XFS Preallocate using ALLOCSP
getsmit at gmail.com
Mon Jun 15 19:18:32 CDT 2009
I wanted to preallocate the file using the ALLOCSP so that the preallocated
space is zeroed out. Hence i used the xfsctl but the problem is that i
cannot execute it as a non-root user. So i tried using fallocate but when
i saw the xfs implementation of kernel it uses the RESVP cmd and since the
unwritten flag is set i am assuming that the performance of writing to the
preallocated space will suffer because of the metadata updates. So is there
a way to preallocate using ALLOCSP as a non-root user or else i would be
required to modify the kernel ??
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