RHEL7删除停用的多路径磁盘
    1、sdh、sdi、sdj为已经停用的磁盘
    [root@ywkvm08 ~]# lsblk
    NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
    sda 8:0 0 5.1T 0 disk
    ├─sda1 8:1 0 1M 0 part
    ├─sda2 8:2 0 500M 0 part /boot
    └─sda3 8:3 0 5.1T 0 part
    ├─vg00-lvroot 253:0 0 100G 0 lvm /
    ├─vg00-lv_swap 253:1 0 64G 0 lvm [SWAP]
    ├─vg00-lv_vmfs 253:2 0 500G 0 lvm /vmfs
    ├─vg00-lv_exsivm 253:3 0 1.8T 0 lvm /vmfs/exsivm
    └─vg00-extra_10_201    *_21_data 253:4 0 200G 0 lvm
    sdb 8:16 0 150G 0 disk
    └─360a9800038302d386e2b487357637731 253:5 0 150G 0 mpath
    sdc 8:32 0 140G 0 disk
    └─360a9800038302d386e2b487357637733 253:6 0 140G 0 mpath
    sdd 8:48 0 150G 0 disk
    └─360a9800038302d386e2b487357637731 253:5 0 150G 0 mpath
    sde 8:64 0 140G 0 disk
    └─360a9800038302d386e2b487357637733 253:6 0 140G 0 mpath
    sdf 8:80 0 1.5T 0 disk
    └─mpatha 253:7 0 1.5T 0 mpath
    sdg 8:96 0 1.5T 0 disk
    └─mpatha 253:7 0 1.5T 0 mpath
    sdh 8:112 0 10G 0 disk
    sdi 8:128 0 10G 0 disk
    └─360a9800038302d386e2b487357637735 253:8 0 10G 0 mpath
    sdj 8:144 0 10G 0 disk
    └─360a9800038302d386e2b487357637735 253:8 0 10G 0 mpath

    2、确认挂载点
    [root@ywkvm08 ~]# blkid
    /dev/sda1: PARTUUID=”4939024e-5429-4cfd-bfbc-6455d89a4db3”
    /dev/sda2: UUID=”8ae78104-5200-436e-a77f-af02ee2f47a3” TYPE=”ext4” PARTUUID=”3189d053-59b0-4f38-a14f-701808acaa69”
    /dev/sda3: UUID=”vj8nvF-1fsm-cVwg-0w3R-7meY-znrK-PgCMrI” TYPE=”LVM2_member” PARTUUID=”86443f65-6e63-4e5b-9e21-eafd6ab0fd11”
    /dev/mapper/vg00-lv_root: UUID=”483c14bb-c68e-4f6b-b3c9-a1e285567186” TYPE=”ext4”
    /dev/mapper/vg00-lv_swap: UUID=”90016900-6ca4-41d3-8146-781f19cb84a7” TYPE=”swap”
    /dev/mapper/vg00-lv_vmfs: UUID=”299c3b76-d192-4f47-8864-beb228cab449” TYPE=”ext4”
    /dev/mapper/vg00-lv_exsivm: UUID=”a8bdd241-6a08-427e-9fff-eafc9a7839d7” TYPE=”ext4”
    /dev/mapper/vg00-extra_10_201_242_21_data: PTTYPE=”dos”
    /dev/mapper/mpatha: UUID=”mUuRVu-1INQ-nqq2-HQNt-dGWx-074B-nFHRdf” TYPE=”LVM2_member”
    /dev/sdg: UUID=”mUuRVu-1INQ-nqq2-HQNt-dGWx-074B-nFHRdf” TYPE=”LVM2_member”
    /dev/mapper/360a9800038302d386e2b487357637735: UUID=”fbe4b8eb-629f-4d19-ba93-07030f6d4e1f” TYPE=”ext4”
    [root@ywkvm08 ~]# df -h
    Filesystem Size Used Avail Use% Mounted on
    devtmpfs 189G 0 189G 0% /dev
    tmpfs 189G 0 189G 0% /dev/shm
    tmpfs 189G 20M 189G 1% /run
    tmpfs 189G 0 189G 0% /sys/fs/cgroup
    /dev/mapper/vg00-lv_root 99G 2.4G 91G 3% /
    /dev/sda2 477M 114M 334M 26% /boot
    /dev/mapper/vg00-lv_vmfs 493G 54G 414G 12% /vmfs
    /dev/mapper/vg00-lv_exsivm 1.8T 1.6T 149G 92% /vmfs/exsivm
    tmpfs 38G 0 38G 0% /run/user/0
    /dev/mapper/360a9800038302d386e2b487357637735 9.8G 37M 9.2G 1% /testdisk

