[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Handling iSCSI block devices (Was: Driver domains and device handling)
On 14/12/12 19:26, Ian Jackson wrote: > Roger Pau Monne writes ("Re: Handling iSCSI block devices (Was: Driver > domains and device handling)"): >> * remove: called to disconnect the device. Xenstore backend entries >> exists, and backend state is 6 (XenbusStateClosed). > > I assume we need an unprepare here too. I've also thought that, but the reason for prepare to exist is to reduce the time that the "add" operation takes, thus reducing the blackout phase during migration. There's no such problem in the remove phase, but I guess we need an unprepare in case there's a failure between the prepare and add operations, and we wish to give the hotplug script an opportunity to unwind whatever the prepare operation has done. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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