关于HP EVA 4400在linux平台的问题。

发布于 2022-09-09 23:49:24 字数 7927 浏览 24 评论 4

本帖最后由 xuheng0628 于 2010-07-25 22:36 编辑

HP EVA 4400磁阵直连的 2台服务器，
服务器HBA卡是AE312A 用的redhat 5.4自带的HBA驱动，
服务器各装了HPDMmultipath-4.4.0聚合软件。
安装完软件，没有配置/etc/multipath.conf （HP800说，4.0以上版本已经不需要配置），开启multipath服务。开机自动启动。
聚合之后，
multipath -ll
[root@rac2 ~]# multipath -ll
mpath2 (3600143800648ccb70000500000290000) dm-4 HP,HSV300
[size=550G][features=1 queue_if_no_path][hwhandler=0][rw]
_ round-robin 0 [prio=50][active]
_ 2:0:0:3 sdc 8:32  [active][ready]
_ round-robin 0 [prio=10][enabled]
_ 3:0:0:3 sdf 8:80  [active][ready]
mpath1 (3600143800648ccb70000500000250000) dm-3 HP,HSV300
[size=550G][features=1 queue_if_no_path][hwhandler=0][rw]
_ round-robin 0 [prio=50][active]
_ 2:0:0:2 sdb 8:16  [active][ready]
_ round-robin 0 [prio=10][enabled]
_ 3:0:0:2 sde 8:64  [active][ready]
mpath0 (3600143800648ccb70000500000210000) dm-2 HP,HSV300
[size=550G][features=1 queue_if_no_path][hwhandler=0][rw]
_ round-robin 0 [prio=50][active]
_ 2:0:0:1 sda 8:0 [active][ready]
_ round-robin 0 [prio=10][enabled]
_ 3:0:0:1 sdd 8:48  [active][ready]

HP800提供的文档上写着可以fdisk /dev/mapper/mpath* and use them as RAW or FS

但是fdisk /dev/mapper/mpath* 建立400M 主分区时，（建立RAW裸设备）
[root@rac2 ~]# fdisk /dev/mapper/
control VolGroup01-LogVol00
mpath0 mpath1 mpath2 VolGroup01-LogVol01
[root@rac2 ~]# fdisk /dev/mapper/mpath0
The number of cylinders for this disk is set to 71797.
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)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (58445-71797, default 58445):
Using default value 58445
Last cylinder or +size or +sizeM or +sizeK (58445-71797, default 71797): +400M

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: Invalid argument. 警告：重新读取分区表失败错误22：无效参数
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.
[root@rac2 ~]#

fdisk -l 查看分区表信息

[root@rac2 ~]# fdisk -l

Disk /dev/cciss/c0d0: 146.7 GB, 146778685440 bytes
255 heads, 63 sectors/track, 17844 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot    Start       End    Blocks Id  System
/dev/cciss/c0d0p1 *          1       13    104391 83  Linux
/dev/cciss/c0d0p2             14    17844 143227507+  8e  Linux LVM

Disk /dev/sda: 590.5 GB, 590558003200 bytes
255 heads, 63 sectors/track, 71797 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 1 50 401593+ 83 Linux

Disk /dev/sdb: 590.5 GB, 590558003200 bytes
255 heads, 63 sectors/track, 71797 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes