Que faire lorsque mandb ne parvient pas à mettre à jour le cache d'index lors de la mise à jour?

Question

J'ai exécuté un dist-upgrade aujourd'hui et voici le résultat:

Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages will be upgraded: gnome-mines libglib2.0-0 libglib2.0-0:i386 libglib2.0-bin libglib2.0-data libglib2.0-dev libglib2.0-doc libspice-server1 qtox 9 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade. Need to get 12.4 MB of archives. After this operation, 4,531 kB disk space will be freed. Do you want to continue? [Y/n] y Get:1 http://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu xenial/main AMD64 gnome-mines AMD64 1:3.20.1-1~ubuntu16.04.1 [2,441 kB] Get:2 http://archive.ubuntu.com/ubuntu xenial-updates/main AMD64 libglib2.0-dev AMD64 2.48.1-1~ubuntu16.04.1 [1,377 kB] Get:3 https://pkg.tox.chat/debian nightly/wily AMD64 qtox AMD64 1.4.0-192-g279225c-1 [4,328 kB] Get:4 http://archive.ubuntu.com/ubuntu xenial-updates/main AMD64 libglib2.0-bin AMD64 2.48.1-1~ubuntu16.04.1 [39.4 kB] Get:5 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 libglib2.0-0 i386 2.48.1-1~ubuntu16.04.1 [1,184 kB] Get:6 http://archive.ubuntu.com/ubuntu xenial-updates/main AMD64 libglib2.0-0 AMD64 2.48.1-1~ubuntu16.04.1 [1,118 kB] Get:7 http://archive.ubuntu.com/ubuntu xenial-updates/main AMD64 libglib2.0-data all 2.48.1-1~ubuntu16.04.1 [132 kB] Get:8 http://archive.ubuntu.com/ubuntu xenial-updates/main AMD64 libglib2.0-doc all 2.48.1-1~ubuntu16.04.1 [1,471 kB] Get:9 http://archive.ubuntu.com/ubuntu xenial-updates/main AMD64 libspice-server1 AMD64 0.12.6-4ubuntu0.1 [338 kB] Fetched 12.4 MB in 15s (783 kB/s) (Reading database ... 242183 files and directories currently installed.) Preparing to unpack .../libglib2.0-data_2.48.1-1~ubuntu16.04.1_all.deb ... Unpacking libglib2.0-data (2.48.1-1~ubuntu16.04.1) over (2.48.0-1ubuntu4) ... Preparing to unpack .../libglib2.0-dev_2.48.1-1~ubuntu16.04.1_AMD64.deb ... Unpacking libglib2.0-dev (2.48.1-1~ubuntu16.04.1) over (2.48.0-1ubuntu4) ... Preparing to unpack .../libglib2.0-bin_2.48.1-1~ubuntu16.04.1_AMD64.deb ... Unpacking libglib2.0-bin (2.48.1-1~ubuntu16.04.1) over (2.48.0-1ubuntu4) ... Preparing to unpack .../libglib2.0-0_2.48.1-1~ubuntu16.04.1_i386.deb ... De-configuring libglib2.0-0:AMD64 (2.48.0-1ubuntu4) ... Unpacking libglib2.0-0:i386 (2.48.1-1~ubuntu16.04.1) over (2.48.0-1ubuntu4) ... Preparing to unpack .../libglib2.0-0_2.48.1-1~ubuntu16.04.1_AMD64.deb ... Unpacking libglib2.0-0:AMD64 (2.48.1-1~ubuntu16.04.1) over (2.48.0-1ubuntu4) ... Preparing to unpack .../gnome-mines_1%3a3.20.1-1~ubuntu16.04.1_AMD64.deb ... Unpacking gnome-mines (1:3.20.1-1~ubuntu16.04.1) over (1:3.20.0-2~ubuntu16.04.1) ... Preparing to unpack .../libglib2.0-doc_2.48.1-1~ubuntu16.04.1_all.deb ... Unpacking libglib2.0-doc (2.48.1-1~ubuntu16.04.1) over (2.48.0-1ubuntu4) ... Preparing to unpack .../libspice-server1_0.12.6-4ubuntu0.1_AMD64.deb ... Unpacking libspice-server1:AMD64 (0.12.6-4ubuntu0.1) over (0.12.6-4) ... Preparing to unpack .../qtox_1.4.0-192-g279225c-1_AMD64.deb ... Unpacking qtox (1.4.0-192-g279225c-1) over (1.4.0-189-gfd2e585-1) ... Processing triggers for man-db (2.7.5-1) ... /usr/bin/mandb: warning: can't update index cache /var/cache/man/index.db: Resource temporarily unavailable Processing triggers for libc-bin (2.23-0ubuntu3) ... Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ... Processing triggers for gnome-menus (3.13.3-6ubuntu3) ... Processing triggers for mime-support (3.59ubuntu1) ... Processing triggers for menu (2.1.47ubuntu1) ... Setting up libglib2.0-data (2.48.1-1~ubuntu16.04.1) ... Setting up libglib2.0-0:AMD64 (2.48.1-1~ubuntu16.04.1) ... Setting up libglib2.0-0:i386 (2.48.1-1~ubuntu16.04.1) ... Setting up libglib2.0-bin (2.48.1-1~ubuntu16.04.1) ... Setting up libglib2.0-dev (2.48.1-1~ubuntu16.04.1) ... Setting up gnome-mines (1:3.20.1-1~ubuntu16.04.1) ... Setting up libglib2.0-doc (2.48.1-1~ubuntu16.04.1) ... Setting up libspice-server1:AMD64 (0.12.6-4ubuntu0.1) ... Setting up qtox (1.4.0-192-g279225c-1) ... Processing triggers for desktop-file-utils (0.22-1ubuntu5) ... Processing triggers for libc-bin (2.23-0ubuntu3) ... Processing triggers for menu (2.1.47ubuntu1) ...

