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[Qemu-devel] Re: Notes on block I/O data integrity

From: Javier Guerra
Subject: [Qemu-devel] Re: Notes on block I/O data integrity
Date: Tue, 25 Aug 2009 14:33:30 -0500

On Tue, Aug 25, 2009 at 1:11 PM, Christoph Hellwig<address@hidden> wrote:
>  - barrier requests and cache flushes are supported by all local
>   disk filesystem in popular use (btrfs, ext3, ext4, reiserfs, XFS).
>   However unlike the other filesystems ext3 does _NOT_ enable barriers
>   and cache flush requests by default.

what about LVM? iv'e read somewhere that it used to just eat barriers
used by XFS, making it less safe than simple partitions.


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