Ah, OK, now I see it’s at least partly a capabilities issue. I’ve had to fix a few things there because of 24.04’s stricter take on capabilities. Though I wouldn’t expect to have to run as root or fiddle with capabilities for it to be able to read the stuff my user can read, which is all I really need it to do. I wasn’t expecting it to back up other users private stuff - there aren’t any, apart from root. Odd.
Anyway, this post ( Kopia UI as root - #12 by kopund ) was helpful.
However, with capabilities tweaked, doing an Estimate gives me a different set of errors 
:
Blockquote
FAILED Bytes: 140.7 TB (0 B excluded) Files: 103936 (0 excluded) Directories: 19141 (0 excluded) Errors: 6 (0 ignored)
02:18:37.955 error in proc/1/task/1/fdinfo: unable to read directory: open //proc/1/task/1/fdinfo: permission denied
02:18:37.955 error in proc/1/task/1: unable to read directory: open //proc/1/task/1/fdinfo: permission denied
02:18:37.955 error in proc/1/task: unable to read directory: open //proc/1/task/1/fdinfo: permission denied
02:18:37.955 error in proc/1: unable to read directory: open //proc/1/task/1/fdinfo: permission denied
02:18:37.955 error in proc: unable to read directory: open //proc/1/task/1/fdinfo: permission denied
02:18:37.955 error in .: unable to read directory: open //proc/1/task/1/fdinfo: permission denied
02:18:37.956 Included files 100 TB… 1 TB: 1 files, total size 140.7 TB
02:18:37.956 Included files 100 MB… 1 GB: 4 files, total size 1.1 GB
02:18:37.956 Included files 10 MB …100 MB: 7 files, total size 178.3 MB
02:18:37.956 Included files 1 MB … 10 MB: 18 files, total size 46.4 MB
02:18:37.956 Included files 100 KB… 1 MB: 173 files, total size 41.6 MB
02:18:37.956 Included files 10 KB …100 KB: 1222 files, total size 37.7 MB
02:18:37.956 Included files 1 KB … 10 KB: 53705 files, total size 216.1 MB
02:18:37.956 Included files 0 B … 1 KB: 48806 files, total size 1.7 MB
02:18:37.956 Excluded files: None
I do not, in fact, possess 140.7 TB of storage. So it’s still unclear what information is actually being provided here, but, the number of files and directories is now at least plausible.
When I start the snapshot at ‘/’, it still insists that it’s backing up 140.7 TB, and the ‘details’ view shows nonsensical numbers for ‘processed bytes’ and hashed bytes/files by comparison with what df -k is telling me, even though the list of files being processed is sensible. It also lists 18446 errors, and occasionally appears to throw a hex dump into the log, though it immediately disappears again.
Eventually it gets to 138.6Gb uploaded, and stops processing files, though it keeps on processing bytes for some reason. Several minutes later, I hit stop. It sits there saying ‘Canceling’ for a very long time. After 15 minutes of cancelling, I terminate it.
Overall I’m afraid this is all rather unimpressive :(.