Hi again, I looked at some of the files in our mystery differential backup (see last post) again. I am pretty sure that some of the backed-up files are really old and have not been modified since the last full backup (last Thursday, 2016-10-06).
Here is one of these ancient files on disk: [root@gundabad ~]# stat /home/stud/mx/simsel/csrc.rtl/3cuS_1_l.dat File: ‘/home/stud/mx/simsel/csrc.rtl/3cuS_1_l.dat’ Size: 37 Blocks: 16 IO Block: 65536 regular file Device: 2eh/46d Inode: 2204123 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 1033/ mb) Gid: ( 1001/ stud) Context: system_u:object_r:nfs_t:s0 Access: 2016-10-09 04:19:46.000000000 +0200 Modify: 2010-12-03 09:37:36.000000000 +0100 Change: 2016-09-06 18:32:55.000010000 +0200 Birth: - With these stats, I would assume that the file would not be part of the differential, since they were also part of the full (job id 2152): * list files jobid=2152 ... | /home/stud/mx/simsel/csrc.rtl/3cuS_1_l.dat ... We have restored the file from the full backup, and it is identical to the file which ended up again in the differential. I am now a bit concerned about the integrity of all of our backups. We did have problems on the _previous_ full Backup that the partition holding the Postgres database had overflowed (due to the database exceeding 13GB). We have since fixed that (increasing the size of the file system). The previous differential on Sunday (2016-10-9) also completed without any errors or warnings, so I had assumed that database problems (if any) due to the overflow had been resolved. So, any ideas what is happening here? Is there an SQL command to find out what Bacula thinks about these files (why they are considered to be different, thus ending up in differential backup)? Best, Andreas
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