[torqueusers] BLCR changes to be put in Torque 2.5.3
ataufer at adaptivecomputing.com
Tue Oct 5 13:40:03 MDT 2010
We would like to put the following changes into the Torque 2.5.3 release.
1) Add --with-servchkptdir configure option which allows specifying a different path for the servers checkpoint files. To do this we need to change the current behaviour on the pbs_mom. Currently, when the pbs_mom creates checkpoint images in the default location it creates them in a subdirectory based on job ID (ie. 200216.molo.CK). But when the job has a checkpoint_dir specified then the checkpoint images are created directly in the checkpoint_dir path without any job ID subdirectory. The pbs_mom will now always create checkpoint images in a Job ID subdirectory.
2) Change so all checkpoint file transfers occur as the user instead of as root. This also changes the permissions on the $TORQUEHOME/checkpoint directory to be world writable with the sticky bit set.
There have been a few requests to have the pbs_mom invoke the restart_script as the user instead of as root, which is how it currently works. We don't think this is needed since the restart_script in the /contrib/blcr directory already runs the actual cr_restart command as the user so there should not be any access issues due to filesystems with root squash turned on.
Please let me know if you have any concerns.
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