Centos 5 多路径配置步骤
2012-10-20 22:53
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Centos 5 多路径配置步骤
1、检查系统中是否已安装multipath：
在CentOS 5中，一般情况下安装系统时multipath已经被安装，查看multipath是否安装如下：
[root@localhost vol]# rpm -qa | grep mapper
device-mapper-multipath-0.4.7-34.el5
device-mapper-1.02.39-1.el5
device-mapper-1.02.39-1.el5
device-mapper-event-1.02.39-1.el5
[root@localhost vol]#
如果没有安装，那么要安装下列rpm包（注意使用对应系统内核的rpm包）：
# rpm -ivh device-mapper-1.02.32-1.el5.i386.rpm
# rpm -ivh device-mapper-1.02.32-1.el5.x86_64.rpm
# rpm -ivh device-mapper-event-1.02.32-1.el5.x86_64.rpm
# rpm -ivh device-mapper-multipath-0.4.7-30.el5.x86_64.rpm
2、设置成开机自启动multipathd：
[root@localhost vol]# chkconfig --list | grep multipath
multipathd 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭
[root@localhost vol]# chkconfig --level 2345 multipathd on
[root@localhost vol]# chkconfig --list | grep multipathd
multipathd 0:关闭 1:关闭 2:启用 3:启用 4:启用 5:启用 6:关闭
[root@localhost vol]#
3、启动multipathd服务：
[root@localhost vol]# service multipathd status
multipathd 已停
[root@localhost vol]# service multipathd start
正在启动守护进程multipathd：[确定]
[root@localhost vol]# lsmod | grep dm_multipath
dm_multipath 56921 0
scsi_dh 42177 1 dm_multipath
dm_mod 101649 4 dm_mirror,dm_multipath,dm_raid45,dm_log
[root@localhost vol]# service multipathd status
multipathd (pid 9035) 正在运行...
[root@localhost vol]#
4、对multipath进行配置：
multipath的配置文件是/etc/multipath.conf
我们要对/dev/sdb 和 /dev/sdd 设置多路径，使用下面的命令检查：
[root@localhost mpath]# fdisk -l
Disk /dev/sda: 299.4 GB, 299439751168 bytes
255 heads, 63 sectors/track, 36404 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 102400 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 13 6375 51096576 82 Linux swap / Solaris
/dev/sda3 6375 36405 241219584 83 Linux
Disk /dev/sdb: 1099.5 GB, 1099511627776 bytes
255 heads, 63 sectors/track, 133674 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc (Sun disk label): 255 heads, 189 sectors, 47507 cylinders
Units = cylinders of 48195 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sdc3 u 0 47507 1144799932+ 5 Whole disk
/dev/sdc7 0 47507 1144799932+ 4 SunOS usr
Disk /dev/sdc3 (Sun disk label): 255 heads, 189 sectors, 47507 cylinders
Units = cylinders of 48195 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sdc3p3 u 0 47507 1144799932+ 5 Whole disk
/dev/sdc3p7 0 47507 1144799932+ 4 SunOS usr
Disk /dev/sdc7 (Sun disk label): 255 heads, 189 sectors, 47507 cylinders
Units = cylinders of 48195 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sdc7p3 u 0 47507 1144799932+ 5 Whole disk
/dev/sdc7p7 0 47507 1144799932+ 4 SunOS usr
Disk /dev/sdd: 1099.5 GB, 1099511627776 bytes
255 heads, 63 sectors/track, 133674 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sde (Sun disk label): 64 heads, 64 sectors, 8 cylinders
