Theodore Tso wrote:
On Mon, Mar 30, 2009 at 10:01:16PM +0900, Fernando Luis Vázquez Cao wrote:
Chris, I have just sent patches that attempt to fix both ext3 and
ext4 while also adding a per-device sysfs knob tu disable
write-flushes. A previous version of this patch set added a new
generic mount option but comments from Christoph and others
convinced me to turn it into a per-device tunable. Could you take
a look at the patches?
Fernando, see my comments on those patches. We don't need to issue a
barrier after a call to sync_inode() or ext[34]_force_commit(), since
those functions will issue a barrier for us. It would probably be a
good idea to use blktrace to test and make sure that we have one and
exactly one barrier op issued for each fsync().
I'll give blktrace a spin and check if things are working as expected.
Thanks!
- Fernando
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