Hardware: Dell R730, with a H330 mini controller We are using the MegaCli (from ports) tool to monitor the state of the disks. But after a reboot, it stopped working. The systems is otherwise working as expected. At the same time we see messages like these in the log: Jul 13 01:32:51 *** kernel: mrsas0: Cannot allocate ioctl data mem Jul 13 01:33:30 *** kernel: mrsas0: Cannot allocate ioctl data mem Jul 13 01:33:30 *** last message repeated 9 times Jul 13 01:33:30 *** kernel: mrsas0: Failed to get a free cmd for IOCTL Jul 13 01:33:30 *** last message repeated 17 times Jul 13 01:33:30 *** kernel: mrsas0: Failed to get a free cmd for IOCTL Jul 13 01:33:31 *** last message repeated 2 times Jul 13 01:34:11 *** kernel: mrsas0: Failed to get a free cmd for IOCTL Jul 13 01:34:11 *** kernel: mrsas0: Failed to get a free cmd for IOCTL Jul 13 01:34:11 *** last message repeated 2 times And last here are a few more details about the system: # uname -a FreeBSD *** 10.1-RELEASE-p10 FreeBSD 10.1-RELEASE-p10 #0: Wed May 13 06:54:13 UTC 2015 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 # sysctl dev.mrsas dev.mrsas.%parent: dev.mrsas.0.%desc: LSI Fury SAS Controller dev.mrsas.0.%driver: mrsas dev.mrsas.0.%location: slot=0 function=0 dev.mrsas.0.%pnpinfo: vendor=0x1000 device=0x005f subvendor=0x1028 subdevice=0x1f4b class=0x010400 dev.mrsas.0.%parent: pci2 dev.mrsas.0.disable_ocr: 0 dev.mrsas.0.driver_version: 06.704.01.01-fbsd dev.mrsas.0.reset_count: 0 dev.mrsas.0.fw_outstanding: 1 dev.mrsas.0.io_cmds_highwater: 208 dev.mrsas.0.mrsas_debug: 4 dev.mrsas.0.mrsas_io_timeout: 180000 dev.mrsas.0.mrsas_fw_fault_check_delay: 1 dev.mrsas.0.reset_in_progress: 0