Pawel Jakub Dawidek bb265163b2 From time to time people report space map corruption resulting in panic ... (ss == NULL) on pool import. I had such a panic recently. With current version of ZFS it is still possible to import the pool in readonly mode and backup all the data, but in case it is impossible for some reason add tunable vfs.zfs.space_map_last_hope, which when set to '1' will tell ZFS to remove colliding range and retry. This seems to have worked for me, but I consider it highly risky to use. MFC after: 1 week		2011-12-18 12:27:45 +00:00
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opensolaris	From time to time people report space map corruption resulting in panic	2011-12-18 12:27:45 +00:00