site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Thread-index: AcpDVe2iX0dD53ooRCOezvRqwWXZ1wD0hRkg Thread-topic: Snow Leopard, filter scheme prevents shutdown (copied from darwin-drivers) I have a filter-scheme driver which is having some problems with snow leopard (10.6.1). I've stripped it down to the bare minimum (basically a transparent pass-through) and the problem still exists. It's not machine dependent - happens on several different systems, but only with snow leopard - tiger and leopard are OK. I've narrowed it down to synchronizeCache(IOService* client) - if I just return success, all is OK. If I forward to the provider, it never returns. The driver matches on 'whole' media, not on content hints (and uses recursion prevention via property). We have external USB and firewire devices, and the filter has active matching - probe() compares the device name. If it helps, I have a stripped-down sample that reproduces the problem. Using an external firewire disk, with 2 units (disks), the shutdown fails every time. We have seen similar results on USB, and with two single-LUN firewire disks, but it's harder to reproduce with those. If I log out, then shutdown from the login window, it's OK. If I format the disks as non-journalled, it's OK - so definitely something to do with cache flushing. If I manually eject just one media before shutting down, it's OK. Help! Thanks, Andy _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... This email sent to site_archiver@lists.apple.com