Units = cylinders of 4096 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sde3 u 0 8 16384 5 Whole disk
/dev/sde7 0 8 16384 4 SunOS usr
Disk /dev/sde3 (Sun disk label): 64 heads, 64 sectors, 8 cylinders
Units = cylinders of 4096 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sde3p3 u 0 8 16384 5 Whole disk
/dev/sde3p7 0 8 16384 4 SunOS usr
Disk /dev/sde7 (Sun disk label): 64 heads, 64 sectors, 8 cylinders
Units = cylinders of 4096 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sde7p3 u 0 8 16384 5 Whole disk
/dev/sde7p7 0 8 16384 4 SunOS usr
备份下/etc/multipath.conf文件：
[root@localhost etc]# cp /etc/multipath.conf /etc/multipath.conf.bak
修改后的/etc/multipath.conf配置如下：
blacklist {
devnode "sdc"
devnode "sde"
}
defaults {
user_friendly_names yes
udev_dir /dev
path_grouping_policy multibus
failback immediate
no_path_retry fail
}
其它行都注释掉了。
重启multipathd服务：
[root@localhost mpath]# service multipathd restart
正在关闭multipathd 端口监控程序：[确定]
正在启动守护进程multipathd：[确定]
查看多路径：
[root@localhost mpath]# multipath -ll
mpath1 (3600144f09307fd8700004fb0babc0002) dm-0 SUN,ZFS Storage 7320
[size=1.0T][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=2][active]
\_ 3:0:0:1 sdb 8:16 [active][ready]
\_ 3:0:3:1 sdd 8:48 [active][ready]
检查安装是否正常：
[root@localhost mpath]# lsmod | grep multipath
dm_multipath 56921 2 dm_round_robin
scsi_dh 42177 1 dm_multipath
dm_mod 101649 10 dm_mirror,dm_multipath,dm_raid45,dm_log
[root@localhost mpath]# ll /dev/mpath/
lrwxrwxrwx 1 root root 7 06-12 10:27 mpath1 -> ../dm-0
[root@localhost mpath]# ll /dev/mapper/
总计 0
crw------- 1 root root 10, 63 06-11 17:13 control
brw-rw---- 1 root disk 253, 0 06-12 10:27 mpath1
[root@localhost mpath]# ll /dev/dm-0
brw-rw---- 1 root root 253, 0 06-12 10:27 /dev/dm-0
创建并格式化物理卷：
[root@localhost mpath]# pvcreate /dev/mapper/mpath1
Physical volume "/dev/mapper/mpath1" successfully created
[root@localhost mpath]# fdisk /dev/mapper/mpath1
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.
The number of cylinders for this disk is set to 133674.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-133674, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-133674, default 133674):
Using default value 133674
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 22: 无效的参数.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.
删除现有路径：
[root@localhost mapper]# multipath -F
格式化路径：
[root@localhost mapper]# multipath -v3
loop0: blacklisted
loop1: blacklisted
loop2: blacklisted
loop3: blacklisted
loop4: blacklisted
loop5: blacklisted
loop6: blacklisted
loop7: blacklisted
md0: blacklisted
ram0: blacklisted
ram10: blacklisted
ram11: blacklisted
ram12: blacklisted
ram13: blacklisted
ram14: blacklisted
ram15: blacklisted
ram1: blacklisted
ram2: blacklisted
ram3: blacklisted
ram4: blacklisted
ram5: blacklisted
