Hi list,

We have debian lenny a iscsi + multipath system with a Clariion EMC RX300 as iscsi server. It is working fine, but from some days ago, it is writting (continously) on syslog:

[5078349.903410] scsi 6:0:0:0: rejecting I/O to dead device

[5078349.903410] scsi 7:0:0:0: rejecting I/O to dead device
[5078349.903410] device-mapper: multipath emc: long trespass command will be send
[5078349.903410] device-mapper: multipath emc: honor reservation bit will not be set (default)

[5078349.947653] device-mapper: table: 254:6: multipath: unknown path selector type
[5078349.947708] device-mapper: ioctl: error adding target to table

scsi 6:0:0:0 not exist at lsscsi:

# lscsi
[8:0:0:0]*** disk*** DGC***** RAID 5********** 0324* /dev/sdc

[9:0:0:0]*** disk*** DGC***** RAID 5********** 0324* /dev/sdd
[10:0:0:0]** disk*** DGC***** RAID 5********** 0324* /dev/sda
[11:0:0:0]** disk*** DGC***** RAID 5********** 0324* /dev/sdb

multipath is working fine:

# multipath -ll
mpath0 (360060160e5101f0020efc45a01cddd11) dm-6 DGC**** ,RAID 5
[size=512G][features=1 queue_if_no_path][hwhandler=1 emc]
\_ round-robin 0 [prio=2][active]
*\_ 8:0:0:0* sdc 8:32* [active][ready]

*\_ 9:0:0:0* sdd 8:48* [active][ready]
\_ round-robin 0 [prio=0][enabled]
*\_ 10:0:0:0 sda 8:0** [active][ready]
*\_ 11:0:0:0 sdb 8:16* [active][ready]

Dispositve 254:6 is mpath0:
# devmap_name 254 6

mpath0

How could can I stop scsi system / multipath from this messages ?

Is there any command who could help us ?

Thank you for any advice
PD: Sorry for my english

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