我有一个带有多个磁盘和分区的服务器.对于特定磁盘,我想知道它是本地还是SAN.
我运行了一些命令：
[root@server]# ls -l /sys/block/*/device lrwxrwxrwx 1 root root 0 Jul 22 12:15 /sys/block/hda/device -> ../../devices/pci0000:00/0000:00:1f.1/ide0/0.0 lrwxrwxrwx 1 root root 0 Jul 22 12:15 /sys/block/sda/device -> ../../devices/pci0000:00/0000:00:03.0/0000:01:00.0/0000:02:0e.0/host0/target0:2:0/0:2:0:0 lrwxrwxrwx 1 root root 0 Jul 22 12:15 /sys/block/sdb/device -> ../../devices/pci0000:00/0000:00:03.0/0000:01:00.0/0000:02:0e.0/host0/target0:2:1/0:2:1:0 lrwxrwxrwx 1 root root 0 Jul 22 12:15 /sys/block/sdc/device -> ../../devices/platform/host3/target3:0:0/3:0:0:0
我当然知道哪个设备是本地设备,哪个设备连接到SAN？
解决方法
你可以采取几种不同的方法.对于您的特定设置,有些可能更好或更差.请记住,严格来说,光纤通道驱动器并不一定意味着“SAN”或“存储阵列”.它可能只是一个实际的FC连接驱动器.
您可以检查驱动器所在的SCSI主机,如果您知道所有服务器都具有(即)QLogic卡,则可以进行过滤：
# lsscsi -H; lsscsi -g [0] qla2xxx [1] qla2xxx [2] mptsas [3] ata_piix [4] ata_piix [0:0:0:0] disk IBM 1814 FAStT 0916 /dev/sda /dev/sg0 [0:0:0:1] disk IBM 1814 FAStT 0916 /dev/sdb /dev/sg1 [0:0:0:2] disk IBM 1814 FAStT 0916 /dev/sdd /dev/sg3 [0:0:0:31] disk IBM Universal Xport 0916 - /dev/sg4 [1:0:0:0] disk IBM 1814 FAStT 0916 /dev/sdc /dev/sg2 [1:0:0:1] disk IBM 1814 FAStT 0916 /dev/sde /dev/sg5 [1:0:0:2] disk IBM 1814 FAStT 0916 /dev/sdf /dev/sg6 [1:0:0:31] disk IBM Universal Xport 0916 - /dev/sg7
检查有关设备的di VPD页面,查看它使用的协议.
# sg_vpd -p di /dev/sda
Device Identification VPD page:
Addressed logical unit:
designator type: NAA,code_set: Binary
0x600a0b80002664e2000026c349dda1ee
Target port:
designator type: NAA,code_set: Binary
transport: Fibre Channel (FCP-2)
0x200600a0b8266f7f
designator type: Relative target port,code_set: Binary
transport: Fibre Channel (FCP-2)
Relative target port: 0x1
Target device that contains addressed lu:
designator type: NAA,code_set: Binary
transport: Fibre Channel (FCP-2)
0x200600a0b8266f7e
使用特定存储阵列的路径管理工具检查设备是否在该阵列上.例如：
# sg_rdac /dev/sda
RDAC Legacy page
Controller serial: 1T63717016
Alternate controller serial: 1T64109650
RDAC mode (redundant processor): alternate controller present; Dual active mode
RDAC mode (alternate processor): alternate controller present; Dual active mode
Quiescence timeout: 75
RDAC option 0x6
LUN Table:
0: a a x x x x x x
1: x x x x x x x x
2: x x x x x x x x
3: x x x x x x x x
与：
# sg_rdac /dev/sda invalid field in cdb (perhaps subpages or page control (PC) not supported)
