trevorr/vss2git

Unknown revision action: 20 and empty folders

carlosrochap opened this issue · 5 comments

carlosrochap commented

Hi,

I cloned this repo and tried to migrate an VSS repo into git, but I got the following error when I click Go

i187 pimgpsh_thumbnail_win_distr

The program keeps running, but when it finishes most of the folders are empty.

I'm using version 1.11 on windows 10. I also tried with version 1.10 but no luck either

Thanks in advance,
Carlos

trevorr commented

You can use VssDump to see if you can figure out what action 20 is. Vss2Git is based on reverse engineering the VSS repository format, since it has never been documented by Microsoft. As you can see here, actions 18, 20-22, and 24 do not have a known meaning.

I wonder if the folders are empty because that action is doing something significant or because the exception caused the processing of the current file to be aborted. It's probably the latter, so a simple fix could be ignoring unknown actions (ideally with a warning logged). Of course, it's hard to know how valid the conversion will be with actions ignored.

Since no one else has reported this error, I'd be curious to know what version of VSS created that action in your repository. Perhaps it was really new or really old?

carlosrochap commented

the VSS version is SourceSafe version v6.0c

alberb commented

I am having the same issue. Also on SourceSafe v6.0, VSS2GIT 1.0.11.0 on Windows 10.

larsxschneider commented

Any news on this topic? I am running into the same problem!

suehshtri commented

I ended up adding more to the exception so I could see what was going on.

throw new ArgumentException("Unknown revision action " + revision.Action + " at revision " + revision + " " + revision.Revision + " dt:" + revision.DateTime);
produced
ERROR: Unknown revision action MysteryAction20 at revision Hpdi.VssPhysicalLib.CommonRevisionRecord 34 dt:12/21/1998 5:33:40 PM
I was able to better dig out the exact revision of the complaint. The context in the log turned out to be misleading given my inexperience with the vss2git code. I then went to go digging, and found mention of a file being 'archived'. Vss help does not open in Windows10 and I resorted to googling until I found a book mentioning VSS archiving. I think this effects a remove of the file. I suspect other actions may restore from an archive.