On Mon, Apr 25, 2016 at 7:49 AM, Umut Tezduyar <u...@tezduyar.com> wrote:
> > > On Apr 25, 2016, at 5:43 AM, Andrei Borzenkov <arvidj...@gmail.com> > wrote: > > > > 24.04.2016 19:24, Renjith Vijayan пишет: > >> Hi All, > >> > >> I am trying to make journal logs persistent across reboots in my > platform. > >> Currently /var/log is mounted on volatile partition in the platform. > >> I have a non-volatile partition mounted at /var/diagnostics. > >> So i made the following change in tmpfile.d service config > >> file(volatile.conf) to create a symlink. > >> > >> L+ /var/log/journal 0666 root root - /var/diagnostics/logs > >> > >> Also, the following changes to make logs persistent is done in > >> journald.conf file. > >> Storage=persistent > >> > >> But still when the system boots up it takes the run time journal path & > no > >> files are present in /var/log/journal directory.. > >> *systemd-journal[114]: Runtime journal is using 8.0M (max allowed > 392.4M, > >> trying to leave 588.6M free of 3.8G available â current limit 392.4M).* > >> *Jan 09 05:18:58 ops-as5712 systemd-journal[114]: Runtime journal is > using > >> 8.0M (max allowed 392.4M, trying to leave 588.6M free of 3.8G available > â > >> current limit 392.4M).* > >> *Jan 09 05:18:58 ops-as5712 systemd-journal[114]: Journal started* > >> *Jan 09 05:18:58 ops-as5712 systemd-journal[114]: Runtime journal is > using > >> 8.0M* > >> > >> After i restart the systemd-journald service, the logs are becoming > >> persistent & getting stored in the permanent partition. > >> > >> Could somebody point out what needs to be done to make it persistent > >> without the restart of systemd-journald service? > > > > Send SIGUSR1 to journald. > There is a service to do that and it is enabled by default. It must have > been disabled for you. It is systemd-journal-flush.service. Actually I'm guessing that it's enabled but runs too soon, since it does not know about the symlinking that's about to happen. It might need to be extended with: [Unit] After=systemd-tmpfiles-setup.service RequiresMountsFor=/var/diagnostics/logs -- Mantas Mikulėnas <graw...@gmail.com>
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