SYS.VSSWriter is generating alerts in Messages.log

05/20/24-11:05:47:140 (7248) 1 [Utility.Event] Backup.General.ExternalFreeze: Warning, d:\intersystems\healthconnect\mgr\irislocaldata\ is not being journalled
05/20/24-11:05:47:140 (7248) 1 [Utility.Event] Backup.General.ExternalFreeze: Warning, d:\intersystems\healthconnect\mgr\hslib\ is not being journalled

I don't know why they weren't journalled, but when I set to be journalled, the error I initially reported has since disappeared.

Thanks for your comment, it help me solve my problem.

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score 0 · Answer 1 · 2024-05-23T09:16:41-04:00

VSS in Windows is Volume Shadow Copy Service that (to simplify) provide snapshots for the disk storage.

IRIS now support VSS for external backups.

Are you performing a backup when this happen?

I suggest to check the Windows event log for issues with VSS.

score 0 · Answer 2 · 2024-05-23T09:21:38-04:00

In your messages.log do you see entries like:

[Generic.Event] VSS Writer: OnFreeze
......
......
[Generic.Event] VSS Writer: OnThaw

This is what is logged when a VSS snapshot is performed in windows.

In "well behaved Windows server" this two messages are less that a minute apart

score 0 · Answer 3 · 2024-05-23T12:54:30-04:00

irislib database is mounted as readonly database, so journal is disabled.

irislocaldata database contains items used internally by IRIS and journal is disabled by design.

This is standard/normal in any IRIS installation.

I doubt your issue is caused by these journal being disabled and I would not tamper default/standard journal configuration for system databases.

score 0 · Answer 4 · 2024-05-23T13:02:06-04:00

Enrico Parisi · May 23

What does the file alert.log (in mgr dir as messages.log) contains?

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