ft:title
Assure MIMIX for AIX Guide
Copyright
2025
First publish date
2003
ft:lastEdition
2025-03-12
ft:lastPublication
2025-03-12T05:07:12.494000

Usage

You can use the rn_temp_journal command to create a temporary write journal which will extend the snapshot buffer size available for a snapshot. This command is executed on the node that has the recovery server role. It can be executed before or after a snapshot is created. When the snapshot is deleted the temporary write journal may be removed.

Note: This command can be issued up to a maximum of 64 times to add additional space on different volume groups.

Syntax

The following parameters are used:

-C <Context ID>
-v <Volume Group for temp LV>
-s <Size of temp LV in Logical Partitions>
-r Remove temporary Write Journals.
-h help

When creating a temporary write journal LV, allocating and configuring the associated storage pool the "-C, -v and -s" parameters are required. To deallocate a storage pool and remove the temporary write journal LV the "-C and -r" parameters are required.

Note: If the snapshot buffer has reached 100%, the command will fail and you will see the following message:[rn_temp_journal] ERROR: The Write Journal extension cannot be created for Context ID (nn).  A Write Journal extension cannot be created when the Write Journal pool is full.  Delete the snapshot, create the Write Journal extension and create the snapshot. [rn_temp_journal] ERROR: Failed to create the Write Journal extension.