Hello all. Just wanted to share with you what happened to me and check if you have any idea on what is going on. I have been a satisfied user of backuppc for a long time. So far I am using a 3.3.0 version on a debian 7 on a local vm (a local vmware esxi i have full control on): no problem with this approach.
I needed to switch to a cloud solution, though. No need to migrate the pool. I thought about installing backuppc v4 and just starting from that, adding my old hosts (to avoid v3/v4 pool version issues) My pool is 0.7 TB so to keep the budget low I planned to buy a low-middle sized vm plus some "cloud storage space". I read that hardlinks support is no longer strictly mandatory (but it can affect performance) on v4 so I was about to give it a try. I hope I understood this crucial point correctly. So i installed backuppc 4.4.0-3 (standard repo version on debian 11) I mounted the cloud space with sshfs as user backuppc, this are the options in the fstab line: idmap=user,allow_other,default_permissions,IdentityFile=/root/.ssh/<privatekey>,port=23,ServerAliveInterval=15,reconnect,_netdev,uid=108,gid=114 uid and gid are backuppc user and group I got a working installation and I tried a successful backup (full and incr) of localhost (tar method), with no errors. Then I tried to add some remote linux servers (rsync over ssh method) and I got several transfer errors... very similar across all the servers... for example a sample from xferLOG: [...] This is the rsync child about to exec /usr/libexec/backuppc-rsync/rsync_bpc Xfer PIDs are now 39411,39414 xferPids 39411,39414 G bpc_path_create: can't create f%2fetc%2f/attrib (errno 2) G bpc_path_create: can't create f%2fetc%2f/attrib (errno 2) => [lots of repeated lines] rsync_bpc: recv_generator: mkdir "/NetworkManager" failed: No such file or directory (2) *** Skipping any contents from this failed directory *** G bpc_path_create: can't create f%2fetc%2f/fX11 (errno 2) G bpc_path_create: can't create f%2fetc%2f/fX11 (errno 2) rsync_bpc: recv_generator: mkdir "/X11/xkb" failed: No such file or directory (2) *** Skipping any contents from this failed directory *** G bpc_path_create: can't create f%2fetc%2f/facpi (errno 2) G bpc_path_create: can't create f%2fetc%2f/facpi (errno 2) rsync_bpc: recv_generator: mkdir "/acpi/events" failed: No such file or directory (2) *** Skipping any contents from this failed directory *** G bpc_fileReadAll: can't open /var/lib/backuppc/cpool/36/16/37170a6409f1fa9cf67d20660b1d0f2d (from alternatives/ALTER_OPERATOR_CLASS.7.gz) rsync_bpc: symlink "/alternatives/ALTER_OPERATOR_CLASS.7.gz" -> "/usr/share/postgresql/13/man/man7/ALTER_OPERATOR_CLASS.7.gz" failed: File exists (17) rsync_bpc: symlink "/alternatives/ALTER_OPERATOR_FAMILY.7.gz" -> "/usr/share/postgresql/13/man/man7/ALTER_OPERATOR_FAMILY.7.gz" failed: File exists (17) G bpc_fileReadAll: can't open /var/lib/backuppc/cpool/e2/48/e34810c68ce29a133fbc30d73c6ad6a0 (from alternatives/ALTER_TABLESPACE.7.gz) [...] All the remote servers i added so far (all debian servers) got several errors and if i try to browse their backups, the web interface tells me they are empty. My main concern is: why the backup with tar method is working and the other with rsync is not? If it was something about the pool filesystem ... should not affect all the backups? Is something about the options i mount the sshfs filesystem? Should I set write syncs? Seeing the log someone could argue user backuppc has no rw access but i can tell you that backuppc created a lot of files and folders in that fs. Thank you in advance. S
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