存储管理员告诉我，他从 SAN 中将一个 3TB 的驱动器放到我的服务器上，并要求我安装它。我唯一知道的信息是它位于 LUN 1 上，磁盘为 3TB。
多路径已设置，并且我已安装 QLogic 驱动器。但我不知道现在该做什么... 磁盘太多了，我怎么才能找到要安装的正确磁盘？我告诉存储人员我在 SAN 上看到了所有内容，但他只说“我不懂 Linux”。我不知道要问什么问题才能确定要安装哪个磁盘。
这是输出fsdisk -l：
Disk /dev/cciss/c0d0: 299.9 GB, 299959511040 bytes
255 heads, 63 sectors/track, 36468 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 36468 292824787+ 8e Linux LVM
Disk /dev/dm-0: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-1: 267.6 GB, 267630149632 bytes
255 heads, 63 sectors/track, 32537 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sda: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdb: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdc: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdd: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sde: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sde1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdf: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdg: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdh: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdh1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdi: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdj: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdk: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdk1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdl: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdm: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdn: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdn1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdo: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdp: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdq: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdq1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdr: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sds: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdt: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdt1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdu: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdv: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdw: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdw1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdx: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdy: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdz: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdz1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdaa: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdab: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdac: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdac1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdad: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdae: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdaf: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdaf1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdag: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdah: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdai: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdai1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdaj: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdak: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdal: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdal1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdam: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdan: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdao: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdao1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdap: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdaq: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdar: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdar1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdas: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdat: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/sdau: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdau1 1 267350 2147483647+ ee EFI GPT
Disk /dev/sdav: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/dm-2: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Disk /dev/dm-3: 3298.5 GB, 3298534883328 bytes
255 heads, 63 sectors/track, 401024 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/dm-3p1 1 267350 2147483647+ ee EFI GPT
Disk /dev/dm-4: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
fc_主机：
cat /sys/class/fc_host/host[1-4]/port_name
0x500143802424eb38
0x500143802424eb3a
0x500143802424ec18
0x500143802424ec1a
多路径：
# multipath -ll
mpath2 (360a98000572d505a6834737741386576) dm-4 NETAPP,LUN
size=100G features='3 queue_if_no_path pg_init_retries 50' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=4 status=active
| |- 4:0:2:0 sdaq 66:160 active ready running
| |- 4:0:1:0 sdan 66:112 active ready running
| |- 3:0:3:0 sdah 66:16 active ready running
| |- 3:0:1:0 sdab 65:176 active ready running
| |- 1:0:3:0 sdv 65:80 active ready running
| |- 1:0:1:0 sdp 8:240 active ready running
| |- 2:0:2:0 sdg 8:96 active ready running
| `- 2:0:1:0 sdd 8:48 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
|- 4:0:3:0 sdat 66:208 active ready running
|- 4:0:0:0 sdak 66:64 active ready running
|- 3:0:2:0 sdae 65:224 active ready running
|- 3:0:0:0 sdy 65:128 active ready running
|- 1:0:2:0 sds 65:32 active ready running
|- 1:0:0:0 sdm 8:192 active ready running
|- 2:0:3:0 sdj 8:144 active ready running
`- 2:0:0:0 sda 8:0 active ready running
mpath1 (360a98000572d505a6834737741434372) dm-3 NETAPP,LUN
size=3.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=4 status=active
| |- 4:0:2:1 sdar 66:176 active ready running
| |- 4:0:1:1 sdao 66:128 active ready running
| |- 3:0:3:1 sdai 66:32 active ready running
| |- 3:0:1:1 sdac 65:192 active ready running
| |- 1:0:3:1 sdw 65:96 active ready running
| |- 1:0:1:1 sdq 65:0 active ready running
| |- 2:0:2:1 sdh 8:112 active ready running
| `- 2:0:1:1 sde 8:64 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
|- 4:0:3:1 sdau 66:224 active ready running
|- 4:0:0:1 sdal 66:80 active ready running
|- 3:0:2:1 sdaf 65:240 active ready running
|- 3:0:0:1 sdz 65:144 active ready running
|- 1:0:2:1 sdt 65:48 active ready running
|- 1:0:0:1 sdn 8:208 active ready running
|- 2:0:3:1 sdk 8:160 active ready running
`- 2:0:0:1 sdb 8:16 active ready running
mpath0 (360a98000572d505a6834737741457870) dm-2 NETAPP,LUN
size=200G features='3 queue_if_no_path pg_init_retries 50' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=4 status=active
| |- 4:0:2:2 sdas 66:192 active ready running
| |- 4:0:1:2 sdap 66:144 active ready running
| |- 3:0:3:2 sdaj 66:48 active ready running
| |- 3:0:1:2 sdad 65:208 active ready running
| |- 1:0:3:2 sdx 65:112 active ready running
| |- 1:0:1:2 sdr 65:16 active ready running
| |- 2:0:2:2 sdi 8:128 active ready running
| `- 2:0:1:2 sdf 8:80 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
|- 4:0:3:2 sdav 66:240 active ready running
|- 4:0:0:2 sdam 66:96 active ready running
|- 3:0:2:2 sdag 66:0 active ready running
|- 3:0:0:2 sdaa 65:160 active ready running
|- 1:0:2:2 sdu 65:64 active ready running
|- 1:0:0:2 sdo 8:224 active ready running
|- 2:0:3:2 sdl 8:176 active ready running
`- 2:0:0:2 sdc 8:32 active ready running
dm设置：
# dmsetup ls
mpath2 (253, 4)
mpath1 (253, 3)
mpath0 (253, 2)
VolGroup00-LogVol01 (253, 1)
VolGroup00-LogVol00 (253, 0)
我以前从来没有做过这样的事情，所以请不要责怪我。我只是想知道要问存储管理员什么问题，以及使用什么命令来找到要格式化和安装的正确驱动器。
答案1
不要使用/dev/sd*，因为它们只映射到单一路径。
使用/dev/mpath*设备（或如 的输出所示multipath -l）。
输出multipath -ll显示您要使用的磁盘是/dev/mapper/mpath1
在其上创建文件系统、格式化、分区或进行任何你喜欢的操作。只需不使用这些/dev/sd*设备。
查看你的输出，
mpath1 (360a98000572d505a6834737741434372) dm-3 NETAPP,LUN
size=3.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=4 status=active
| |- 4:0:2:1 sdar 66:176 active ready running
| |- 4:0:1:1 sdao 66:128 active ready running
| |- 3:0:3:1 sdai 66:32 active ready running
| |- 3:0:1:1 sdac 65:192 active ready running
| |- 1:0:3:1 sdw 65:96 active ready running
| |- 1:0:1:1 sdq 65:0 active ready running
| |- 2:0:2:1 sdh 8:112 active ready running
| `- 2:0:1:1 sde 8:64 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
|- 4:0:3:1 sdau 66:224 active ready running
|- 4:0:0:1 sdal 66:80 active ready running
|- 3:0:2:1 sdaf 65:240 active ready running
|- 3:0:0:1 sdz 65:144 active ready running
|- 1:0:2:1 sdt 65:48 active ready running
|- 1:0:0:1 sdn 8:208 active ready running
|- 2:0:3:1 sdk 8:160 active ready running
`- 2:0:0:1 sdb 8:16 active ready running
组成设备mpath1代表到相同磁盘的单一路径（多路径通过查看 WWID 等来弄清楚这一点）。这意味着sd*输出中的所有磁盘都指向同一设备，但使用不同的路径到达该设备。这是出于冗余和有时是出于性能原因。