ram6: blacklisted
ram7: blacklisted
ram8: blacklisted
ram9: blacklisted
sda: not found in pathvec
sda: mask = 0x1f
sda: bus = 1
sda: dev_t = 8:0
sda: size = 584843264
sda: vendor = Dell
sda: product = VIRTUAL DISK
sda: rev = 1028
sda: h:b:t:l = 0:1:0:0
sda: serial =
sda: path checker = readsector0 (config file default)
sda: checker timeout = 60000 ms (sysfs setting)
sda: state = 2
sda: getuid = /sbin/scsi_id -g -u -s /block/%n (config file default)
sda: uid = 3600508e00000000082106bf5fc170406 (callout)
sda: getprio = NULL (internal default)
sda: prio = 1
sdb: not found in pathvec
sdb: mask = 0x1f
sdb: bus = 1
sdb: dev_t = 8:16
sdb: size = 2147483648
sdb: vendor = SUN
sdb: product = ZFS Storage 7320
sdb: rev = 1.0
sdb: h:b:t:l = 3:0:0:1
sdb: tgt_node_name = 0x20000024ff3b6fb9
sdb: serial =
sdb: path checker = readsector0 (config file default)
sdb: checker timeout = 60000 ms (sysfs setting)
sdb: state = 2
sdb: getuid = /sbin/scsi_id -g -u -s /block/%n (config file default)
sdb: uid = 3600144f09307fd8700004fb0babc0002 (callout)
sdb: getprio = NULL (internal default)
sdb: prio = 1
sdc: blacklisted
sdd: not found in pathvec
sdd: mask = 0x1f
sdd: bus = 1
sdd: dev_t = 8:48
sdd: size = 2147483648
sdd: vendor = SUN
sdd: product = ZFS Storage 7320
sdd: rev = 1.0
sdd: h:b:t:l = 3:0:3:1
sdd: tgt_node_name = 0x20000024ff3b6fb6
sdd: serial =
sdd: path checker = readsector0 (config file default)
sdd: checker timeout = 60000 ms (sysfs setting)
sdd: state = 2
sdd: getuid = /sbin/scsi_id -g -u -s /block/%n (config file default)
sdd: uid = 3600144f09307fd8700004fb0babc0002 (callout)
sdd: getprio = NULL (internal default)
sdd: prio = 1
sde: blacklisted
sr0: blacklisted
===== paths list =====
uuid hcil dev dev_t pri dm_st chk_st vend/pr
3600508e00000000082106bf5fc170406 0:1:0:0 sda 8:0 1 [undef][ready] Dell,VI
3600144f09307fd8700004fb0babc0002 3:0:0:1 sdb 8:16 1 [undef][ready] SUN,ZFS
3600144f09307fd8700004fb0babc0002 3:0:3:1 sdd 8:48 1 [undef][ready] SUN,ZFS
Found matching wwid [3600508e00000000082106bf5fc170406] in bindings file.
Setting alias to mpath0
sda: ownership set to mpath0
sda: not found in pathvec
sda: mask = 0xc
sda: state = 2
sda: prio = 1
mpath0: pgfailback = -2 (config file default)
mpath0: pgpolicy = multibus (config file default)
mpath0: selector = round-robin 0 (internal default)
mpath0: features = 0 (internal default)
mpath0: hwhandler = 0 (internal default)
mpath0: rr_weight = 1 (internal default)
mpath0: minio = 1000 (config file default)
mpath0: no_path_retry = -1 (config file default)
pg_timeout = NONE (internal default)
mpath0: set ACT_CREATE (map does not exist)
mpath0: failed to load map (a path might be in use)
mpath0: domap (0) failure for create/reload map
Found matching wwid [3600144f09307fd8700004fb0babc0002] in bindings file.
