Hi,
We have several clients, each of them has several folders on logical volumes to be backed up. Every folder is assigned to a different stream so that many streams run at the same time. For the client I am looking at now - 13 streams. Every day 2-3 streams fail with error 69. I was told by Symantec support that it happens because VSS is busy with writing snapshot for another folder of the same drive. When NetBackup is requesting for a snapshot to backup - it fails as no snapshot has been done yet. Here is part of the log:
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10:33:07.314 AM: [3668.10092] <2> tar_backup_tfi::setupFileDirectives: TAR - backup filename = Shadow Copy Components:\User Data\Distributed File System Replication\DfsrReplicatedFolders\ROBU - E
10:33:33.038 AM: [3668.10092] <2> ov_log::V_GlobalLog: INF - Using VSS to generate a new SnapshotSetID
10:33:33.053 AM: [3668.10092] <2> ov_log::V_GlobalLog: INF - VssSnapshotVolume- a previous VSS snap is in progress. Entering retry/timeout waiting for snap to complete. Timeout period: 0x7d0
.
. < 33 minute timeout waiting on VSS snapshot>
.
11:07:03.992 AM: [3668.10092] <2> ov_log::V_GlobalLog: INF - StartSnapshotSet failed with error: [0x80042316][VSS_E_SNAPSHOT_SET_IN_PROGRESS]
11:07:03.992 AM: [3668.10092] <2> ov_log::V_GlobalLog: INF - EXIT VssSnapshotVolume::Initialize() return=[0x80042316 VSS_E_SNAPSHOT_SET_IN_PROGRESS]!
11:07:04.164 AM: [3668.10092] <2> tar_base::V_vTarMsgW: INF - EXIT STATUS 69: invalid filelist specification
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My question is whether it is possible to extend this 33 min timeout of waiting for the snapshot.
Temporary solution I test atm is to limit number of multiple streams to 3 at the same time, but it does not always work without error 69. To get rid of it with this implementation I will have to reorder streams carefully to avoid placing folders from the same drive one after another. That might work, but I am not sure that backup will go within 24 hours. In addition, this is a very fragile set up and might break any time data raises or folders added or whatever.
Thank you
