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Zero filled files

To: linux-xfs@xxxxxxxxxxx
Subject: Zero filled files
From: Axel Thimm <Axel.Thimm@xxxxxxxxxxxxxxxxxxx>
Date: Mon, 12 May 2003 12:23:38 +0200
Sender: linux-xfs-bounce@xxxxxxxxxxx
User-agent: Mutt/1.4.1i
I know about XFS's zeroing of files for such files that were still marked as
dirty when the crash occured. I wonder about two things:

o Why are 15-20 minutes old files also wiped out? Are the write-backs that
  much delayed (even if there is not other FS/CPU load)?

o What is the best way to find these files (why aren't their names simply
  dumped to the kernel logs)? Something like

  find . -xdev -type f \! -empty | xargs <grep for non-zero character here>

  What's the best expression for the last part?

(Red Hat 8.0 & XFS 1.2)

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