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Re: Problem with mkfs.xfs on a regular file

To: Phil White <cerise-xfs@xxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Problem with mkfs.xfs on a regular file
From: Nathan Scott <nathans@xxxxxxxxxx>
Date: Tue, 26 Nov 2013 21:38:20 -0500 (EST)
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20131127023119.GB13101@boogeyman>
References: <20131127023119.GB13101@boogeyman>
Reply-to: Nathan Scott <nathans@xxxxxxxxxx>
Thread-index: evssV+ZhCMvP4sut1H7YSjcTh1zSxA==
Thread-topic: Problem with mkfs.xfs on a regular file

----- Original Message -----
> ...
> It's trying to read/write 512 bytes at the beginning of the file which seems
> reasonably innocuous.  I double checked the man page which says that under
> 2.6, O_DIRECT writes can be aligned to 512 bytes without a problem.  sbp
> comes
> out with 4096 in blocksize and 512 in sectsize when zero_old_xfs_structures()
> is called and the first error comes up, so I'm at a loss for what's going
> wrong.

The filesystem backing the new /root/image file doesn't support direct I/O?

cheers.

--
Nathan

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