Your message dated Wed, 05 Feb 2025 15:49:46 +0000
with message-id <e1tfhes-007jn1...@fasolo.debian.org>
and subject line Bug#1095202: fixed in nfs-utils 1:2.8.2-2
has caused the Debian Bug report #1095202,
regarding nfs-common: file loss in upgrade due to /usr-move (DEP17 P1)
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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immediately.)
--
1095202: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1095202
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: nfs-common
Version: 1:2.8.2-2~exp1
Severity: serious
Justification: file loss in upgrade scenario
Tags: patch
User: helm...@debian.org
Usertags: dep17p1
Hi Salvatore,
thanks for raising nfs-common ahead of upload and going via
experimental. Indeed, dumat flags
/usr/lib/systemd/system/nfs-blkmap.service as a file possibly lost in an
upgrade. To experience this loss, you should install nfs-kernel-server
from bookworm and then unpack nfs-common from experimental before
upgrading nfs-kernel-server.
I am proposing a composite mitigation. Upgrading Breaks+Replaces to
Conflicts mostly prevents concurrent unpacks except in rare
circumstances. Indeed, my testing reveals that this causes apt to
upgrade nfs-kernel-server before nfs-common in one of the relevant
scenarios. Rarely, dpkg may unpack nfs-common before nfs-kernel-server
despite the declared conflict. In this situation, a protective diversion
will prevent the file loss.
I am attaching a patch and my test cases for your convenience. If you
replace the package version with the one from the archive, you should
see it fail.
Helmut
diff --minimal -Nru nfs-utils-2.8.2/debian/changelog
nfs-utils-2.8.2/debian/changelog
--- nfs-utils-2.8.2/debian/changelog 2025-02-03 18:47:52.000000000 +0100
+++ nfs-utils-2.8.2/debian/changelog 2025-02-04 21:19:43.000000000 +0100
@@ -1,3 +1,11 @@
+nfs-utils (1:2.8.2-2~exp1.1) UNRELEASED; urgency=medium
+
+ * Non-maintainer upload.
+ * Mitigate file loss in concurrent canonicalization and move between
+ packages. (DEP17 P1 M8, Closes: #-1)
+
+ -- Helmut Grohne <hel...@subdivi.de> Tue, 04 Feb 2025 21:19:43 +0100
+
nfs-utils (1:2.8.2-2~exp1) experimental; urgency=medium
* Move nfs-blkmap.service to nfs-common package.
diff --minimal -Nru nfs-utils-2.8.2/debian/control
nfs-utils-2.8.2/debian/control
--- nfs-utils-2.8.2/debian/control 2025-02-03 18:47:52.000000000 +0100
+++ nfs-utils-2.8.2/debian/control 2025-02-04 21:19:38.000000000 +0100
@@ -37,9 +37,8 @@
Recommends: python3
Suggests: open-iscsi, watchdog
Provides: nfs-client
-Conflicts: nfs-client
-Replaces: nfs-client, nfs-kernel-server (<< 1:2.8.2-2~exp1~)
-Breaks: nfs-kernel-server (<< 1:2.8.2-2~exp1~)
+Conflicts: nfs-client, nfs-kernel-server (<< 1:2.8.2-2~exp1~)
+Replaces: nfs-client
Description: NFS support files common to client and server
Use this package on any machine that uses NFS, either as client or
server. Programs included: lockd, statd, showmount, nfsstat, gssd,
diff --minimal -Nru nfs-utils-2.8.2/debian/nfs-common.lintian-overrides
nfs-utils-2.8.2/debian/nfs-common.lintian-overrides
--- nfs-utils-2.8.2/debian/nfs-common.lintian-overrides 2025-02-03
18:47:52.000000000 +0100
+++ nfs-utils-2.8.2/debian/nfs-common.lintian-overrides 2025-02-04
21:19:43.000000000 +0100
@@ -3,3 +3,8 @@
# lintian doesn't notice that
nfs-common: no-manual-page [usr/sbin/mount.nfs4]
nfs-common: no-manual-page [usr/sbin/umount.nfs4]
+# begin-remove-after: released:trixie
+# DEP17 P1 M8: Protective diversion for moved file
+nfs-common: diversion-for-unknown-file lib/systemd/system/nfs-blkmap.service
[preinst:*]
+nfs-common: systemd-diversion lib/systemd/system/nfs-blkmap.service [preinst:*]
+# end-remove-after: released:trixie