    3、卸载挂载点

    [root@ywkvm08 ~]# umount /testdisk

    4、确认多路径映射wwid
    [root@ywkvm08 ~]# multipath -ll
    360a9800038302d386e2b487357637733 dm-7 NETAPP ,LUN
    size=140G features=’4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle’ hwhandler=’0’ wp=rw
    |-+- policy=’service-time 0’ prio=4 status=active
    | - 11:0:1:1 sde 8:64 active ready running-+- policy=’service-time 0’ prio=1 status=enabled
    - 11:0:0:1 sdc 8:32 active ready running mpatha (36000d31000efba000000000000000027) dm-8 COMPELNT,Compellent Vol size=1.5T features='1 queue_if_no_path' hwhandler='0' wp=rw-+- policy=’service-time 0’ prio=1 status=active
    - 11:0:3:1 sdg 8:96 active ready running 360a9800038302d386e2b487357637731 dm-6 NETAPP ,LUN size=150G features='4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle' hwhandler='0' wp=rw |-+- policy='service-time 0' prio=4 status=active |- 11:0:1:0 sdd 8:48 active ready running
    -+- policy='service-time 0' prio=1 status=enabled- 11:0:0:0 sdb 8:16 active ready running
    [root@ywkvm08 ~]# multipath -ll
    360a9800038302d386e2b487357637735 dm-5 NETAPP ,LUN
    size=10G features=’4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle’ hwhandler=’0’ wp=rw
    -+- policy='service-time 0' prio=0 status=enabled- 11:0:0:2 sdi 8:128 failed faulty running
    360a9800038302d386e2b487357637733 dm-7 NETAPP ,LUN
    size=140G features=’4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle’ hwhandler=’0’ wp=rw
    |-+- policy=’service-time 0’ prio=4 status=active
    | - 11:0:1:1 sde 8:64 active ready running-+- policy=’service-time 0’ prio=1 status=enabled
    - 11:0:0:1 sdc 8:32 active ready running mpatha (36000d31000efba000000000000000027) dm-8 COMPELNT,Compellent Vol size=1.5T features='1 queue_if_no_path' hwhandler='0' wp=rw-+- policy=’service-time 0’ prio=1 status=active
    - 11:0:3:1 sdg 8:96 active ready running 360a9800038302d386e2b487357637731 dm-6 NETAPP ,LUN size=150G features='4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle' hwhandler='0' wp=rw |-+- policy='service-time 0' prio=4 status=active |- 11:0:1:0 sdd 8:48 active ready running
    `-+- policy=’service-time 0’ prio=1 status=enabled

    [root@ywkvm08 ~]# cd /sys/block/
    [root@ywkvm08 block]# ls
    dm-0 dm-1 dm-2 dm-3 dm-4 dm-5 dm-6 dm-7 dm-8 dm-9 sda sdb sdc sdd sde sdf sdg sdh sdi sdj
    [root@ywkvm08 block]# ls sdh/
    [root@ywkvm08 block]# cat sdh/device/wwid
    naa.6000d31000efba000000000000000028
    [root@ywkvm08 block]# cat sdj/device/wwid
    naa.60a9800038302d386e2b487357637735
    [root@ywkvm08 block]# cat sdi/device/wwid
    naa.60a9800038302d386e2b487357637735

    5、禁用多路径映射
    [root@ywkvm08 ~]# cat /etc/multipath.conf
    blacklist {
    wwid naa.6000d31000efba000000000000000028
    wwid naa.60a9800038302d386e2b487357637735
    wwid naa.60a9800038302d386e2b487357637735

    }

    [root@ywkvm08 block]# systemctl restart multipathd.service
    [root@ywkvm08 block]#
    [root@ywkvm08 block]#
    [root@ywkvm08 block]#
    [root@ywkvm08 block]# multipath -ll
    360a9800038302d386e2b487357637733 dm-7 NETAPP ,LUN
    size=140G features=’4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle’ hwhandler=’0’ wp=rw
    |-+- policy=’service-time 0’ prio=4 status=active
    | - 11:0:1:1 sde 8:64 active ready running-+- policy=’service-time 0’ prio=1 status=enabled
    - 11:0:0:1 sdc 8:32 active ready running mpatha (36000d31000efba000000000000000027) dm-8 COMPELNT,Compellent Vol size=1.5T features='1 queue_if_no_path' hwhandler='0' wp=rw-+- policy=’service-time 0’ prio=1 status=active
    - 11:0:3:1 sdg 8:96 active ready running 360a9800038302d386e2b487357637731 dm-6 NETAPP ,LUN size=150G features='4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle' hwhandler='0' wp=rw |-+- policy='service-time 0' prio=4 status=active |- 11:0:1:0 sdd 8:48 active ready running
    -+- policy='service-time 0' prio=1 status=enabled- 11:0:0:0 sdb 8:16 active ready running

