diff options
| author | Lennart Poettering <lennart@poettering.net> | 2014-12-30 20:57:53 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-01-05 01:40:51 +0100 |
| commit | fa6ac76083b8ffc1309876459f54f9f0e2843731 (patch) | |
| tree | 5169233d54825b07e63da5d11fbc3b4e248aa38b /src/journal/journald.c | |
| parent | f93bf4363395018ef48d744c4624158623afd693 (diff) | |
journald: process SIGBUS for the memory maps we set up
Even though we use fallocate() it appears that file systems like btrfs
will trigger SIGBUS on certain low-disk-space situation. We should
handle that, hence catch the signal, add it to a list of invalidated
pages, and replace the page with an empty memory area. After each write
check if SIGBUS was triggered, and consider the write invalid if it was.
This should make journald a lot more robust with file systems where
fallocate() is not reliable, for example all CoW file systems
(btrfs...), where changing written data can fail with disk full errors.
https://bugzilla.redhat.com/show_bug.cgi?id=1045810
Diffstat (limited to 'src/journal/journald.c')
| -rw-r--r-- | src/journal/journald.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/journal/journald.c b/src/journal/journald.c index 604c8617b..80f4634f6 100644 --- a/src/journal/journald.c +++ b/src/journal/journald.c @@ -33,6 +33,8 @@ #include "journald-kmsg.h" #include "journald-syslog.h" +#include "sigbus.h" + int main(int argc, char *argv[]) { Server server; int r; @@ -49,6 +51,8 @@ int main(int argc, char *argv[]) { umask(0022); + sigbus_install(); + r = server_init(&server); if (r < 0) goto finish; |