On 2017-11-03 04:40, infos+backu...@ba-cst.net wrote:
On 31/10/17 14:44, Jenkins, Wade William wrote:
What kind of failure are you seeing? What method are you using?

In the client bpc log, we have

- incr backup started for directory racine
- Got fatal error during xfer (rsync error: error in rsync protocol data
stream (code 12) at io.c(1556) [receiver=3.0.9.3])
- Backup aborted (rsync error: error in rsync protocol data stream (code
12) at io.c(1556) [receiver=3.0.9.3])

In the server's syslog, it's

kernel: [566863.920163] rsync_bpc[6209]: segfault at 7f6b29599e28 ip
000000000044ad0d sp 00007ffdb7b005c0 error 4 in rsync_bpc[400000+74000]

That sounds similar to the problem that I’ve been having since March that I can’t seem to sort out. I’m using rsync backups, but trying tar backups has run into the same issue. My backups will hang, seemingly indefinitely—I’ve had a backup sit unmoving for 7 days before. Sometimes, killing that backup and running a new full will give me a reprieve. But I’ve not been able to find or fix the underlying cause to this point.
On 31/10/17 18:01, Michael Stowe wrote:
Well, yes. rsync 3.1.x has a bug which might be directly affecting your transfer, and sounds related to your use case:

https://u2182357.ct.sendgrid.net/wf/click?upn=rBK8reUlX8Sxr7Iz1fV-2F7cLPoeBV4fOdLf9yHXzdtaUlQr1SMje3Vyc54M-2BaQOv1npeWL3R2yAXh23Gynj2D-2Fw-3D-3D_OypFYCWzG5ApGW-2FFpGTxc4RCS9eud0Dl1htN5rYoUZ8To4zeNUFBkAGI3hzer91CCseQKZkmdXms9wDpB15ATwvqwlBC3iXHybKz5CErzOHNFaLJkpmEuAiHmUWdQXLV1lhO9sKiMRHcAA9k-2BIindHGZ8wUAv9Dd392Mh8rbGJIoA4fInHAtQdmP8B4bxVZl5wbkRMsT3xG5tJvM6DrbLRxoY7IgoXGGV05ZDj5TLdpQtBrRabCMMcEKQWpa9ofU

If this is the case, either upgrading (or downgrading) should take care of the issue.

It's not a process hanging, just plain crashing (which may come from the
same bug or not). Since it's rsync_bpc that goes over the cliff, it may
not be related to an rsync bug.

A crash like that is probably not the same bug, sorry for misunderstanding. For the record, that bug manifests itself only as an apparent hang (though rsync does seem to spend its time re-reading the same files.)
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