* Michael Prokop [Mon Jul 07, 2014 at 04:59:47PM +0200]: > apt-get immediately returns with an error if the lock file > (/var/lib/dpkg/lock) can't be locked.
> It would be nice, if apt-get could provide an option for a timeout > option to retry locking the file before actually giving up; similar > to what reprepro(1) is providing with its --waitforlock's option: [...] > It's not uncommon in certain setups that a monitoring check executes > apt-get actions while another script (cron, config management,...) > tries to execute another apt-get action in parallel. Either of them > then sadly fails and causes unneeded overhead. With bad timing as I just had it this might be even an issue during ongoing package installation and in between monitoring checks showing up, causing the installation procedure to fail in the middle: ,---- [ c/p ] | # apt-get install linux-image-amd64 | Reading package lists... Done | Building dependency tree | Reading state information... Done | The following extra packages will be installed: | linux-image-3.14-0.bpo.1-amd64 | Suggested packages: | linux-doc-3.14 debian-kernel-handbook | Recommended packages: | firmware-linux-free | The following NEW packages will be installed: | linux-image-3.14-0.bpo.1-amd64 | The following packages will be upgraded: | linux-image-amd64 | 1 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. | Need to get 30.9 MB of archives. | After this operation, 146 MB of additional disk space will be used. | Do you want to continue [Y/n]? | Get:1 http://debian.[snip]/debian/ wheezy-backports/main linux-image-3.14-0.bpo.1-amd64 amd64 3.14.7-1~bpo70+1 [30.9 MB] | Get:2 http://debian.[snip]/debian/ wheezy-backports/main linux-image-amd64 amd64 3.14+57~bpo70+1 [6,118 B] | Fetched 30.9 MB in 3s (8,814 kB/s) | Preconfiguring packages ... | Selecting previously unselected package linux-image-3.14-0.bpo.1-amd64. | (Reading database ... 46414 files and directories currently installed.) | Unpacking linux-image-3.14-0.bpo.1-amd64 (from .../linux-image-3.14-0.bpo.1-amd64_3.14.7-1~bpo70+1_amd64.deb) ... | Preparing to replace linux-image-amd64 3.2+46 (using .../linux-image-amd64_3.14+57~bpo70+1_amd64.deb) ... | Unpacking replacement linux-image-amd64 ... | dpkg: error: dpkg status database is locked by another process | E: Sub-process /usr/bin/dpkg returned an error code (2) | apt-get install linux-image-amd64 4.40s user 1.24s system 53% cpu 10.481 total `---- regards, -mika-
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