Setting alias to mpath1
sdb: ownership set to mpath1
sdb: not found in pathvec
sdb: mask = 0xc
sdb: state = 2
sdb: prio = 1
sdd: ownership set to mpath1
sdd: not found in pathvec
sdd: mask = 0xc
sdd: state = 2
sdd: prio = 1
mpath1: pgfailback = -2 (config file default)
mpath1: pgpolicy = multibus (config file default)
mpath1: selector = round-robin 0 (internal default)
mpath1: features = 0 (internal default)
mpath1: hwhandler = 0 (internal default)
mpath1: rr_weight = 1 (internal default)
mpath1: minio = 1000 (config file default)
mpath1: no_path_retry = -1 (config file default)
pg_timeout = NONE (internal default)
mpath1: set ACT_CREATE (map does not exist)
create: mpath1 (3600144f09307fd8700004fb0babc0002) SUN,ZFS Storage 7320
[size=1.0T][features=0][hwhandler=0][n/a]
\_ round-robin 0 [prio=2][undef]
\_ 3:0:0:1 sdb 8:16 [undef][ready]
\_ 3:0:3:1 sdd 8:48 [undef][ready]
创建文件系统并挂载：
[root@localhost mapper]# ll /dev/mapper
crw------- 1 root root 10, 63 06-11 17:13 control
brw-rw---- 1 root disk 253, 0 06-12 10:51 mpath1
brw-rw---- 1 root disk 253, 1 06-12 10:51 mpath1p1
[root@localhost mapper]# mount /dev/mapper/mpath1p1 /u1
mount: you must specify the filesystem type
[root@localhost mapper]# mkfs.ext3 /dev/mapper/mpath1p1
mke2fs 1.39 (29-May-2006)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
134217728 inodes, 268434093 blocks
13421704 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
8192 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 20 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@localhost mapper]#
[root@localhost mapper]# mount /dev/mapper/mpath1p1 /u1
[root@localhost mapper]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/sda3 223G 3.5G 208G 2% /
/dev/sda1 97M 12M 81M 13% /boot
tmpfs 7.9G 0 7.9G 0% /dev/shm
/dev/mapper/mpath1p1 1008G 200M 957G 1% /u1
将挂载信息写入/etc/fstab ：
[root@localhost vol]# cat /etc/fstab
LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
/dev/mapper/mpath1p1 /u1 ext3 defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
LABEL=SWAP-sda2 swap swap defaults 0 0
更多参考：
AIX mount RedHat的NFS
误删除/dev/dsk 和/dev/rdsk 下的文件怎么办？
Initializing the Oracle ASMLib driver: [FAILED]
1、检查系统中是否已安装multipath：
在CentOS 5中，一般情况下安装系统时multipath已经被安装，查看multipath是否安装如下：
[root@localhost vol]# rpm -qa | grep mapper
device-mapper-multipath-0.4.7-34.el5
device-mapper-1.02.39-1.el5
device-mapper-1.02.39-1.el5
device-mapper-event-1.02.39-1.el5
[root@localhost vol]#
如果没有安装，那么要安装下列rpm包（注意使用对应系统内核的rpm包）：
# rpm -ivh device-mapper-1.02.32-1.el5.i386.rpm
# rpm -ivh device-mapper-1.02.32-1.el5.x86_64.rpm
# rpm -ivh device-mapper-event-1.02.32-1.el5.x86_64.rpm
# rpm -ivh device-mapper-multipath-0.4.7-30.el5.x86_64.rpm
2、设置成开机自启动multipathd：
[root@localhost vol]# chkconfig --list | grep multipath
multipathd 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭
[root@localhost vol]# chkconfig --level 2345 multipathd on
[root@localhost vol]# chkconfig --list | grep multipathd
multipathd 0:关闭 1:关闭 2:启用 3:启用 4:启用 5:启用 6:关闭
[root@localhost vol]#
3、启动multipathd服务：
[root@localhost vol]# service multipathd status
multipathd 已停
[root@localhost vol]# service multipathd start
正在启动守护进程multipathd：[确定]
[root@localhost vol]# lsmod | grep dm_multipath
dm_multipath 56921 0
scsi_dh 42177 1 dm_multipath
dm_mod 101649 4 dm_mirror,dm_multipath,dm_raid45,dm_log
[root@localhost vol]# service multipathd status
multipathd (pid 9035) 正在运行...
