mapper multipath配置文档.docx

RHEL4 U3 mapper multipath安装和配置环境：Rehdat AS 4 U3 X86_64rpm packagedevice-mapper-1.02.02-3.0.RHEL4device-mapper-multipath-0.4.5-6.0.RHEL4安装和配置步骤：1.安装mapper和multipath 包rpm ivh device-mapper-1.02.02-3.0.RHEL4.rpmrpm ivh device-mapper-multipath-0.4.5-6.0.RHEL4.rpm2.用rpm qa | grep mapper 查看安装正常device-mapper-1.02.02-3.0.RHEL4device-mapper-1.02.02-3.0.RHEL4 3.查看wwid信息,确保需要聚合disk1)rootlinux225 qle# fdisk -l Disk /dev/sda: 898.3 GB, 898319253504 bytes255 heads, 63 sectors/track, 109214 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sda1 1 127 1020096 82 Linux swap/dev/sda2 * 128 1275 9221310 83 Linux/dev/sda3 1276 109202 866923627+ 83 LinuxDisk /dev/sdb: 536.8 GB, 536881397760 bytes255 heads, 63 sectors/track, 65272 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesisk /dev/sdb doesnt contain a valid partition tableDisk /dev/sdc: 536.8 GB, 536881397760 bytes255 heads, 63 sectors/track, 65272 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesDisk /dev/sdc doesnt contain a valid partition table2) rootlinux225 qle# scsi_id -gp 0x83 -s /block/sdb36090a058b0d5edb108b8046d08009077rootlinux225 qle# scsi_id -gp 0x83 -s /block/sdc36090a058b0d5edb108b8046d080090774.编辑 /etc/multipath.confrootlinux225 etc# vi multipath.conf rootlinux225 etc# vi multipath.conf multipath wwid 36090a058b0d5edb108b8046d08009077 alias PS6000 path_grouping_policy multibus path_checker readsector0 path_selector round-robin 0 failback immediate # Blacklist all devices by default. Remove this to enable multipathing# on the default devices.#devnode_blacklist # devnode *# This is a template multipath-tools configuration file# Uncomment the lines relevent to your environment#defaults multipath_tool /sbin/multipath -v0 udev_dir /dev polling_interval 10 default_selector round-robin 0 default_path_grouping_policy multibus default_getuid_callout /sbin/scsi_id -g -u -s /block/%n default_prio_callout /bin/true default_features 1 queue_if_no_path rr_wmin_io 10 failback immediate 5.重启 mulitpathd服务service multipathd restartStopping multipathd daemon: OK Starting multipathd daemon: OK rootlinux225 etc# ll /dev/mappertotal 0brw-rw- 1 root disk 253, 1 Feb 20 19:11 36090a058b0d5edb108b8046d08009077crw- 1 root root 10, 63 Feb 20 19:11 control还没有PS 6000的maper路径出来rootlinux225 etc# multipath -v2 /执行此命令重新路径扫描create: 36090a058b0d5edb108b8046d08009077size=836 GBfeatures=1 queue_if_no_pathhwhandler=0_ round-robin 0 _ 0:2:0:0 sda 8:0 device-mapper ioctl cmd 9 failed: Invalid argumentdevice-mapper ioctl cmd 14 failed: No such device or addresscreate: ps6000 (36090a058b0d54d37fcb7d46c080040d0)size=300 GBfeatures=1 queue_if_no_pathhwhandler=0_ round-robin 0 _ 2:0:1:0 sdb 8:16 active _ 3:0:2:0 sdd 8:48 activerootlinux225 etc# ll /dev/mappertotal 0brw-rw- 1 root disk 253, 1 Feb 20 19:11 36090a058b0d5edb108b8046d08009077crw- 1 root root 10, 63 Feb 20 19:11 controlbrw-rw- 1 root disk 253, 3 Feb 20 19:23 ps6000 rootlinux225 etc# mkfs.ext3 /dev/mapper/ps6000mke2fs 1.40.2_1.1.0.0 (12-Jul-2007)Filesystem label=OS type: LinuxBlock size=4096 (log=2)Fragment size=4096 (log=2)39321600 inodes, 78643200 blocks3932160 blocks (5.00%) reserved for the super userFirst data block=0Maximum filesystem blocks=42949672962400 block groups32768 blocks per group, 32768 fragments per group16384 inodes per groupSuperblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 265420