>>>>> On Tue, 15 Dec 2020 11:31:46 +0100, Andrea Venturoli said: > > Hello. > > I'm backing up a FreeBSD server where Cyrus IMAP runs and I'm using > Full/Differential/Incremental scheme. > > As you probably know, Cyrus IMAP uses hardlinks to avoid saving > duplicate messages (and probably for other things). > > > > I tried a test recovery yesterday and I was flooded with messages like > the following: > > Error: create_file.c:351 Could not hard link > > /zroot/brestore/temp/var/spool/imap/.zfs/snapshot/bacula/user/xxxx/SomeFolder/12610. > > -> > > /zroot/brestore/temp/var/spool/imap/.zfs/snapshot/bacula/user/xxxx/34966.: > > ERR=No such file or directory > > What I *think* happened here is that the user moved the message to > SomeFolder and Cyrus implemented this by creating a new hard link, later > removing the original message file from Inbox. > All the errors above came up reading from the Full volume: no errors > were present when reading the Differential or Incremental ones, but I'm > not sure this is a rule. > I verified some of these files are currently present in the original > data, but not on the restored data!!! > > How does Bacula support hard-links? Is this expected to work? Are there > any options I should set? > > > > Could it be that Bacula: > _ does not restore the "original" file, since it was present at the > moment of the Full backup, but gone later (when the last incremental was > taken); > _ doing so cannot create the linked file?
Possibly, but creating or removing a hard link should change the ctime on the inode and cause the file and its links to be backed up again in the next Differential/Incremental. What is the fileset definition? Perhaps you can track down a minimal set of jobs that trigger the problem by using the "Select backup for a client before a specified time" option. Start with a time just after the end of the Full backup. Does that restore without errors? If so, then increase the time to include more and more Differential/Incremental backups until the problem occurs. __Martin _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
