There was an issue prior to 9.0.0-15 where large archives caused the S3 connection to disconnect.
Large archives of 2 to 3 TB may cause S3 disconnections.
Certain archive jobs fail with the message 'invalid metadata', while other archive jobs to the same storage are successful.
'External Storage: mystorage is Offline' notifications
Upgrade to Unitrends Backup release 9.0.0-15 or 9.1.0, or a later release.
Various conditions may contribute to this issue:
- A bug in cmc_nas.
- Cloud storage automatically unmounts after an archive job completes. This is by design to avoid any network interruptions and the cloud storage will be automatically mounted when a new archive job starts. An alert/notification was generated that the cloud storage was offline, which was unnecessary and is no longer generated.
- df showed root filesystem at 100% due to some logically-deleted temporary files from mount.s3ql that were still holding space until they were flushed.