[Gluster-users] GlusterFS as virtual machine storage

[Gandalf Corvotempesta]

2017-09-08 13:21 GMT+02:00 Pavel Szalbot <pavel.szalbot at gmail.com>:
> Gandalf, isn't possible server hard-crash too much? I mean if reboot
> reliably kills the VM, there is no doubt network crash or poweroff
> will as well.

IIUP, the only way to keep I/O running is to gracefully exiting glusterfsd.
killall should send signal 15 (SIGTERM) to the process, maybe a bug in
signal management
on gluster side? Because kernel is already telling glusterfsd to exit,
though signal 15 but glusterfsd
seems to handle this in a bad way.

a server hard-crash doesn't send any signal. I think this could be
also similiar to SIGKILL (9)
that can't be catched/ignored software side.

In other words: is this a bug in gluster's signal management (if
SIGKILL is working and SIGTERM no, i'll almost sure this is a bug in
signal management),
a engineering bug (relying only on a graceful exit [but even SIGTERM
should be threthed as graceful exit] to preserve I/O on clients) or
something else ?