|
VMware虛擬機(jī)（Linux）中，我們的Linux服務(wù)器可能擁有多個(gè)磁盤（或者叫虛擬磁盤），如下所示，這個(gè)服務(wù)器的磁盤有硬盤1、硬盤2、…………硬盤10總共10塊硬盤。
而Linux系統(tǒng)中，磁盤中對應(yīng)的設(shè)備如下
[root@mylnx01 ~]# ls -lrt /dev/sd*brw-r----- 1 root disk 8, 0 Apr 30 09:53 /dev/sda brw-r----- 1 root disk 8, 3 Apr 30 09:53 /dev/sda3 brw-r----- 1 root disk 8, 2 Apr 30 09:53 /dev/sda2 brw-r----- 1 root disk 8, 21 Apr 30 09:53 /dev/sdb5 brw-r----- 1 root disk 8, 18 Apr 30 09:53 /dev/sdb2 brw-r----- 1 root disk 8, 17 Apr 30 09:53 /dev/sdb1 brw-r----- 1 root disk 8, 16 Apr 30 09:53 /dev/sdb brw-r----- 1 root disk 8, 37 Apr 30 09:53 /dev/sdc5 brw-r----- 1 root disk 8, 34 Apr 30 09:53 /dev/sdc2 brw-r----- 1 root disk 8, 33 Apr 30 09:53 /dev/sdc1 brw-r----- 1 root disk 8, 32 Apr 30 09:53 /dev/sdc brw-r----- 1 root disk 8, 64 Apr 30 09:53 /dev/sde brw-r----- 1 root disk 8, 49 Apr 30 09:53 /dev/sdd1 brw-r----- 1 root disk 8, 48 Apr 30 09:53 /dev/sdd brw-r----- 1 root disk 8, 82 Apr 30 09:53 /dev/sdf2 brw-r----- 1 root disk 8, 81 Apr 30 09:53 /dev/sdf1 brw-r----- 1 root disk 8, 80 Apr 30 09:53 /dev/sdf brw-r----- 1 root disk 8, 69 Apr 30 09:53 /dev/sde5 brw-r----- 1 root disk 8, 65 Apr 30 09:53 /dev/sde1 brw-r----- 1 root disk 8, 113 Apr 30 09:53 /dev/sdh1 brw-r----- 1 root disk 8, 112 Apr 30 09:53 /dev/sdh brw-r----- 1 root disk 8, 96 Apr 30 09:53 /dev/sdg brw-r----- 1 root disk 8, 85 Apr 30 09:53 /dev/sdf5 brw-r----- 1 root disk 8, 129 Apr 30 09:53 /dev/sdi1 brw-r----- 1 root disk 8, 128 Apr 30 09:53 /dev/sdi brw-r----- 1 root disk 8, 101 Apr 30 09:53 /dev/sdg5 brw-r----- 1 root disk 8, 97 Apr 30 09:53 /dev/sdg1 brw-r----- 1 root disk 8, 130 Apr 30 09:53 /dev/sdi2 brw-r----- 1 root disk 8, 147 Apr 30 09:53 /dev/sdj3 brw-r----- 1 root disk 8, 146 Apr 30 09:53 /dev/sdj2 brw-r----- 1 root disk 8, 145 Apr 30 09:53 /dev/sdj1 brw-r----- 1 root disk 8, 144 Apr 30 09:53 /dev/sdj brw-r----- 1 root disk 8, 152 Apr 30 09:53 /dev/sdj8 brw-r----- 1 root disk 8, 151 Apr 30 09:53 /dev/sdj7 brw-r----- 1 root disk 8, 150 Apr 30 09:53 /dev/sdj6 brw-r----- 1 root disk 8, 149 Apr 30 09:53 /dev/sdj5 brw-r----- 1 root disk 8, 148 Apr 30 09:53 /dev/sdj4 brw-r----- 1 root disk 8, 153 Apr 30 09:53 /dev/sdj9 brw-r----- 1 root disk 8, 1 Apr 30 09:53 /dev/sda1
那么我們?nèi)绾握页?dev/sdj對應(yīng)VMware中的哪個(gè)磁盤呢？ 相信很多同學(xué)可能想通過磁盤大小來判斷，但是呢，這個(gè)通過磁盤大小不好判斷或者判斷不精準(zhǔn)，主要有下面一些因素：
1：兩邊計(jì)算磁盤大小的方式不一樣?？吹降拇疟P大小有點(diǎn)出入。
2：可能存在相同大小的磁盤，此時(shí)你怎么判斷呢？
那么有沒有通過某個(gè)標(biāo)識(shí)來判斷呢？根據(jù)SCSI標(biāo)準(zhǔn)，每個(gè)SCSI磁盤都有一個(gè)WWID，類似于網(wǎng)卡的MAC地址，而且是獨(dú)一無二。Linux系統(tǒng)上/dev/disk/by-id目錄包含每個(gè)SCSI磁盤WWID訪問路徑。
[root@KerryDB ~]# ll /dev/disk/by-id/total 0 lrwxrwxrwx. 1 root root 9 Apr 11 09:25 ata-ST500DM002-1BD142_Z6EA17FP -> ../../sda lrwxrwxrwx. 1 root root 10 Apr 11 09:25 ata-ST500DM002-1BD142_Z6EA17FP-part1 -> ../../sda1 lrwxrwxrwx. 1 root root 10 Apr 11 09:25 ata-ST500DM002-1BD142_Z6EA17FP-part2 -> ../../sda2 lrwxrwxrwx. 1 root root 10 Apr 11 09:25 ata-ST500DM002-1BD142_Z6EA17FP-part3 -> ../../sda3 lrwxrwxrwx. 1 root root 10 Mar 10 14:29 dm-name-centos-home -> ../../dm-2 lrwxrwxrwx. 1 root root 10 Mar 10 14:29 dm-name-centos-root -> ../../dm-0 lrwxrwxrwx. 