Vous verrez cette erreur se présenter:

Processing triggers for man-db (2.7.5-1) ... /usr/bin/mandb: warning: can't update index cache /var/cache/man/index.db: Resource temporarily unavailable

Existe-t-il un moyen de dire pourquoi cela s’est produit (s’il n’ya pas d’évidence)? Et y a-t-il quelque chose que je peux/dois faire, car cela semble avoir échoué avec la mise à jour du cache d'index man? J'utilise Ubuntu GNOME 16.04 avec GNOME 3.20.

Mise à jour:

L'exécution de Sudo mandb génère:

Purging old database entries in /usr/share/man... Processing manual pages under /usr/share/man... Purging old database entries in /usr/share/man/en_CA... Processing manual pages under /usr/share/man/en_CA... Purging old database entries in /usr/share/man/km... Processing manual pages under /usr/share/man/km... Purging old database entries in /usr/share/man/sr... Processing manual pages under /usr/share/man/sr... Purging old database entries in /usr/share/man/be... Processing manual pages under /usr/share/man/be... Purging old database entries in /usr/share/man/ta... Processing manual pages under /usr/share/man/ta... Purging old database entries in /usr/share/man/ne... Processing manual pages under /usr/share/man/ne... Purging old database entries in /usr/share/man/lt... Processing manual pages under /usr/share/man/lt... Purging old database entries in /usr/share/man/ms... Processing manual pages under /usr/share/man/ms... Purging old database entries in /usr/share/man/hi... Processing manual pages under /usr/share/man/hi... Purging old database entries in /usr/share/man/et... Processing manual pages under /usr/share/man/et... Purging old database entries in /usr/share/man/zh_TW... Processing manual pages under /usr/share/man/zh_TW... Purging old database entries in /usr/share/man/de.UTF-8... Processing manual pages under /usr/share/man/de.UTF-8... Purging old database entries in /usr/share/man/ja... Processing manual pages under /usr/share/man/ja... Purging old database entries in /usr/share/man/tr... Processing manual pages under /usr/share/man/tr... Purging old database entries in /usr/share/man/bg... Processing manual pages under /usr/share/man/bg... Purging old database entries in /usr/share/man/az... Processing manual pages under /usr/share/man/az... Purging old database entries in /usr/share/man/ps... Processing manual pages under /usr/share/man/ps... Purging old database entries in /usr/share/man/pa... Processing manual pages under /usr/share/man/pa... Purging old database entries in /usr/share/man/nl... Processing manual pages under /usr/share/man/nl... Purging old database entries in /usr/share/man/th... Processing manual pages under /usr/share/man/th... Purging old database entries in /usr/share/man/es... Processing manual pages under /usr/share/man/es... Purging old database entries in /usr/share/man/zh_CN... Processing manual pages under /usr/share/man/zh_CN... Purging old database entries in /usr/share/man/da... Processing manual pages under /usr/share/man/da... Purging old database entries in /usr/share/man/pl... Processing manual pages under /usr/share/man/pl... Purging old database entries in /usr/share/man/fi... Processing manual pages under /usr/share/man/fi... Purging old database entries in /usr/share/man/fr... Processing manual pages under /usr/share/man/fr... Purging old database entries in /usr/share/man/fa... Processing manual pages under /usr/share/man/fa... Purging old database entries in /usr/share/man/fy... Processing manual pages under /usr/share/man/fy... Purging old database entries in /usr/share/man/lv... Processing manual pages under /usr/share/man/lv... Purging old database entries in /usr/share/man/en_AU... Processing manual pages under /usr/share/man/en_AU... Purging old database entries in /usr/share/man/cs... Processing manual pages under /usr/share/man/cs... Purging old database entries in /usr/share/man/sk... Processing manual pages under /usr/share/man/sk... Purging old database entries in /usr/share/man/sl... Processing manual pages under /usr/share/man/sl... Purging old database entries in /usr/share/man/gl... Processing manual pages under /usr/share/man/gl... Purging old database entries in /usr/share/man/zh_HK... Processing manual pages under /usr/share/man/zh_HK... Purging old database entries in /usr/share/man/io... Processing manual pages under /usr/share/man/io... Purging old database entries in /usr/share/man/ca... Processing manual pages under /usr/share/man/ca... Purging old database entries in /usr/share/man/he... Processing manual pages under /usr/share/man/he... Purging old database entries in /usr/share/man/pt... Processing manual pages under /usr/share/man/pt... Purging old database entries in /usr/share/man/cy... Processing manual pages under /usr/share/man/cy... Purging old database entries in /usr/share/man/oc... Processing manual pages under /usr/share/man/oc... Purging old database entries