Hi, We've been running a subversion server since 2003, over the years we've come across the svndiff decompression error numerous times, it's almost always when we're committing binary files to the repository. Historically we've always noticed it quite quickly and fixed the issue by deleting the offending file and re-committing it. This solved the immediate problem where other people could not checkout or update the repo but it's left the offending revisions in our repo.
As we're running a ridiculously old subversion server (1.4.4) on a ridiculously old operating system (Fedora 7) I've decided it's time to migrate to a new server. I'm also looking at making read only mirrors available in our other offices to save time checking out applications over the WAN and to provide geographically separate backups. In order to do this I've been using svnsync to replicate a copy of the repository to a different server. As I've come across the svndiff errors I've been using the fsfsverify.py to fix them and so far it's worked and I've got to revision 24953 of 83080. Unfortunately I have now got to a revision that fsfsverify.py has been unable to fix, it keeps on detecting problems and fixing them but does this with ever changing offsets and amount until it gets to the point where it just constantly cycles between 2 different sets of offfsets and amounts. The error fsfsverify originally comes out with is... Error InvalidCompressedStream: Invalid compressed instr stream at offset 154848839 (Error -3 while decompressing: incorrect header check) Unfortunately the binary file that got corrupted was a copy of an open office install package which makes the revision 150MB and thus is rather tricky to fix by hand. Apart from using fsfsverify I also tried recreating the diff by creating a Fedora 7 VM, running svnsync on it to copy the repo up to that point and then manually committing the file and copying the revision over to the copy of my original repo. Whilst this allows svnsync to get past that revision I then started having lots of problems with incorrect byte offsets in later revisions and once I (think I correctly) fixed started getting checksum errors. Once I (again think I correctly) fixed those I then got another error. At which point I decided I was disappearing down a rabbit hole and gave up. Does anyone have any ideas on how I can fix this revision? As I mentioned before, the file gets deleted a couple of revisions later so I don't really care about the contents of the revision but I'm currently stuck and can't get any further in my svnsync. Thanks in advance for your help! Mike