MFV r316920: 8023 Panic destroying a metaslab deferred range tree
illumos/illumos-gate@3991b535a8
3991b535a8
https://www.illumos.org/issues/8023
$C
ffffff0011bc0970 vpanic()
ffffff0011bc0a00 strlog()
ffffff0011bc0a30 range_tree_destroy+0x72(ffffff043769ad00)
ffffff0011bc0a70 metaslab_fini+0xd5(ffffff0449acf380)
ffffff0011bc0ab0 vdev_metaslab_fini+0x56(ffffff0462bae800)
ffffff0011bc0af0 spa_unload+0x9b(ffffff03e3dac000)
ffffff0011bc0b70 spa_export_common+0x115(ffffff047f4b4000, 2, 0, 0, 0)
ffffff0011bc0b90 spa_destroy+0x1d(ffffff047f4b4000)
ffffff0011bc0bd0 zfs_ioc_pool_destroy+0x20(ffffff047f4b4000)
ffffff0011bc0c80 zfsdev_ioctl+0x4d7(11400000000, 5a01, 8040190, 100003,
ffffff03e1956b10, ffffff0011bc0e68)
ffffff0011bc0cc0 cdev_ioctl+0x39(11400000000, 5a01, 8040190, 100003,
ffffff03e1956b10, ffffff0011bc0e68)
ffffff0011bc0d10 spec_ioctl+0x60(ffffff03d9153b00, 5a01, 8040190, 100003,
ffffff03e1956b10, ffffff0011bc0e68, 0)
ffffff0011bc0da0 fop_ioctl+0x55(ffffff03d9153b00, 5a01, 8040190, 100003,
ffffff03e1956b10, ffffff0011bc0e68, 0)
ffffff0011bc0ec0 ioctl+0x9b(3, 5a01, 8040190)
ffffff0011bc0f10 _sys_sysenter_post_swapgs+0x149()
Reviewed by: Brad Lewis <brad.lewis@delphix.com>
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Author: George Wilson <george.wilson@delphix.com>
MFC after: 2 weeks
e1b8f10a5e