in /usr/share/man/bs... Processing manual pages under /usr/share/man/bs... Purging old database entries in /usr/share/man/ro... Processing manual pages under /usr/share/man/ro... Purging old database entries in /usr/share/man/hu... Processing manual pages under /usr/share/man/hu... Purging old database entries in /usr/share/man/ce... Processing manual pages under /usr/share/man/ce... Purging old database entries in /usr/share/man/ja.UTF-8... Processing manual pages under /usr/share/man/ja.UTF-8... Purging old database entries in /usr/share/man/te... Processing manual pages under /usr/share/man/te... Purging old database entries in /usr/share/man/ku... Processing manual pages under /usr/share/man/ku... Purging old database entries in /usr/share/man/kk... Processing manual pages under /usr/share/man/kk... Purging old database entries in /usr/share/man/Gd... Processing manual pages under /usr/share/man/Gd... Purging old database entries in /usr/share/man/id... Processing manual pages under /usr/share/man/id... Purging old database entries in /usr/share/man/eo... Processing manual pages under /usr/share/man/eo... Purging old database entries in /usr/share/man/pt_BR... Processing manual pages under /usr/share/man/pt_BR... Purging old database entries in /usr/share/man/ug... Processing manual pages under /usr/share/man/ug... Purging old database entries in /usr/share/man/it... Processing manual pages under /usr/share/man/it... Purging old database entries in /usr/share/man/ko... Processing manual pages under /usr/share/man/ko... Purging old database entries in /usr/share/man/fr.ISO8859-1... Processing manual pages under /usr/share/man/fr.ISO8859-1... Purging old database entries in /usr/share/man/shn... Processing manual pages under /usr/share/man/shn... Purging old database entries in /usr/share/man/hy... Processing manual pages under /usr/share/man/hy... Purging old database entries in /usr/share/man/mhr... Processing manual pages under /usr/share/man/mhr... Purging old database entries in /usr/share/man/se... Processing manual pages under /usr/share/man/se... Purging old database entries in /usr/share/man/fr.UTF-8... Processing manual pages under /usr/share/man/fr.UTF-8... Purging old database entries in /usr/share/man/de... Processing manual pages under /usr/share/man/de... Purging old database entries in /usr/share/man/ca@valencia... Processing manual pages under /usr/share/man/ca@valencia... Purging old database entries in /usr/share/man/sq... Processing manual pages under /usr/share/man/sq... Purging old database entries in /usr/share/man/nn... Processing manual pages under /usr/share/man/nn... Purging old database entries in /usr/share/man/bo... Processing manual pages under /usr/share/man/bo... Purging old database entries in /usr/share/man/uk... Processing manual pages under /usr/share/man/uk... Purging old database entries in /usr/share/man/eu... Processing manual pages under /usr/share/man/eu... Purging old database entries in /usr/share/man/ar... Processing manual pages under /usr/share/man/ar... Purging old database entries in /usr/share/man/hr... Processing manual pages under /usr/share/man/hr... Purging old database entries in /usr/share/man/vi... Processing manual pages under /usr/share/man/vi... Purging old database entries in /usr/share/man/el... Processing manual pages under /usr/share/man/el... Purging old database entries in /usr/share/man/zh... Processing manual pages under /usr/share/man/zh... Purging old database entries in /usr/share/man/si... Processing manual pages under /usr/share/man/si... Purging old database entries in /usr/share/man/uz... Processing manual pages under /usr/share/man/uz... Purging old database entries in /usr/share/man/fr_CA... Processing manual pages under /usr/share/man/fr_CA... Purging old database entries in /usr/share/man/my... Processing manual pages under /usr/share/man/my... Purging old database entries in /usr/share/man/sv... Processing manual pages under /usr/share/man/sv... Purging old database entries in /usr/share/man/fo... Processing manual pages under /usr/share/man/fo... Purging old database entries in /usr/share/man/nb... Processing manual pages under /usr/share/man/nb... Purging old database entries in /usr/share/man/ml... Processing manual pages under /usr/share/man/ml... Purging old database entries in /usr/share/man/en_GB... Processing manual pages under /usr/share/man/en_GB... Purging old database entries in /usr/share/man/bn... Processing manual pages under /usr/share/man/bn... Purging old database entries in /usr/share/man/ast... Processing manual pages under /usr/share/man/ast... Purging old database entries in /usr/share/man/ru... Processing manual pages under /usr/share/man/ru... Processing manual pages under /usr/local/man... 0 man subdirectories contained newer manual pages. 0 manual pages were added. 0 stray cats were added. 0 old database entries were purged.

