Hello Walt, That's a good news you manage to recover your backup.
ext4 has limitation that might be reached for a backup storage. Personally, I would way ext4 file system is not a good choice for data storage. As you found, it has limitation on number of subfolder, it's a journaling filesystem, doesn't have copy on write, not snapshot, it doesn't have any checksum either. -- Patrik Dufresne Service Logiciel inc. http://www.patrikdufresne.com <http://patrikdufresne.com/>/ 514-971-6442 130 rue Doris St-Colomban, QC J5K 1T9 On Thu, Sep 12, 2019 at 7:53 AM Walt Mankowski <walt...@pobox.com> wrote: > Update -- it took about 30 hours to do the regression, started doing > the backup, and then quickly crashed with another "No space left on > device" exception. In kern.log I found these messages: > > Sep 11 21:53:47 scruffy kernel: [294433.260536] EXT4-fs warning (device > sde1): ext4_dx_add_entry:2190: Directory (ino: 30017692) index full, reach > max htree level :2 > Sep 11 21:53:47 scruffy kernel: [294433.260540] EXT4-fs warning (device > sde1): ext4_dx_add_entry:2194: Large directory feature is not enabled on > this filesystem > > It got the error while trying to write a file in > ~/.cache/chromium/Default/Cache. Turns out that after running > rdiff-backup for years I'd accumulated over 6 million files in > > /backup/scruffy/rdiff-backup-data/increments/home/waltman/.cache/chromium/Default/Cache > It's a bit fuzzy how many files you can add to an ext4 directory, but > it looks like I hit the limit. > > I added ~/.cache/chromium to my exclude list and restarted the > backup. It looks a lot happier now. > > Walt > > _______________________________________________ > rdiff-backup-users mailing list at rdiff-backup-users@nongnu.org > https://lists.nongnu.org/mailman/listinfo/rdiff-backup-users > Wiki URL: > http://rdiff-backup.solutionsfirst.com.au/index.php/RdiffBackupWiki _______________________________________________ rdiff-backup-users mailing list at rdiff-backup-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/rdiff-backup-users Wiki URL: http://rdiff-backup.solutionsfirst.com.au/index.php/RdiffBackupWiki
