Re: [PATCH] ext3 barrier bits

[Chris Mason]

On Sat, 2004-05-22 at 04:11, Andrew Morton wrote:
> May as well cc lkml on this.  It's to do with the disk write barrier
> implementation.

> - Does reiserfs support `mount -o remount,barrier=flush'? and "=none"?
> 
Yes...there are no messages to clue the user in, but it does happen.

> - How do I test the "oh, barriers aren't working" fallback code in ext3?
> 
Jens suggested mounting with barriers on for scsi, that's what I've been
doing.  I also did some crash tests on scsi to make sure the io really
is happening when barriers fail.

-chris


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