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Status Not under consideration
Workspace Storage Protect Family
Categories Spectrum Protect for Space Management
Created by Guest
Created on Mar 10, 2016

RELATED IDEAS

GPFS+TSM+HSM: staging vs. migration priority

What we are looking for is a configuration based parameter what will
basically break out of the "transparency for the user" mode, and not
perform any further recalling, period, if|when the file system
occupancy is above a certain threshold (98%). We would not mind if
instead gpfs would issue a preemptive "disk full" error message to any user/app/job relying on those files to be recalled, so migration on
demand will have a chance to be performed. What we prefer is to swap precedence, ie, any migration requests would be executed ahead of any recalls, at least until a certain amount of free space on the file system has been cleared.

For a write or create operation ENOSPC would make some sense.
But if the file already exists and I'm just opening for read access I
would be very confused by ENOSPC. How should the system respond: "Sorry, I know about that file, I have it safely stored away in HSM, but it is not available right now. Try again later!"

EAGAIN or EBUSY might be the closest in ordinary language...
But EAGAIN is used when a system call is interrupted and can be retried right away...
So EBUSY?

I'm inclined to think EBUSY would be more appropriate.

Idea priority High

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