SDP-13
Closed
Added support for systemd init mechanism.
Red Hat 7 has replaced SysV init scripts with systemd. Seems like systemd
is controversial in the Linux community on several levels, but regardless, it's
now baked into a popular Linux distro. We should consider supporting it, as
the Perforce-related services can't start on RHEL7 unless we do figure out
how to convert the init scripts to use systemd.
We don't necessarily need to continue supporting automatic restart of the
Perforce service on reboot. It is a conveneicne, but some of the most risk-averse
sites have explicilty avoided having p4d start automatically on reboot. That
is because doing so could potentially make a bad corruption situation worse. For
example, if a kernel panic, sudden power loss, or p4d bug results in database
corruption, it is be best not to start p4d right away anyway, and instead
recover from offline databases and the active journal before restarting.
The SDP p4d_N_init script template implements a safety feature to address
the specific situation of "sudden death" scenarios. If the fast 'p4d -xvU'
check fails, p4d_N_init refuses to restart p4d. That check tests whether any
databases were left open, which you would expect after a suddent death scenario,
but not after a normal 'p4 admin stop'.
Red Hat 7 has replaced SysV init scripts with systemd. Seems like systemd
is controversial in the Linux community on several levels, but regardless, it's
now baked into a popular Linux distro. We should consider supporting it, as
the Perforce-related services can't start on RHEL7 unless we do figure out
how to convert the init scripts to use systemd.
We don't necessarily need to continue supporting automatic restart of the
Perforce service on reboot. It is a conveneicne, but some of the most risk-averse
sites have explicilty avoided having p4d start automatically on reboot. That
is because doing so could potentially make a bad corruption situation worse. For
example, if a kernel panic, sudden power loss, or p4d bug results in database
corruption, it is be best not to start p4d right away anyway, and instead
recover from offline databases and the active journal before restarting.
The SDP p4d_N_init script template implements a safety feature to address
the specific situation of "sudden death" scenarios. If the fast 'p4d -xvU'
check fails, p4d_N_init refuses to restart p4d. That check tests whether any
databases were left open, which you would expect after a suddent death scenario,
but not after a normal 'p4 admin stop'.
- Status
- Closed
- Project
- perforce-software-sdp
- Severity
- B
- Reported By
- C. Thomas Tyler
- Reported Date
- Modified By
- C. Thomas Tyler
- Modified Date
- Dev Notes
- This job, SDP-13, was originally named job000086, and for a time named job000263.
- Type
- Feature