5244 zio pipeline callers should explicitly invoke next stage Reviewed by: Adam Leventhal <ahl@delphix.com> Reviewed by: Alex Reece <alex.reece@delphix.com> Reviewed by: Christopher Siden <christopher.siden@delphix.com> Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed by: Richard Elling <richard.elling@gmail.com> Reviewed by: Dan McDonald <danmcd@omniti.com> Reviewed by: Steven Hartland <killing@multiplay.co.uk> Approved by: Gordon Ross <gwr@nexenta.com>

1557 assertion failed in userland taskq_destroy() Reviewed by: Richard Lowe <richlowe@richlowe.net> Reviewed by: George Wilson <gwilson@zfsmail.com> Approved by: Eric Schrock <eric.schrock@delphix.com>

734 taskq_dispatch_prealloc() desired 943 zio_interrupt ends up calling taskq_dispatch with TQ_SLEEP Reviewed by: Albert Lee <trisk@nexenta.com> Reviewed by: Richard Lowe <richlowe@richlowe.net> Reviewed by: Alexey Zaytsev <alexey.zaytsev@nexenta.com> Reviewed by: Jason Brian King <jason.brian.king@gmail.com> Reviewed by: George Wilson <gwilson@zfsmail.com> Reviewed by: Adam Leventhal <ahl@delphix.com> Approved by: Gordon Ross <gwr@nexenta.com>

6900839 taskq_ent_alloc: TQ_SLEEP performance cliff when tq_nalloc > tq_maxalloc 6928985 taskq filled with taskq_bucket_extend calls will not help 6928184 Anago: On takeover, one node fails to rejoin cluster, appliance kit won't start on the other node

6881015 ZFS write activity prevents other threads from running in a timely manner 6899867 mstate_thread_onproc_time() doesn't account for runnable time correctly PSARC/2009/615 System Duty Cycle Scheduling Class and ZFS IO Observability

6650218 Commit callbacks API for the DMU 6747932 Add a ZAP API to move a ZAP cursor to a given key. 6856020 ztest keeps creating and doesn't destroy threads

6586537 async zio taskqs can block out userland commands

6333409 traversal code should be able to issue multiple reads in parallel 6418042 want traversal in depth-first pre-order for quicker 'zfs send' 6757112 zvol dump code is extra complicated 6725668 want ::zfs_blkstats to show block type stats after scrub 6725675 dmu traverse code has extraneous features 6725680 P2CROSS is confusing to use 6725698 zvol dump device should always be 128k 6729696 sync causes scrub or resilver to pause for up to 30s 6730101 online recv can cause scrub to miss some blocks 6752226 assertion failed in dbuf_verify: db->db.db_size >= dn->dn_datablksz 6577985 panic when zfs send a snapshot with i/o errors 6755042 zdb -Lbc counts block several times in case of checksum errors

6584470 zdb needs to initialize the bpl_lock mutex 6583739 libzpool should check for properly initialized mutexes 6548010 unbalanced mutex_init/mutex_destroy issues in zfs 6502263 ZFS needs some more FreeBSD porting love Contributed by Pawel Dawidek 6576827 multiple calls to spa_activate() can end up reinitializing all its mutexes 6576830 certain spa mutexes and condition variables need some love

PSARC 2002/240 ZFS 6338653 Integrate ZFS PSARC 2004/652 - DKIOCFLUSH 5096886 Write caching disks need mechanism to flush cache to physical media