Computer system and garbage collection method of disk space

Details Computer system and garbage collection method of disk space Computer system and garbage collection method of disk space

2011-04-12

2011-04-12

Peugh, Brian R (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

Reexamination Certificate

active

07925846

ABSTRACT:
A processor of a management computer acquires the free disk space amount of a disk pool, acquires the invalid disk space amount from a plurality of host computers, determines a host computer to which the instruction for the physical disk space collection is issued on the basis of the invalid disk space amount, and judges that the free disk space amount is smaller than a predetermined threshold value before transmitting a GC control request to the determined host computer; another processor generates and transmits invalid disk space position information indicating the position of the invalid disk space in a virtual volume in cases where a host investigation request is received; and the other processor collects the physical disk space of a physical disk allocated to the storage disk space of the virtual volume in the disk pool.

REFERENCES:
patent: 7340571 (2008-03-01), Saze
patent: 2006/0053250 (2006-03-01), Saze
patent: 2006/0242382 (2006-10-01), Griess et al.
patent: 2007/0255925 (2007-11-01), Serizawa et al.

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