** Description changed:
+ [Impact]
+
+ Rsync crashes when using --delete-missing-args on a file with a missing
+ parent folder.
+
+ Backporting this fix will allow users to delete missing source args when
+ some files in the list have missing parent folders without interruption.
+
+ This is fixed by patching in an upstream commit that allows files with
+ missing parent folders to be handled without aborting.
+
+ [Test Plan]
+
+ # lxc launch images:ubuntu/focal builder
+ # lxc exec builder bash
+ # apt update
+ # apt dist-upgrade
+ # apt install -y rsync
+ # mkdir -p a/1 b/1; echo "/1/2/3" > list
+ # rsync --dry-run --stats -Pav --delete-missing-args --files-from=list a b
+
+ * This should crash with exit code 2 after printing the following:
+
+ building file list ...
+ 0 files...
+ file has vanished: "/root/a/1/2"
+ 2 files to consider
+ ABORTING due to invalid path from sender: 1/2/3
+ rsync error: protocol incompatibility (code 2) at generator.c(1278)
[generator=3.1.3]
+
+ [Where problems could occur]
+
+ Since the remove operation will now continue when files in the list have
+ missing parent folders, other errors and warnings with different
+ behaviors could arise instead.
+
+ A warning that may arise the most often in these situations is the
+ following:
+
+ warning: some files vanished before they could be transferred (code 24)
+ at main.c(1207) [sender=3.1.3]
+
+ This appears at the end of the above test case with the new code. The
+ behavior is expected, but it may cause regressions due to changes in the
+ output of certain use cases.
+
+ [Original Description]
+
Running
rsync --delete-missing-args --files-from=...
fails with error message like
ABORTING due to invalid path from sender: dir1/dir2/dir3
rsync error: protocol incompatibility (code 2) at generator.c(1271)
[generator=3.1.2]
if the listed directories are trying to delete full subtree of files.
According to https://bugzilla.samba.org/show_bug.cgi?id=12569 this has
been fixed in version 3.2.2.
See also: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863334
Could you update the rsync package or backport the fix?
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: rsync 3.1.2-2.1ubuntu1.1
ProcVersionSignature: Ubuntu 5.4.0-47.51~18.04.1-lowlatency 5.4.55
Uname: Linux 5.4.0-47-lowlatency x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CurrentDesktop: MATE
Date: Fri Sep 18 18:27:53 2020
EcryptfsInUse: Yes
InstallationDate: Installed on 2019-01-05 (621 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
SourcePackage: rsync
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/bugs/1896251
Title:
rsync --delete-missing-args fails with "error: protocol
incompatibility"
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