<div dir="ltr">Hi, I am trying to get back from a strage situation. I have had both paths in a RDAC setup fail and then come back. I want to know if there is a way to recover from this without a reboot. (OS = CentOS 5.1) multipath -ll mpath2 (3600a0b800035ebc8000001a94652ae50) dm-4 IBM,1726-4xx FAStT [size=1.4T][features=0][hwhandler=1 rdac] \_ round-robin 0 [prio=0][enabled] \_ 2:0:0:1 sde 8:80 [failed][ghost] \_ round-robin 0 [prio=100][active] \_ 1:0:0:1 sdf 8:96 [failed][ready] dmsetup info mpath2 Name: mpath2 State: ACTIVE Tables present: LIVE Open count: 20 Event number: 3 Major, minor: 253, 4 Number of targets: 1 UUID: mpath-3600a0b800035ebc8000001a94652ae50 vgscan Reading all physical volumes. This may take a while... /dev/mapper/mpath2: read failed after 0 of 4096 at 1497314033664: Input/output error /dev/mapper/mpath2: read failed after 0 of 4096 at 0: Input/output error dmsetup remove --force mpath2 device-mapper: remove ioctl failed: Device or resource busy Command failed multipath -f mpath2 (just exits with return code 1) dmesg <<vendor>> ASC=0xe0 ASCQ=0x6ASC=0xe0 ASCQ=0x6 sde: Current: sense key: Recovered Error <<vendor>> ASC=0xe0 ASCQ=0x6ASC=0xe0 ASCQ=0x6 sdf: Current: sense key: Recovered Error <<vendor>> ASC=0xe0 ASCQ=0x6ASC=0xe0 ASCQ=0x6 end_request: I/O error, dev sdf, sector 61118720 device-mapper: multipath: Failing path 8:80. end_request: I/O error, dev sdf, sector 599510512 device-mapper: ioctl: unable to remove open device mpath2 device-mapper: ioctl: unable to remove open device mpath2 Any advice would be greatly appreciated. Thanks, Greg. </div>