Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Fri, Feb 11, 2011 at 02:16:06AM -0800, ionral wrote: > > >Do not use "no-disk-drain", unless you are absolutely sure that nothing > >in the IO stack below DRBD could possibly reorder writes. > > in my case I really think so or not?? > > I have this situation: > > sda -> drbd0 -> pv -> vg -> lv (virtual disks for virtual machine) actually it is sda -> linux block layer elevator -> drbd, so there is reordering involved there. and depending on what exactly sda is (some external raid box?) there may very well be reordering there, too. So, no. Just don't. -- : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. __ please don't Cc me, but send to list -- I'm subscribed