[root@localhost vol]#
4、对multipath进行配置：
multipath的配置文件是/etc/multipath.conf
我们要对/dev/sdb 和 /dev/sdd 设置多路径，使用下面的命令检查：
[root@localhost mpath]# fdisk -l
Disk /dev/sda: 299.4 GB, 299439751168 bytes
255 heads, 63 sectors/track, 36404 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 102400 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 13 6375 51096576 82 Linux swap / Solaris
/dev/sda3 6375 36405 241219584 83 Linux
Disk /dev/sdb: 1099.5 GB, 1099511627776 bytes
255 heads, 63 sectors/track, 133674 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc (Sun disk label): 255 heads, 189 sectors, 47507 cylinders
Units = cylinders of 48195 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sdc3 u 0 47507 1144799932+ 5 Whole disk
/dev/sdc7 0 47507 1144799932+ 4 SunOS usr
Disk /dev/sdc3 (Sun disk label): 255 heads, 189 sectors, 47507 cylinders
Units = cylinders of 48195 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sdc3p3 u 0 47507 1144799932+ 5 Whole disk
/dev/sdc3p7 0 47507 1144799932+ 4 SunOS usr
Disk /dev/sdc7 (Sun disk label): 255 heads, 189 sectors, 47507 cylinders
Units = cylinders of 48195 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sdc7p3 u 0 47507 1144799932+ 5 Whole disk
/dev/sdc7p7 0 47507 1144799932+ 4 SunOS usr
Disk /dev/sdd: 1099.5 GB, 1099511627776 bytes
255 heads, 63 sectors/track, 133674 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sde (Sun disk label): 64 heads, 64 sectors, 8 cylinders
Units = cylinders of 4096 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sde3 u 0 8 16384 5 Whole disk
/dev/sde7 0 8 16384 4 SunOS usr
Disk /dev/sde3 (Sun disk label): 64 heads, 64 sectors, 8 cylinders
Units = cylinders of 4096 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sde3p3 u 0 8 16384 5 Whole disk
/dev/sde3p7 0 8 16384 4 SunOS usr
Disk /dev/sde7 (Sun disk label): 64 heads, 64 sectors, 8 cylinders
Units = cylinders of 4096 * 512 bytes
Device Flag Start End Blocks Id System
/dev/sde7p3 u 0 8 16384 5 Whole disk
/dev/sde7p7 0 8 16384 4 SunOS usr
备份下/etc/multipath.conf文件：
[root@localhost etc]# cp /etc/multipath.conf /etc/multipath.conf.bak
修改后的/etc/multipath.conf配置如下：
blacklist {
devnode "sdc"
devnode "sde"
}
defaults {
user_friendly_names yes
udev_dir /dev
path_grouping_policy multibus
failback immediate
no_path_retry fail
}
其它行都注释掉了。
重启multipathd服务：
[root@localhost mpath]# service multipathd restart
正在关闭multipathd 端口监控程序：[确定]
正在启动守护进程multipathd：[确定]
查看多路径：
[root@localhost mpath]# multipath -ll
mpath1 (3600144f09307fd8700004fb0babc0002) dm-0 SUN,ZFS Storage 7320
[size=1.0T][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=2][active]
\_ 3:0:0:1 sdb 8:16 [active][ready]
\_ 3:0:3:1 sdd 8:48 [active][ready]
检查安装是否正常：
[root@localhost mpath]# lsmod | grep multipath
dm_multipath 56921 2 dm_round_robin
scsi_dh 42177 1 dm_multipath
dm_mod 101649 10 dm_mirror,dm_multipath,dm_raid45,dm_log
[root@localhost mpath]# ll /dev/mpath/
lrwxrwxrwx 1 root root 7 06-12 10:27 mpath1 -> ../dm-0
[root@localhost mpath]# ll /dev/mapper/
总计 0
crw------- 1 root root 10, 63 06-11 17:13 control
brw-rw---- 1 root disk 253, 0 06-12 10:27 mpath1
[root@localhost mpath]# ll /dev/dm-0
brw-rw---- 1 root root 253, 0 06-12 10:27 /dev/dm-0
创建并格式化物理卷：
[root@localhost mpath]# pvcreate /dev/mapper/mpath1
Physical volume "/dev/mapper/mpath1" successfully created
[root@localhost mpath]# fdisk /dev/mapper/mpath1
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.
The number of cylinders for this disk is set to 133674.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-133674, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-133674, default 133674):
Using default value 133674
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 22: 无效的参数.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.
