OpenZFS_on_OS_X_1.9.3.dmg 2019-10-30 fails to install on OSX 10.11 El Capitan

[kneutron]

--2008 24-inch iMac, Core 2 Duo with 6GB RAM - booting/running from external Samsung T5

--Did ' zpool export -a ' as root and verified no zfs were still mounted

--Tried running El Capitan package twice, fails with unknown error

dmesg|grep ZFS

ZFS: Loaded module v1.9.2-0, ZFS pool version 5000, ZFS filesystem version 5 ZFS filesystem version: 5 ZFS: arc_reclaim_thread, (old_)to_free has returned to zero from 16179200 ZFS: arc_reclaim_thread, (old_)to_free has returned to zero from 13803520 hfs: mounted OpenZFS on OS X 1.9.3 on device disk3s1 ZFS: Attempting to unload ... ZFS: Unloaded module v1.9.2-0 ZFS: Unloaded module Kext net.lundman.zfs class ZFSDataset has 2 instances. Kext net.lundman.zfs class ZFSDataset has 2 instances.

--From system.log:

Nov 2 16:17:41 davesimac-2 kernel[0]: Can't unload kext net.lundman.zfs; classes have instances: Nov 2 16:17:41 davesimac-2 kernel[0]: Kext net.lundman.zfs class ZFSDataset has 2 instances. Nov 2 16:17:41 davesimac-2 UserEventAgent[54]: Failed to send message because the port couldn't be created. Nov 2 16:17:41 davesimac-2 WirelessUtility[837]: OidQueryInformation [Line 198] OidQueryInformation ==> NoDriver Nov 2 16:17:42 davesimac-2 Installer[5001]: The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.

[kneutron]

Update - zpool command was not available after the install failed; tried reinstalling 1.9.2 and got the same error.

Fix: rebooted and 1.9.3 for El Capitan installed OK:

dmesg|grep ZFS

hfs: mounted OpenZFS on OS X 1.9.3 on device disk3s1 ZFS: Loading module ... ZFS: hostid set to 0e609cdb from UUID '43CD1A00-034D-53F3-AF3E-413FF1E79A2D' ZFS: Loaded module v1.9.3-0, ZFS pool version 5000, ZFS filesystem version 5 ZFS filesystem version: 5

All pools imported OK after 1.9.3 installed without having to reboot again

[lundman]

Thanks for reporting back, does seem it needs a reboot between 1.9.2 and 1.9.3.