Messages in this thread | | | Subject | Re: high iowait problem(Bug 12309 on bugzilla.kernel.org) | From | "Martin K. Petersen" <> | Date | Wed, 14 Apr 2010 10:25:08 -0400 |
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>>>>> "Andrew" == Andrew Morton <akpm@linux-foundation.org> writes:
Andrew> I'm seeing just one device-mapper change whcih went in over that Andrew> timeframe:
Andrew> : commit e0f5cfa7c18b411634e73923841eccd3a4c0ce7f Andrew> : Author: Martin K. Petersen <martin.petersen@oracle.com> Andrew> : Date: Mon Jan 11 03:21:50 2010 -0500 Andrew> : Andrew> : DM: Fix device mapper topology stacking
The topology changes do not modify anything in our runtime I/O path. They only come into play during filesystem or logical volume creation on top of devices that support reporting alignment/physical block size. And you need recent dm and filesystem utilities for that to work.
-- Martin K. Petersen Oracle Linux Engineering
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