删除现有路径：
[root@localhost mapper]# multipath -F
格式化路径：
[root@localhost mapper]# multipath -v3
loop0: blacklisted
loop1: blacklisted
loop2: blacklisted
loop3: blacklisted
loop4: blacklisted
loop5: blacklisted
loop6: blacklisted
loop7: blacklisted
md0: blacklisted
ram0: blacklisted
ram10: blacklisted
ram11: blacklisted
ram12: blacklisted
ram13: blacklisted
ram14: blacklisted
ram15: blacklisted
ram1: blacklisted
ram2: blacklisted
ram3: blacklisted
ram4: blacklisted
ram5: blacklisted
ram6: blacklisted
ram7: blacklisted
ram8: blacklisted
ram9: blacklisted
sda: not found in pathvec
sda: mask = 0x1f
sda: bus = 1
sda: dev_t = 8:0
sda: size = 584843264
sda: vendor = Dell
sda: product = VIRTUAL DISK
sda: rev = 1028
sda: h:b:t:l = 0:1:0:0
sda: serial =
sda: path checker = readsector0 (config file default)
sda: checker timeout = 60000 ms (sysfs setting)
sda: state = 2
sda: getuid = /sbin/scsi_id -g -u -s /block/%n (config file default)
sda: uid = 3600508e00000000082106bf5fc170406 (callout)
sda: getprio = NULL (internal default)
sda: prio = 1
sdb: not found in pathvec
sdb: mask = 0x1f
sdb: bus = 1
sdb: dev_t = 8:16
sdb: size = 2147483648
sdb: vendor = SUN
sdb: product = ZFS Storage 7320
sdb: rev = 1.0
sdb: h:b:t:l = 3:0:0:1
sdb: tgt_node_name = 0x20000024ff3b6fb9
sdb: serial =
sdb: path checker = readsector0 (config file default)
sdb: checker timeout = 60000 ms (sysfs setting)
sdb: state = 2
sdb: getuid = /sbin/scsi_id -g -u -s /block/%n (config file default)
sdb: uid = 3600144f09307fd8700004fb0babc0002 (callout)
sdb: getprio = NULL (internal default)
sdb: prio = 1
sdc: blacklisted
sdd: not found in pathvec
sdd: mask = 0x1f
sdd: bus = 1
sdd: dev_t = 8:48
sdd: size = 2147483648
sdd: vendor = SUN
sdd: product = ZFS Storage 7320
sdd: rev = 1.0
sdd: h:b:t:l = 3:0:3:1
sdd: tgt_node_name = 0x20000024ff3b6fb6
sdd: serial =
sdd: path checker = readsector0 (config file default)
sdd: checker timeout = 60000 ms (sysfs setting)
sdd: state = 2
sdd: getuid = /sbin/scsi_id -g -u -s /block/%n (config file default)
sdd: uid = 3600144f09307fd8700004fb0babc0002 (callout)
sdd: getprio = NULL (internal default)
sdd: prio = 1
sde: blacklisted
sr0: blacklisted
===== paths list =====
uuid hcil dev dev_t pri dm_st chk_st vend/pr
3600508e00000000082106bf5fc170406 0:1:0:0 sda 8:0 1 [undef][ready] Dell,VI
3600144f09307fd8700004fb0babc0002 3:0:0:1 sdb 8:16 1 [undef][ready] SUN,ZFS
3600144f09307fd8700004fb0babc0002 3:0:3:1 sdd 8:48 1 [undef][ready] SUN,ZFS
Found matching wwid [3600508e00000000082106bf5fc170406] in bindings file.
