On Mon, 15 Oct 2018 18:28:03 -0500, Eric W. Biederman said: > Enke Chen <enkechen@xxxxxxxxx> writes: > > > For simplicity and consistency, this patch provides an implementation > > for signal-based fault notification prior to the coredump of a child > > process. A new prctl command, PR_SET_PREDUMP_SIG, is defined that can > > be used by an application to express its interest and to specify the > > signal (SIGCHLD or SIGUSR1 or SIGUSR2) for such a notification. A new > > signal code (si_code), CLD_PREDUMP, is also defined for SIGCHLD. > > > > Background: > > > > As the coredump of a process may take time, in certain time-sensitive > > applications it is necessary for a parent process (e.g., a process > > manager) to be notified of a child's imminent death before the coredump > > so that the parent process can act sooner, such as re-spawning an > > application process, or initiating a control-plane fail-over. > > You talk about time senstive and then you talk about bash scripts. > I don't think your definition of time-sensitive and my definition match. When the process image is measured in hundreds of gigabytes, the corefile can take a while even by /bin/bash standards. You want fun, watch an HPC process manage to OOM a machine with 3T of RAM in a way that produces a full image coredump. To network storage.
Attachment:
pgpJZniPIl95w.pgp
Description: PGP signature
