When trying to have smartd from the smartmontools package monitor the /dev/tweX devices, it fails with the following message: Oct 5 04:57:46 localhost smartd[2542]: Device: /dev/twe0 [3ware_disk_00], File exists, open() failed Oct 5 04:57:46 localhost smartd[2542]: Unable to register ATA device /dev/twe0 [3ware_disk_00] at line 64 of file /etc/smartd.conf Oct 5 04:57:46 localhost smartd[2542]: Device /dev/twe0 [3ware_disk_00] not available Oct 5 04:57:46 localhost smartd[2542]: Device: /dev/twe0 [3ware_disk_01], File exists, open() failed Oct 5 04:57:46 localhost smartd[2542]: Unable to register ATA device /dev/twe0 [3ware_disk_01] at line 65 of file /etc/smartd.conf Oct 5 04:57:46 localhost smartd[2542]: Device /dev/twe0 [3ware_disk_01] not available Oct 5 04:57:46 localhost smartd[2542]: Monitoring 0 ATA and 0 SCSI devices Oct 5 04:57:46 localhost smartd[2544]: smartd has fork()ed into background mode. New PID=2544. calling setenforce 0 make smartd work as expected: Oct 5 04:58:30 localhost smartd[2578]: Device: /dev/twe0 [3ware_disk_00], opened Oct 5 04:58:30 localhost smartd[2578]: Device: /dev/twe0 [3ware_disk_00], found in smartd database. Oct 5 04:58:30 localhost smartd[2578]: Device: /dev/twe0 [3ware_disk_00], is SMART capable. Adding to "monitor" list. Oct 5 04:58:30 localhost smartd[2578]: Device: /dev/twe0 [3ware_disk_01], opened Oct 5 04:58:31 localhost smartd[2578]: Device: /dev/twe0 [3ware_disk_01], found in smartd database. Oct 5 04:58:31 localhost smartd[2578]: Device: /dev/twe0 [3ware_disk_01], is SMART capable. Adding to "monitor" list. Oct 5 04:58:31 localhost smartd[2578]: Monitoring 2 ATA and 0 SCSI devices Oct 5 04:58:32 localhost smartd[2580]: smartd has fork()ed into background mode. New PID=2580. Relevant audit messages are as follows: type=AVC msg=audit(1223175510.536:21): avc: denied { getattr } for pid=2578 comm="smartd" path="/dev/twe0" dev=tmpfs ino=9357 scontext=ro ot:system_r:fsdaemon_t:s0 tcontext=root:object_r:device_t:s0 tclass=chr_file type=SYSCALL msg=audit(1223175510.536:21): arch=40000003 syscall=195 success=yes exit=0 a0=bfa25000 a1=bfa24eb0 a2=24eff4 a3=3 items=0 ppid= 2577 pid=2578 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="smartd" exe="/usr/sbin/smartd" subj=root:s ystem_r:fsdaemon_t:s0 key=(null) type=AVC msg=audit(1223175510.536:22): avc: denied { read } for pid=2578 comm="smartd" name="twe0" dev=tmpfs ino=9357 scontext=root:syste m_r:fsdaemon_t:s0 tcontext=root:object_r:device_t:s0 tclass=chr_file type=SYSCALL msg=audit(1223175510.536:22): arch=40000003 syscall=5 success=yes exit=3 a0=83f89b0 a1=800 a2=326470 a3=327c80 items=0 ppid=257 7 pid=2578 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="smartd" exe="/usr/sbin/smartd" subj=root:syst em_r:fsdaemon_t:s0 key=(null) type=AVC msg=audit(1223175510.537:23): avc: denied { ioctl } for pid=2578 comm="smartd" path="/dev/twe0" dev=tmpfs ino=9357 scontext=root :system_r:fsdaemon_t:s0 tcontext=root:object_r:device_t:s0 tclass=chr_file type=SYSCALL msg=audit(1223175510.537:23): arch=40000003 syscall=54 success=yes exit=0 a0=3 a1=1f a2=bfa247f8 a3=bfa249f8 items=0 ppid=2577 pid=2578 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="smartd" exe="/usr/sbin/smartd" subj=root:system _r:fsdaemon_t:s0 key=(null)
*** This bug has been marked as a duplicate of bug 456471 ***