I have a running cluster system. I need to remove one LUN "LUN09". I disconnected the LUN from EMC then I removed the LV then removed the VG "vginfra" then the PV.

I found that mpath still has a new LUN "19" without removing "LUN09".

I need to clean this


[root@gcds1 bin]# ./mpathconfig.pl -l
/dev/mapper/lun01 size=358G
/dev/mapper/lun02 size=66G
/dev/mapper/lun04 size=330G
/dev/mapper/lun05 size=750G
/dev/mapper/lun06 size=592G
/dev/mapper/lun07 size=90G
/dev/mapper/lun08 size=90G
/dev/mapper/lun09 size=3.6T
/dev/mapper/lun10 size=5.0T
/dev/mapper/lun11 size=170G
/dev/mapper/lun12 size=170G
/dev/mapper/lun13 size=500G
/dev/mapper/lun14 size=582G
/dev/mapper/lun15 size=500G
/dev/mapper/lun16 size=582G
/dev/mapper/lun17 size=65G
/dev/mapper/lun18 size=65G
/dev/mapper/lun19 size=3.6T
/dev/mapper/lun20 size=7.2T
[root@gcds1 bin]#

[root@gcds1 bin]# multipath -ll
sdac: checker msg is "emc_clariion_checker: Logical Unit is unbound or LUNZ"
sdi: checker msg is "emc_clariion_checker: Logical Unit is unbound or LUNZ"
lun18 (36006016016402600eeba9cf34b1fe111) dm-9 DGC,RAID 10
[size=65G][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=1][active]
\_ 3:0:0:17 sdaj 66:48 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 2:0:0:17 sdp 8:240 [active][ready]
.
.
.
lun09 (360060160164026008a01c5e1a226df11) dm-2 DGC,RAID 5
[size=3.6T][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=0][enabled]
\_ 2:0:0:9 sdi 8:128 [failed][faulty]
\_ round-robin 0 [prio=0][enabled]
\_ 3:0:0:9 sdac 65:192 [failed][faulty]
.
.
.
lun19 (350060160c460156b50060160c460156b) dm-30 DGC,RAID 5
[size=3.6T][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=0][enabled]
\_ 3:0:0:9 sdac 65:192 [failed][faulty]
\_ 2:0:0:9 sdi 8:128 [failed][faulty]
.


[root@gcds1 bin]# pvscan
/dev/mapper/lun09: read failed after 0 of 4096 at 3939125624832: Input/output error
/dev/mapper/lun09: read failed after 0 of 4096 at 3939125682176: Input/output error
/dev/mapper/lun09: read failed after 0 of 4096 at 0: Input/output error
/dev/mapper/lun09: read failed after 0 of 4096 at 4096: Input/output error
/dev/mapper/vginfra-lvol1: read failed after 0 of 4096 at 3939118284800: Input/output error
/dev/mapper/vginfra-lvol1: read failed after 0 of 4096 at 3939118342144: Input/output error
/dev/mapper/vginfra-lvol1: read failed after 0 of 4096 at 0: Input/output error
/dev/mapper/vginfra-lvol1: read failed after 0 of 4096 at 4096: Input/output error
/dev/mapper/lun19: read failed after 0 of 4096 at 3939125624832: Input/output error
/dev/mapper/lun19: read failed after 0 of 4096 at 3939125682176: Input/output error
/dev/mapper/lun19: read failed after 0 of 4096 at 0: Input/output error
/dev/mapper/lun19: read failed after 0 of 4096 at 4096: Input/output error
PV /dev/mapper/lun01 VG vgarc lvm2 [358.00 GB / 0 free]
PV /dev/mapper/lun05 VG vgarc lvm2 [750.00 GB / 0 free]
PV /dev/mapper/lun06 VG vgarc lvm2 [591.85 GB / 62.55 GB free]
PV /dev/mapper/lun20 VG vgbackup lvm2 [7.17 TB / 0 free]
PV /dev/mapper/lun10 VG vgbackup2 lvm2 [5.01 TB / 4.00 MB free]
PV /dev/mapper/lun04 VG vgdb lvm2 [330.00 GB / 0 free]
PV /dev/mapper/lun13 VG vgdb lvm2 [500.00 GB / 0 free]
PV /dev/mapper/lun14 VG vgdb lvm2 [581.85 GB / 0 free]
PV /dev/mapper/lun15 VG vgdb lvm2 [500.00 GB / 103.15 GB free]
PV /dev/mapper/lun16 VG vgdb lvm2 [581.85 GB / 0 free]
PV /dev/mapper/lun11 VG vgglobal lvm2 [170.00 GB / 0 free]
PV /dev/mapper/lun12 VG vgglobal lvm2 [170.00 GB / 0 free]
PV /dev/mapper/lun17 VG vgglobal lvm2 [65.00 GB / 32.00 MB free]
PV /dev/mapper/lun18 VG vgglobal lvm2 [65.00 GB / 32.00 MB free]
PV /dev/mapper/lun02 VG vgredo lvm2 [66.00 GB / 0 free]
PV /dev/mapper/lun07 VG vgredo lvm2 [90.00 GB / 0 free]
PV /dev/mapper/lun08 VG vgredo lvm2 [90.00 GB / 4.21 GB free]
Total: 17 [16.97 TB] / in use: 17 [16.97 TB] / in no VG: 0 [0 ]
[root@gcds1 bin]#

I could be wrong, but I believe you should have started from the host end.

hi,
what do you mean to start from the host end

This sounds like you cutoff the disk from the SAN, then tried to adjust it on the host end.
I would expect you'd clean-up the disk at the host end ie LV, VG, PV, then disconnect it ie after you've removed everything the host had on there.

OK, the disks are already disconnected & we can't connect it again. what is the recommended procedure to clean it?