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From: Smit Shah <getsmit@gmail.com>
To: linux-xfs@oss.sgi.com
Subject: XFS Preallocate using ALLOCSP
Date: Mon, 15 Jun 2009 17:18:32 -0700 (PDT)	[thread overview]
Message-ID: <24042506.post@talk.nabble.com> (raw)


Hi, 

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 ??

TIA, 
Smit 
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             reply	other threads:[~2009-06-16  0:18 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-16  0:18 Smit Shah [this message]
2009-06-16  2:00 ` XFS Preallocate using ALLOCSP Smit Shah
2009-06-16  3:34 ` Eric Sandeen
2009-06-16  6:44   ` Smit Shah
2009-06-16  7:34     ` Smit Shah
2009-06-16 15:16     ` Eric Sandeen
2009-06-16 16:42       ` Felix Blyakher
2009-06-16 17:28         ` Smit Shah
2009-06-16 17:32           ` Eric Sandeen
2009-06-16 21:38             ` Smit Shah
2009-06-17  1:04               ` Michael Monnerie
2009-06-16 17:41           ` Felix Blyakher
2009-06-16 21:42             ` Smit Shah
2009-06-16 22:05               ` Eric Sandeen
2009-06-16 22:32                 ` Felix Blyakher
2009-06-16 22:19               ` Smit Shah
2009-06-16 22:26               ` Felix Blyakher

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