diff --minimal -Nru nfs-utils-2.8.2/debian/nfs-common.postinst
nfs-utils-2.8.2/debian/nfs-common.postinst
--- nfs-utils-2.8.2/debian/nfs-common.postinst 2025-02-03 18:47:52.000000000
+0100
+++ nfs-utils-2.8.2/debian/nfs-common.postinst 2025-02-04 21:19:43.000000000
+0100
@@ -4,6 +4,13 @@
case "$1" in
configure)
+ # begin-remove-after: released:trixie
+ # DEP17 P1 M8: Protective diversion for moved file
+ if dpkg --compare-versions "$2" lt 1:2.8.2-2~exp1~; then
+ dpkg-divert --remove --no-rename --divert
/lib/systemd/system/nfs-blkmap.service.usr-is-merged
/lib/systemd/system/nfs-blkmap.service
+ fi
+
+ # end-remove-after: released:trixie
ucf --three-way /usr/share/nfs-common/conffiles/idmapd.conf
/etc/idmapd.conf
ucf --three-way /usr/share/nfs-common/conffiles/nfs-common.default
/etc/default/nfs-common
ucf --three-way /usr/share/nfs-common/conffiles/nfs.conf /etc/nfs.conf
diff --minimal -Nru nfs-utils-2.8.2/debian/nfs-common.postrm
nfs-utils-2.8.2/debian/nfs-common.postrm
--- nfs-utils-2.8.2/debian/nfs-common.postrm 2025-02-03 18:47:52.000000000
+0100
+++ nfs-utils-2.8.2/debian/nfs-common.postrm 2025-02-04 21:19:43.000000000
+0100
@@ -24,4 +24,12 @@
dpkg-statoverride --remove /sbin/mount.nfs || true
;;
+ # begin-remove-after: released:trixie
+ abort-upgrade)
+ # DEP17 P1 M8: Protective diversion for moved file
+ if dpkg --compare-versions "$2" lt 1:2.8.2-2~exp1~; then
+ dpkg-divert --remove --no-rename --divert
/lib/systemd/system/nfs-blkmap.service.usr-is-merged
/lib/systemd/system/nfs-blkmap.service
+ fi
+ ;;
+ # end-remove-after: released:trixie
esac
diff --minimal -Nru nfs-utils-2.8.2/debian/nfs-common.preinst
nfs-utils-2.8.2/debian/nfs-common.preinst
--- nfs-utils-2.8.2/debian/nfs-common.preinst 2025-02-03 18:47:52.000000000
+0100
+++ nfs-utils-2.8.2/debian/nfs-common.preinst 2025-02-04 21:19:43.000000000
+0100
@@ -12,4 +12,11 @@
fi
fi
+# begin-remove-after: released:trixie
+# DEP17 P1 M8: Protective diversion for moved file
+if [ "$1" = install ] || { [ "$1" = upgrade ] && dpkg --compare-versions "$2"
lt 1:2.8.2-2~exp1~; }; then
+ dpkg-divert --add --no-rename --divert
/lib/systemd/system/nfs-blkmap.service.usr-is-merged
/lib/systemd/system/nfs-blkmap.service
+fi
+# end-remove-after: released:trixie
+
#DEBHELPER#
test.sh
Description: Bourne shell script
--- End Message ---
--- Begin Message ---
Source: nfs-utils
Source-Version: 1:2.8.2-2
Done: Salvatore Bonaccorso <car...@debian.org>
We believe that the bug you reported is fixed in the latest version of
nfs-utils, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 1095...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Salvatore Bonaccorso <car...@debian.org> (supplier of updated nfs-utils package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmas...@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Wed, 05 Feb 2025 16:35:13 +0100
Source: nfs-utils
Architecture: source
Version: 1:2.8.2-2
Distribution: unstable
Urgency: medium
Maintainer: Debian kernel team <debian-kernel@lists.debian.org>
Changed-By: Salvatore Bonaccorso <car...@debian.org>
Closes: 1072611 1095202
Changes:
nfs-utils (1:2.8.2-2) unstable; urgency=medium
.
[ Helmut Grohne ]
* Mitigate file loss in concurrent canonicalization and move between
packages. (DEP17 P1 M8, Closes: #1095202)
.
[ Salvatore Bonaccorso ]
* Upload to unstable
.
nfs-utils (1:2.8.2-2~exp1) experimental; urgency=medium
.
* Move nfs-blkmap.service to nfs-common package.
Add Replaces and Breaks relation for nfs-common package on the
nfs-kernel-server package with (<< 1:2.8.2-2~exp1~) constraints to
properly take over the nfs-blkmap.service service file.
(Closes: #1072611)
* debian/control: Remove Steve Langasek from Uploaders
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