Bug 1256966 - Document the need to regenerate initrd in order to mask files under /usr
Document the need to regenerate initrd in order to mask files under /usr
Product: Fedora
Classification: Fedora
Component: systemd (Show other bugs)
Unspecified Linux
unspecified Severity unspecified
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Assigned To: Jan Synacek
Fedora Extras Quality Assurance
: Reopened
Depends On:
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Reported: 2015-08-25 18:20 EDT by Sergio Durigan Junior
Modified: 2015-09-11 02:43 EDT (History)
7 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-09-11 02:43:27 EDT
Type: Bug
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Description Sergio Durigan Junior 2015-08-25 18:20:05 EDT
[ I am filing this bug here because I do not use github's proprietary javascript/backend, so I cannot file bugs against upstream systemd anymore. ]

I have been trying to disable/mask the file /usr/lib/sysctl.d/50-coredump.conf , shipped by systemd.  To do that, I have created a file with the same name under /etc/sysctl.d, and symlinked it to /dev/null (as instructed on sysctl.d(5)).  However, I see that /proc/sys/kernel/core_pattern still has the same value (even after a reboot).

I am not sure if this fails every file that you try to mask using this scheme, or if it's just for this coredump thing.  Apparently this worked before.

I am running Fedora 22, x86_64

Comment 1 Jan Synacek 2015-08-31 07:27:16 EDT
After you create the masked file, you also have to regenerate the initrd, otherwise only the default configuration (from /usr) stays there and the setting gets propagated to the root filesystem.
Comment 2 Sergio Durigan Junior 2015-08-31 13:08:28 EDT
Thanks for the reply, Jan.  However, I still consider there is room for improvement.  I could not find this information anywhere (is it described on any manual/manpage?), and I do think it is necessary to explicitly mention this nontrivial step of having to regenerate initrd.

I am reopening this bug because of that; I am also changing the title to reflect the new task.
Comment 3 Jan Synacek 2015-09-02 05:42:13 EDT
Merged upstream in https://github.com/systemd/systemd/pull/1118.
Comment 5 Jan Synacek 2015-09-11 02:43:27 EDT
Fixed by https://bodhi.fedoraproject.org/updates/systemd-219-23.fc22

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