![]() ![]() ![]() Corrupt image header files can occur if NetBackup was aborted unexpectedly (for instance, by a system crash) or if some other unexpected event has occurred. Empty (size zero bytes) image header files normally occur if the file system holding the image database has run out of space during a backup, causing the backup to abort, and leaving the unused image header file on the disk. Search for empty media that meet the following criteria:Ĭould not update media list, file read failedįile read failed indicates that there is at least one zero byte or corrupt backup image header somewhere in the NetBackup image database on the master server. ![]() If the command finds a bad image header, it will display this error message: The check for empty tapes, which is performed by both the scheduler and theīpexpdate -deassignempty command, normally completes its operation successfully, but if there are any zero-byte or corrupt image header files in the NetBackup image database, the operation will fail. This command can be executed by the NetBackup administrator at any time. ![]() In addition to the check for empty tapes that is automatically performed by the scheduler, the NetBackup commandīpexpdate -deassignempty can be used to manually check for empty tapes. In this particular situation, failure to expire empty yet allocated tapes may ultimately result in NetBackup having no tapes available for backups or duplications. The empty tape will remain allocated to a media server until its media expiration date is reached (possibly "forever," if the retention period is infinite), or until it is identified as an empty tape. This check is necessary because if a backup has failed, a tape which was allocated for the failed backup may contain no valid images, but remain allocated to a media server and unused until it expires - which may be for days, weeks, months, or in some cases indefinitely, depending on the retention period of the schedule which execute the failed backup.Īnother situation which may also result in a tape that is allocated to a media server becoming "empty" is when all of the images on a tape have been expired prior to the tape's expiration date - for example, by a Storage Lifecycle Policy. If the check identifies an "empty" tape which is allocated to a media server and is not currently being used by a running backup, the tape is expired and returned to the scratch pool. This automatic check is performed approximately every 12 hours. The NetBackup scheduler automatically checks for tapes which are allocated to a media server, but hold no valid images (i.e. ![]()
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