On Thu, Mar 31, 2005 at 03:52:11PM -0800, Nicholas A. Bellinger wrote: > > ... > > IO never goes back across iSCSI Channel 20. I also noticed that this > does not occur every time iSCSI Channel 20 is paused. Sometimes IO will > stop over iSCSI Channel 21 as well, but iSCSI Channel 20 can be started > and IO resumes correctly to both iSCSI Channels. > > So my main question is this, once the iSCSI Channel is restarted and IO > is allowed to flow again, how does dm-multipath know that the device is > unlocked and online? > It's userspace responsability to maintain the device map. In the current available implementation, multipathd does the path checking and reinstate offline paths when they come back up. Regards, cvaroqui
