Environment
Novell Open Enterprise Server 2 (OES 2) Linux Support Pack 1
Novell Open Enterprise Server 2 (OES 2) Linux Support Pack 2
Novell Open Enterprise Server 2 (OES 2) Linux Support Pack 3
Situation
Differences are found between source and target volumes immediately
after data migration from OES2 Linux NSS to OES2 Linux NSS.
Data is often temporarily cached to help improve file access performance. Cached data is not recognized by miggui and can lead to file differences between source and target volumes.
Additionally, open files are not migrated with miggui. The migration.log and debug.log will indicate which files were open and excluded during data migration.
Data is often temporarily cached to help improve file access performance. Cached data is not recognized by miggui and can lead to file differences between source and target volumes.
Additionally, open files are not migrated with miggui. The migration.log and debug.log will indicate which files were open and excluded during data migration.
Resolution
It is best practice to close all open files, commit cached data to
disk, and prevent file access during data migration.
Do the following before loading miggui to start a new data
migration or to sync an existing project:
1) Disconnect any current client connections to data
that will be migrated.
2) Temporarily disable NSS file caching on the source server by setting the following:
2) Temporarily disable NSS file caching on the source server by setting the following:
nss /NoClientFileCaching
nss /FlushFilesImmediately=<volume name>
3) Dismount and remount source volumes.
4) Confirm files to be migrated are not currently
open.
Note: NSS cache settings are active until the server is
rebooted. Reset them if data migration is to be completed
after reboot.