1 root root 10 Mar 10 14:29 dm-name-centos-swap -> ../../dm-1 lrwxrwxrwx. 1 root root 10 Mar 10 14:29 dm-uuid-LVM-OoLL2Ne7hVrlu1rWFZRicmPrEZGxlZhQ2GwVhfhZrdLWmRZ3KuKGNJJqskLn2noy -> ../../dm-0 lrwxrwxrwx. 1 root root 10 Mar 10 14:29 dm-uuid-LVM-OoLL2Ne7hVrlu1rWFZRicmPrEZGxlZhQNALIUTdrhqV42RQNW8jaImopDuEPs5b3 -> ../../dm-1 lrwxrwxrwx. 1 root root 10 Mar 10 14:29 dm-uuid-LVM-OoLL2Ne7hVrlu1rWFZRicmPrEZGxlZhQybFeXSOtclTjcV0dS9tKiwA1IVBwxnrK -> ../../dm-2 lrwxrwxrwx. 1 root root 10 Apr 11 09:25 lvm-pv-uuid-FAYN5y-YdiR-CywU-1vDf-Btz6-dkyt-TNy8ee -> ../../sda3 lrwxrwxrwx. 1 root root 9 Apr 11 09:25 wwn-0x5000c5007911cd0c -> ../../sda lrwxrwxrwx. 1 root root 10 Apr 11 09:25 wwn-0x5000c5007911cd0c-part1 -> ../../sda1 lrwxrwxrwx. 1 root root 10 Apr 11 09:25 wwn-0x5000c5007911cd0c-part2 -> ../../sda2 lrwxrwxrwx. 1 root root 10 Apr 11 09:25 wwn-0x5000c5007911cd0c-part3 -> ../../sda3
但是當(dāng)前環(huán)境下，VMware虛擬機(jī)（Linux）默認(rèn)情況下沒有開啟這個(gè)選項(xiàng)。
# ll /dev/disk/by-idls: /dev/disk/by-id: No such file or directory # cd /dev/disk# ls -lrttotal 0 drwxr-xr-x 2 root root 60 May 3 19:35 by-uuid drwxr-xr-x 2 root root 60 May 3 19:35 by-label drwxr-xr-x 2 root root 640 May 3 19:35 by-path
而且在VMware vSphere Client連上VMware控制臺(tái)，你會(huì)發(fā)現(xiàn)這里沒有提供硬盤的WWID信息，即使你在Linux中找到設(shè)備的WWID信息，但是在VMware控制臺(tái)也看不到對應(yīng)的WWID信息，我們還可以通過計(jì)算機(jī)的SCSI編號來判斷，SCSI 可適用于許多設(shè)備（包括隨機(jī)存取設(shè)備，比如磁盤和像磁帶這樣的順序存儲(chǔ)設(shè)備），如下截圖所示，磁盤有個(gè)顯示是通過SCSI控制器管理磁盤的，硬盤9對應(yīng)的為SCSI（0:11）
[root@mylnx01 ~]# ll /dev/disk/by-path | grep '0:11'lrwxrwxrwx 1 root root 9 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0 -> ../../sdj lrwxrwxrwx 1 root root 10 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0-part1 -> ../../sdj1 lrwxrwxrwx 1 root root 10 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0-part2 -> ../../sdj2 lrwxrwxrwx 1 root root 10 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0-part3 -> ../../sdj3 lrwxrwxrwx 1 root root 10 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0-part4 -> ../../sdj4 lrwxrwxrwx 1 root root 10 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0-part5 -> ../../sdj5 lrwxrwxrwx 1 root root 10 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0-part6 -> ../../sdj6 lrwxrwxrwx 1 root root 10 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0-part7 -> ../../sdj7 lrwxrwxrwx 1 root root 10 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0-part8 -> ../../sdj8 lrwxrwxrwx 1 root root 10 Apr 30 09:53 pci-0000:00:10.0-scsi-0:0:11:0-part9 -> ../../sdj9 [root@mylnx01 ~]# ls -l /dev/sdj*brw-r----- 1 root disk 8, 144 Apr 30 09:53 /dev/sdj brw-r----- 1 root disk 8, 145 Apr 30 09:53 /dev/sdj1 brw-r----- 1 root disk 8, 146 Apr 30 09:53 /dev/sdj2 brw-r----- 1 root disk 8, 147 Apr 30 09:53 /dev/sdj3 brw-r----- 1 root disk 8, 148 Apr 30 09:53 /dev/sdj4 brw-r----- 1 root disk 8, 149 Apr 30 09:53 /dev/sdj5 brw-r----- 1 root disk 8, 150 Apr 30 09:53 /dev/sdj6 brw-r----- 1 root disk 8, 151 Apr 30 09:53 /dev/sdj7 brw-r----- 1 root disk 8, 152 Apr 30 09:53 /dev/sdj8 brw-r----- 1 root disk 8, 153 Apr 30 09:53 /dev/sdj9
如上所示，我們通過上面命令的輸出信息就可以判斷磁盤9對應(yīng)Linux下的/dev/sdj這個(gè)設(shè)備。
|
|
|
