Opened 15 years ago

Closed 8 years ago

#5967 closed enhancement (fixed)

use posix_fallocate() for preallocated hard disks when possible

Reported by: bjacke Owned by:
Component: other Version: VirtualBox 3.1.2
Keywords: Cc:
Guest type: other Host type: other


when creating a new hard disk it would be good if preallocated (fixes size) hard disks would be created via posix_fallocate when that call is availbale. On recent Linux systems this call will allocate the whole space very fast and efficiently when XFS or ext4 is being used as filesystem.

Change History (3)

comment:1 by bjacke, 12 years ago

ping. creating preallocated images ist still a pain. Why don't you make use of the filesystem doing that work efficiently in less than a second? Would also be a trivial change to do.

comment:2 by Donuts, 12 years ago

Yep, this feature should be trivial to implement and would be a huge time-saver when creating non-expanding VDIs. Even creating a small 10GB VDI on a USB 2.0 hard drive takes several minutes. Using fallocate() it would be almost instantaneous.

comment:3 by Frank Mehnert, 8 years ago

Resolution: fixed
Status: newclosed

Implemented in VirtualBox 5.1.

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