Dariush Debian Diary
Diariusz Dariusza
, 19, 2009
Hot-add Hot-remove: linux scsi subsystem
We've got erroneous scsi entry, remove it:
for n in `seq 0 0`; do echo $n; echo "scsi remove-single-device 1 0 0 $n" > /proc/scsi/scsi ; echo "scsi remove-single-device 0 0 0 $n" > /proc/scsi/scsi ; doneNow, we attached new FC LUN as 0:0:0:0 and 1:0:0:0
for n in `seq 0 0`; do echo $n; echo "scsi add-single-device 1 0 0 $n" > /proc/scsi/scsi ; echo "scsi add-single-device 0 0 0 $n" > /proc/scsi/scsi ; donenow, multipath -ll will show you, that multipath deteceted deviced with extra path to it, and created new device for it:
360060160e0b11c00d846a76e4be6dd11dm-12 DGC,VRAID [size=140G][features=1 queue_if_no_path][hwhandler=1 emc] \_ round-robin 0 [prio=1][active] \_ 1:0:0:0 sda 8:0 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 0:0:0:0 sde 8:64 [active][ready]
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