Public bug reported:
**Problem**
$ rsync root@focal-system:/etc/.pwd.lock .
ERROR: .pwd.lock failed verification -- update discarded.
rsync error: some files/attrs were not transferred (see previous errors)
(code 23) at main.c(1816) [generator=3.2.3]
$ rsync root@focal-system:/etc/.pwd.lock . --debug=all
opening connection using: ssh -l root focal-system rsync --server --sender \
-e.LsfxCIvu . /etc/.pwd.lock (10 args)
(Client) Protocol versions: remote=31, negotiated=31
Client negotiated checksum: xxh128
...
**Cause**
focal-system# dpkg -l | grep -E 'libxxhash|rsync'
ii libxxhash0:amd64 0.7.3-1 amd64
ii rsync 3.2.3-2ubuntu1 amd64
**Why this affects only us and not more people?**
On Ubuntu/Focal, there is no rsync 3.2.3, only 3.1.3-8. But because we
need the lz4 compression support we've fetched a newer rsync (from
Groovy).
However: the rsync 3.2.3 depends on libxxhash0 0.7.1+, while in fact it
needs 0.8+.
**Details**
On a Ubuntu/Focal system we have installed a rsync 3.2.3 package from
Ubuntu/Groovy because we need the lz4 compression support.
focal-system# apt-cache show rsync
Package: rsync
...
Version: 3.2.3-2ubuntu1
Depends: lsb-base, libacl1 (>= 2.2.23), libc6 (>= 2.15),
liblz4-1 (>= 0.0~r130), libpopt0 (>= 1.14), libssl1.1 (>= 1.1.0),
libxxhash0 (>= 0.7.1), libzstd1 (>= 1.3.8), zlib1g (>= 1:1.1.4)
...
Alongside this we had libxxhash0 0.7.3-1 from Focal:
focal-system# apt-cache policy libxxhash0
libxxhash0:
Installed: 0.7.3-1
Candidate: 0.7.3-1
Version table:
*** 0.7.3-1 500
500 http://ARCHIVE/ubuntu focal/universe amd64 Packages
100 /var/lib/dpkg/status
According to the dependencies, this should work. But the combination does not,
as this quote from the rsync maintainer would tell you:
https://github.com/WayneD/rsync/issues/122#issuecomment-737690913
> Yeah, Cyan4973 could have told you that the 128-bit xxhash only
> just stabilized in its 0.8.0 release, so anything older than
> that isn't compatible.
**The fix**
As the maintainer points out, version 0.7 is not stable (= broken for
our intents and purposes) and thus not fit for use with rsync 3.2.
I would argue that it's a good idea to bump the dependency of rsync
3.2.3 on Groovy to libxxhash0>=0.8
After all, in Groovy there is a libxxhash0 0.8.0-1ubuntu1.20.10.1, so
that would not be a problem. And it would fix issues for those mixing
and matching packages.
Thanks!
Walter Doekes
OSSO B.V.
(*) possible patch:
$ diff -pu debian/control{.orig,}
--- debian/control.orig 2021-07-08 09:56:57.646861644 +0200
+++ debian/control 2021-07-08 09:57:38.499029903 +0200
@@ -8,7 +8,7 @@ Build-Depends: debhelper-compat (= 13),
libacl1-dev,
libpopt-dev,
liblz4-dev,
- libxxhash-dev,
+ libxxhash-dev (>= 0.8),
libzstd-dev,
zlib1g-dev,
libssl-dev
** Affects: rsync (Ubuntu)
Importance: Undecided
Status: New
--
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https://bugs.launchpad.net/bugs/1934992
Title:
rsync 3.2.x in Groovy depends on broken libxxhash 0.7.x
Status in rsync package in Ubuntu:
New
Bug description:
**Problem**
$ rsync root@focal-system:/etc/.pwd.lock .
ERROR: .pwd.lock failed verification -- update discarded.
rsync error: some files/attrs were not transferred (see previous errors)
(code 23) at main.c(1816) [generator=3.2.3]
$ rsync root@focal-system:/etc/.pwd.lock . --debug=all
opening connection using: ssh -l root focal-system rsync --server --sender \
-e.LsfxCIvu . /etc/.pwd.lock (10 args)
(Client) Protocol versions: remote=31, negotiated=31
Client negotiated checksum: xxh128
...
**Cause**
focal-system# dpkg -l | grep -E 'libxxhash|rsync'
ii libxxhash0:amd64 0.7.3-1 amd64
ii rsync 3.2.3-2ubuntu1 amd64
**Why this affects only us and not more people?**
On Ubuntu/Focal, there is no rsync 3.2.3, only 3.1.3-8. But because we
need the lz4 compression support we've fetched a newer rsync (from
Groovy).
However: the rsync 3.2.3 depends on libxxhash0 0.7.1+, while in fact
it needs 0.8+.
**Details**
On a Ubuntu/Focal system we have installed a rsync 3.2.3 package from
Ubuntu/Groovy because we need the lz4 compression support.
focal-system# apt-cache show rsync
Package: rsync
...
Version: 3.2.3-2ubuntu1
Depends: lsb-base, libacl1 (>= 2.2.23), libc6 (>= 2.15),
liblz4-1 (>= 0.0~r130), libpopt0 (>= 1.14), libssl1.1 (>= 1.1.0),
libxxhash0 (>= 0.7.1), libzstd1 (>= 1.3.8), zlib1g (>= 1:1.1.4)
...
Alongside this we had libxxhash0 0.7.3-1 from Focal:
focal-system# apt-cache policy libxxhash0
libxxhash0:
Installed: 0.7.3-1
Candidate: 0.7.3-1
Version table:
*** 0.7.3-1 500
500 http://ARCHIVE/ubuntu focal/universe amd64 Packages
100 /var/lib/dpkg/status
According to the dependencies, this should work. But the combination does
not, as this quote from the rsync maintainer would tell you:
https://github.com/WayneD/rsync/issues/122#issuecomment-737690913
> Yeah, Cyan4973 could have told you that the 128-bit xxhash only
> just stabilized in its 0.8.0 release, so anything older than
> that isn't compatible.
**The fix**
As the maintainer points out, version 0.7 is not stable (= broken for
our intents and purposes) and thus not fit for use with rsync 3.2.
I would argue that it's a good idea to bump the dependency of rsync
3.2.3 on Groovy to libxxhash0>=0.8
After all, in Groovy there is a libxxhash0 0.8.0-1ubuntu1.20.10.1, so
that would not be a problem. And it would fix issues for those mixing
and matching packages.
Thanks!
Walter Doekes
OSSO B.V.
(*) possible patch:
$ diff -pu debian/control{.orig,}
--- debian/control.orig 2021-07-08 09:56:57.646861644 +0200
+++ debian/control 2021-07-08 09:57:38.499029903 +0200
@@ -8,7 +8,7 @@ Build-Depends: debhelper-compat (= 13),
libacl1-dev,
libpopt-dev,
liblz4-dev,
- libxxhash-dev,
+ libxxhash-dev (>= 0.8),
libzstd-dev,
zlib1g-dev,
libssl-dev
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/rsync/+bug/1934992/+subscriptions
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