andrew.46 · Accepted Answer

Cette erreur indique que plusieurs processus mandb étaient en cours d'exécution simultanément et qu'une partie de la mise à jour du cache a donc échoué. Il est impossible de savoir vraiment quelle partie du processus d'installation a eu 2 appels ou plus sur le cache menant à la défaillance.

Si vous croyez que la base de données de pages de manuel est incomplète , la commande suivante actualisera la base de données:

Sudo mandb

Cette opération révèle le processus d'actualisation au travail:

Purging old database entries in /usr/share/man/fr_CA... Processing manual pages under /usr/share/man/fr_CA... Purging old database entries in /usr/share/man/sq... Processing manual pages under /usr/share/man/sq...

Si toutefois la base de données mandb est devenue corrompue , ce qui est très improbable dans le scénario que vous avez mentionné, vous pouvez essayer d'exécuter la commande plus radicale:

Sudo mandb --create

Dans les pages de manuel de mandb:

-c, --create By default, mandb will try to update any previously created databases. If a database does not exist, it will create it. This option forces mandb to delete previous databases and re- create them from scratch, and implies --no-purge. This may be necessary if a database becomes corrupt or if a new database storage scheme is introduced in the future.

Lorsque vous exécuterez cette commande, vous verrez qu'un développeur fantaisiste a utilisé l'idée de rechercher des chats errants dans le but de recréer et de reconstruire la base de données:

Processing manual pages under /usr/share/man/hr... Updating index cache for path `/usr/share/man/hr/man1'. Wait...done. Checking for stray cats under /usr/share/man/hr... Checking for stray cats under /var/cache/man/hr...

:)

Références: