1.1 记录存储的 WWN 号及磁盘信息
1.1.1 记录已有磁盘信息
root@pols1:/sys/class/scsi_host# fdisk -l|grep /dev/ WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Disk /dev/sda: 1798.7 GB, 1798651772928 bytes, 3512991744 sectors Disk /dev/mapper/rhel-root: 42.9 GB, 42949672960 bytes, 83886080 sectors Disk /dev/mapper/rhel-swap: 34.4 GB, 34359738368 bytes, 67108864 sectors Disk /dev/mapper/mpathh: 536.9 GB, 536870912000 bytes, 1048576000 sectors Disk /dev/mapper/mpatha: 2147 MB, 2147483648 bytes, 4194304 sectors--此处省略-- Disk /dev/sdaw: 214.7 GB, 214748364800 bytes, 419430400 sectors
1.1.2 记录多路径信息
root@pddhuifu1:/root# multipath -ll mpathe (xxxx) dm-9 EMC ,Invista size=500G features='1 queue_if_no_path' hwhandler='0' wp=rw `-+- policy='service-time 0' prio=1 status=active |- 15:0:1:3 sds 65:32 active ready running |- 16:0:0:3 sdv 65:80 active ready running |- 16:0:1:3 sdj 8:144 active ready running `- 15:0:0:3 sdg 8:96 active ready running--此处省略--root@pddhuifu1:/root# multipath -ll|grep dm-mpathe (xxxx) dm-9 EMC ,Invista --此处省略-- 查看udev文件，新加规则--此处省略--KERNEL=="dm*", ENV{DEVTYPE}=="disk", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d $devnode", RESULT=="xxxx", RUN+="/bin/sh -c 'mknod /dev/asm-data09 b $major $minor; chown grid:asmadmin /dev/asm-data09; chmod 0660 /dev/asm-data09'"root@pddhuifu1:/dev# ls -l asm*--此处省略--brw-rw---- 1 grid asmadmin 253, 9 Jan 14 08:48 asm-data09
1.1.3 记录当前 wwn 号，
1.2 分配磁盘
1.2.1 存储分配磁盘
1.2.2 系统动态扫盘
echo "- - -" > /sys/class/scsi_host/hostx/scan 然后再运行 fdisk -l 就能发现新添加的硬盘已经被系统识别了，查看系统日志 /var/log/messages ，发现对 SCSI 设备进行了一次重新扫描。 需要注意的是 echo 的三个 - – - 号之间有空隔。 扫描磁盘，使操作系统能够识别到新增的存储 /sys/class/scsi_host/ 下面有几个 host 就扫描几次 cd /sys/class/scsi_host/ echo "- - -">host0/scanecho "- - -">host1/scanecho "- - -">host2/scanecho "- - -">host3/scanecho "- - -">host4/scanecho "- - -">host5/scanecho "- - -">host6/scanecho "- - -">host7/scanecho "- - -">host8/scanecho "- - -">host9/scanecho "- - -">host10/scanecho "- - -">host11/scanecho "- - -">host12/scanecho "- - -">host13/scanecho "- - -">host14/scanecho "- - -">host15/scanecho "- - -">host16/scan 发现新扩容的存储
1.3 识别多路径
multipath –llmpathm (xxxx) dm-17 EMC ,Invista size=100G features='1 queue_if_no_path' hwhandler='0' wp=rw`-+- policy='service-time 0' prio=1 status=active |- 16:0:0:12 sday 67:32 active ready running |- 15:0:1:12 sdax 67:16 active ready running |- 15:0:0:12 sdaz 67:48 active ready running `- 16:0:1:12 sdba 67:64 active ready running
1.5 配置 udev
省略 KERNEL=="dm*", ENV{DEVTYPE}=="disk", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d $devnode", RESULT=="xxxx", RUN+="/bin/sh -c 'mknod /dev/asm-data10 b $major $minor; chown grid:asmadmin /dev/asm-data10; chmod 0660 /dev/asm-data10'" /usr/lib/udev/scsi_id -g -u -d /dev/ dm-17实际操作命令如下（本部分为实际生产操作）：cd /sys/class/fc_host/echo "1" > /sys/class/fc_host/host15/issue_lipecho "1" > /sys/class/fc_host/host16/issue_lip/sbin/udevadm control –reload/usr/lib/udev/scsi_id -g -u -d /dev/sdbj/usr/lib/udev/scsi_id -g -u -d /dev/sdbm/usr/lib/udev/scsi_id -g -u -d /dev/sdbn/usr/lib/udev/scsi_id -g -u -d /dev/sdbp/usr/lib/udev/scsi_id -g -u -d /dev/sdbt/usr/lib/udev/scsi_id -g -u -d /dev/sdbx/usr/lib/udev/scsi_id -g -u -d /dev/sdcc/usr/lib/udev/scsi_id -g -u -d /dev/sdcgecho "1" > /sys/class/fc_host/host15/issue_lipecho "1" > /sys/class/fc_host/host16/issue_lip/sbin/udevadm control –reloadcd /devls -lrt asm*exitvi /etc/udev/rules.d/99-oracle-asmdevices.rulescd /dev/sbin/udevadm trigger --type=devices --action=change ls -lrt asm*
1.6 图形化形式添加 asm 磁盘
测试使用命令行添加
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查看磁盘
set lin 200 col path for a50 select name,path,state,mount_status,header_status from v$asm_disk;
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添加磁盘
--alter diskgroup DATADG add disk '/dev/asm-data10' rebalance power 8;alter diskgroup DATADG add disk '/dev/asm-data10';备库：power先用默认的。
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查看状态
select name,path,state,mount_status,header_status from v$asm_disk; select * from v$asm_operation; 默认REBALANCE需要10分钟。 清除磁盘 alter diskgroup DATADG drop disk 'DATADG_0008' rebalance power 8;