    6、删除系统盘符映射

    [root@ywkvm08 block]#
    [root@ywkvm08 block]# lsblk
    NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
    sda 8:0 0 5.1T 0 disk
    ├─sda1 8:1 0 1M 0 part
    ├─sda2 8:2 0 500M 0 part /boot
    └─sda3 8:3 0 5.1T 0 part
    ├─vg00-lvroot 253:0 0 100G 0 lvm /
    ├─vg00-lv_swap 253:1 0 64G 0 lvm [SWAP]
    ├─vg00-lv_vmfs 253:2 0 500G 0 lvm /vmfs
    ├─vg00-lv_exsivm 253:3 0 1.8T 0 lvm /vmfs/exsivm
    └─vg00-extra_10_201    21_data 253:4 0 200G 0 lvm
    sdb 8:16 0 150G 0 disk
    └─360a9800038302d386e2b487357637731 253:6 0 150G 0 mpath
    sdc 8:32 0 140G 0 disk
    └─360a9800038302d386e2b487357637733 253:7 0 140G 0 mpath
    sdd 8:48 0 150G 0 disk
    └─360a9800038302d386e2b487357637731 253:6 0 150G 0 mpath
    sde 8:64 0 140G 0 disk
    └─360a9800038302d386e2b487357637733 253:7 0 140G 0 mpath
    sdf 8:80 0 1.5T 0 disk
    sdg 8:96 0 1.5T 0 disk
    └─mpatha 253:8 0 1.5T 0 mpath
    └─pmmserver-data 253:9 0 1.5T 0 lvm
    sdh 8:112 0 10G 0 disk
    sdi 8:128 0 10G 0 disk
    └─sdi1 8:129 0 10G 0 part
    sdj 8:144 0 10G 0 disk
    [root@ywkvm08 block]# ls
    dm-0 dm-1 dm-2 dm-3 dm-4 dm-6 dm-7 dm-8 dm-9 sda sdb sdc sdd sde sdf sdg sdh sdi sdj
    [root@ywkvm08 block]# ls
    dm-0 dm-1 dm-2 dm-3 dm-4 dm-6 dm-7 dm-8 dm-9 sda sdb sdc sdd sde sdf sdg sdh sdi sdj
    [root@ywkvm08 block]# echo offline > sdh/device/stat
    [root@ywkvm08 block]# echo offline > sdi/device/stat
    [root@ywkvm08 block]# echo offline > sdj/device/stat
    [root@ywkvm08 ~]# echo 1 > /sys/block/sdh/device/delete
    [root@ywkvm08 ~]# lsblk
    NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
    sda 8:0 0 5.1T 0 disk
    ├─sda1 8:1 0 1M 0 part
    ├─sda2 8:2 0 500M 0 part /boot
    └─sda3 8:3 0 5.1T 0 part
    ├─vg00-lv_root 253:0 0 100G 0 lvm /
    ├─vg00-lv_swap 253:1 0 64G 0 lvm [SWAP]
    ├─vg00-lv_vmfs 253:2 0 500G 0 lvm /vmfs
    ├─vg00-lv_exsivm 253:3 0 1.8T 0 lvm /vmfs/exsivm
    └─vg00-extra_10_201    21_data 253:4 0 200G 0 lvm
    sdb 8:16 0 150G 0 disk
    └─360a9800038302d386e2b487357637731 253:6 0 150G 0 mpath
    sdc 8:32 0 140G 0 disk
    └─360a9800038302d386e2b487357637733 253:7 0 140G 0 mpath
    sdd 8:48 0 150G 0 disk
    └─360a9800038302d386e2b487357637731 253:6 0 150G 0 mpath
    sde 8:64 0 140G 0 disk
    └─360a9800038302d386e2b487357637733 253:7 0 140G 0 mpath
    sdf 8:80 0 1.5T 0 disk
    sdg 8:96 0 1.5T 0 disk
    └─mpatha 253:8 0 1.5T 0 mpath
    └─pmmserver-data 253:9 0 1.5T 0 lvm
    sdi 8:128 0 10G 0 disk
    └─sdi1 8:129 0 10G 0 part
    sdj 8:144 0 10G 0 disk
    [root@ywkvm08 ~]# echo 1 > /sys/block/sdj/device/delete
    [root@ywkvm08 ~]# echo 1 > /sys/block/sdi/device/delete
    [root@ywkvm08 ~]# lsblk
    NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
    sda 8:0 0 5.1T 0 disk
    ├─sda1 8:1 0 1M 0 part
    ├─sda2 8:2 0 500M 0 part /boot
    └─sda3 8:3 0 5.1T 0 part
    ├─vg00-lv_root 253:0 0 100G 0 lvm /
    ├─vg00-lv_swap 253:1 0 64G 0 lvm [SWAP]
    ├─vg00-lv_vmfs 253:2 0 500G 0 lvm /vmfs
    ├─vg00-lv_exsivm 253:3 0 1.8T 0 lvm /vmfs/exsivm
    └─vg00-extra_10_201    *_21_data 253:4 0 200G 0 lvm
    sdb 8:16 0 150G 0 disk
    └─360a9800038302d386e2b487357637731 253:6 0 150G 0 mpath
    sdc 8:32 0 140G 0 disk
    └─360a9800038302d386e2b487357637733 253:7 0 140G 0 mpath
    sdd 8:48 0 150G 0 disk
    └─360a9800038302d386e2b487357637731 253:6 0 150G 0 mpath
    sde 8:64 0 140G 0 disk
    └─360a9800038302d386e2b487357637733 253:7 0 140G 0 mpath
    sdf 8:80 0 1.5T 0 disk
    sdg 8:96 0 1.5T 0 disk
    └─mpatha 253:8 0 1.5T 0 mpath
    └─pmmserver-data 253:9 0 1.5T 0 lvm