The following section provides information on troubleshooting backups.
Incremental backups are failing
If this event is generated:
nasBackup: Exceeded maximum number of
incremental backups. Must run full or differential backup
Then set the the
sConvertToFull registry key to Y to
kick off a Full backup if all paths in a subclient have exceeded the
maximum number of incremental backups.
NAS-attached libraries shared across a SAN
During configuration, all of the drive devices must have a value for
their serial number.
If the automatic configuration does not populate a serial number for
a drive, you must manually enter a serial number value. Each instance of
a drive must have the same serial number.
Some items such as files or folders e.t.c., fail because they are locked by
the operating system or application and cannot be opened at the time of the data
protection operation. This items will be displayed in the "Items That Failed"
list when Job History Report is run.
Solution
Filter the files that consistently appear in the "Items That Failed" list on
the data protection Job History Report and exclude those files or folders during
backup to avoid backup failure.
Completed with One or More Errors
Backup jobs from NAS iDataAgent
will be displayed as Completed
w/ one or more errors in the Job History in the following
cases:
Backup context no longer exists on the file server. Backup cannot be
restarted.
Failing restarted backup of path [^1%s]. Failed to get context list from
the file server.
Data Loss detected. The number of tape blocks written as reported by
NDMP tape server does not match the reported value for the actual tape
drive.
Failed to update the reference time. Failing path.
Error committing chunks with the Job Manager. Failing path.
Failing restarted backup of path. The restart string does not match the
data backed up.
Failing restarted backup of path. Unable to parse the restart string. If
this error persists, please kill the backup and start a new one.
Exceeded maximum number of incremental backups. Must run full or
differential backup.
EMC Celerra backup failed: probably an incorrect data backup path in
subclient content.
Error writing chunk trailer to media.
Error marking the media full at end of media.
ArchiveManager error marking chunk closed in the database.
Failure to update restart string.
Failed to update media information in the database.
Error writing chunk header to NAS attached tape.
Error enabling hardware encryption on NAS attached tape drive.
Error mounting media in NAS attached tape drive.
NDMP Server [<File Server>] was unable to back up path. It
is likely this path does not exist.
Unexpected NDMP error communicating with client [<File
Server>].
Unexpected NDMP error communicating with tape server [<File Server>].
NDMP connection to host [<File Server>] failed. Verify if
NDMP can be reached on this host.
Could not position tape. Error returned [<File
Server Error String>].
<File Server>
: tape server halted with internal error.
Tape server halted with INTERNAL_ERROR and may not have received any
data for the timeout period. Backup may be retried with NDMP_API DWORD
registry key nREADSOCKETTIMEOUT set to a larger value, in seconds.
NDMP Server is reporting a write error: [NDMP_MOVER_HALT_MEDIA_ERROR].
NDMP Server is reporting a write error: [NDMP_MOVER_PAUSE_MEDIA_ERROR].
Received data halt with internal error. See nasBackup.log for problem
details.
Error updating the new chunk information in the database. Error write
file mark to NAS attached media.
Error sending backup file information to indexing.
When using snapmirror-to-tape, a full volume must be backed up. Backup
Path is not a full volume.
NDMP authentication failed.
Failed to start the NRS process on remote host [<Media Agent>].