Setting alias to mpath0
sda: ownership set to mpath0
sda: not found in pathvec
sda: mask = 0xc
sda: state = 2
sda: prio = 1
mpath0: pgfailback = -2 (config file default)
mpath0: pgpolicy = multibus (config file default)
mpath0: selector = round-robin 0 (internal default)
mpath0: features = 0 (internal default)
mpath0: hwhandler = 0 (internal default)
mpath0: rr_weight = 1 (internal default)
mpath0: minio = 1000 (config file default)
mpath0: no_path_retry = -1 (config file default)
pg_timeout = NONE (internal default)
mpath0: set ACT_CREATE (map does not exist)
mpath0: failed to load map (a path might be in use)
mpath0: domap (0) failure for create/reload map
Found matching wwid [3600144f09307fd8700004fb0babc0002] in bindings file.
Setting alias to mpath1
sdb: ownership set to mpath1
sdb: not found in pathvec
sdb: mask = 0xc
sdb: state = 2
sdb: prio = 1
sdd: ownership set to mpath1
sdd: not found in pathvec
sdd: mask = 0xc
sdd: state = 2
sdd: prio = 1
mpath1: pgfailback = -2 (config file default)
mpath1: pgpolicy = multibus (config file default)
mpath1: selector = round-robin 0 (internal default)
mpath1: features = 0 (internal default)
mpath1: hwhandler = 0 (internal default)
mpath1: rr_weight = 1 (internal default)
mpath1: minio = 1000 (config file default)
mpath1: no_path_retry = -1 (config file default)
pg_timeout = NONE (internal default)
mpath1: set ACT_CREATE (map does not exist)
create: mpath1 (3600144f09307fd8700004fb0babc0002) SUN,ZFS Storage 7320
[size=1.0T][features=0][hwhandler=0][n/a]
\_ round-robin 0 [prio=2][undef]
\_ 3:0:0:1 sdb 8:16 [undef][ready]
\_ 3:0:3:1 sdd 8:48 [undef][ready]
创建文件系统并挂载：
[root@localhost mapper]# ll /dev/mapper
crw------- 1 root root 10, 63 06-11 17:13 control
brw-rw---- 1 root disk 253, 0 06-12 10:51 mpath1
brw-rw---- 1 root disk 253, 1 06-12 10:51 mpath1p1
[root@localhost mapper]# mount /dev/mapper/mpath1p1 /u1
mount: you must specify the filesystem type
[root@localhost mapper]# mkfs.ext3 /dev/mapper/mpath1p1
mke2fs 1.39 (29-May-2006)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
134217728 inodes, 268434093 blocks
13421704 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
8192 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 20 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@localhost mapper]#
[root@localhost mapper]# mount /dev/mapper/mpath1p1 /u1
[root@localhost mapper]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/sda3 223G 3.5G 208G 2% /
/dev/sda1 97M 12M 81M 13% /boot
tmpfs 7.9G 0 7.9G 0% /dev/shm
/dev/mapper/mpath1p1 1008G 200M 957G 1% /u1
将挂载信息写入/etc/fstab ：
[root@localhost vol]# cat /etc/fstab
LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
/dev/mapper/mpath1p1 /u1 ext3 defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
LABEL=SWAP-sda2 swap swap defaults 0 0
更多参考：
AIX mount RedHat的NFS
误删除/dev/dsk 和/dev/rdsk 下的文件怎么办？unary operator expected
bash: /root/.bash_profile: line 15: syntax error: unexpected end of file
Linux下如何查看文件秒级修改及访问时间
EM乱码解决
linux里端口转发
windows xp 下使用FileZilla密钥
java.net.SocketException: Too many open files 问题的解决办法
UNExcepted inconsistency; run fsck manually
如何修改linux的mac地址？
mysqldump: Got error: 1066: Not unique table/alias
rsync详解一
rsync详解二
更改mysql的默认安装目录
httpd: apr_sockaddr_info_get() failed for centos1113
Real domain name required for sender address
Connection refused by [127.0.0.1]
MySQL bin_log文件占用空间太大
Centos 5 多路径配置步骤
rpc mount export: RPC: Unable to receive; errno = No route to host
nohup和screen的比较
vmware workstation 8 共享磁盘
Initializing the Oracle ASMLib driver: [FAILED]
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