linux下如何辨认多个存储设备

linux_freshman

我现在起来一个板子，下面的存储设备有硬盘阵列，还有USB和SD卡。
已知硬盘在 /dev/cciss/下有c0d0    c0d0p1  c0d0p2
/dev/下还有sda   sda1  sdb   sdb1  sdb2

现在的问题是如何区分sda是USB还是SD卡。
板子是通过服务器ssh远程登录的，所以不能通过简单的插拔来辨别:wink:

请高手帮忙解答一下，多谢了！

linux_freshman

dmesg | grep usb
dmesg | grep sd  似乎也没有什么帮助。

fleyahjj

如果你的读卡器是usb读卡器，可以用lsusb命令查看一下

root@fleya-laptop:/tmp# lsusb
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 069: ID 045e:00a4 Microsoft Corp.
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 096: ID 058f:6335 Alcor Micro Corp. SD/MMC Card Reader
Bus 001 Device 003: ID 04f2:b071 Chicony Electronics Co., Ltd 2.0M UVC WebCam / CNF7129
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 0b05:b700 ASUSTek Computer, Inc. Broadcom Bluetooth 2.1
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

sd卡Device 096

dmesg > /tmp/a

在/tmp/a文件中搜索found at 96

[97280.788833] usb-storage: device found at 96
[97280.788840] usb-storage: waiting for device to settle before scanning
[97285.791894] usb-storage: device scan complete
[97285.792606] scsi 11:0:0:0: Direct-Access     Single   Flash Reader     1.00 PQ: 0 ANSI: 0
[97285.794000] sd 11:0:0:0: Attached scsi generic sg1 type 0
[97286.270343] sd 11:0:0:0: [sdb] 7861248 512-byte logical blocks: (4.02 GB/3.74 GiB)
[97286.277514] sd 11:0:0:0: [sdb] Write Protect is off
[97286.277528] sd 11:0:0:0: [sdb] Mode Sense: 03 00 00 00
[97286.277536] sd 11:0:0:0: [sdb] Assuming drive cache: write through
[97286.302378] sd 11:0:0:0: [sdb] Assuming drive cache: write through
[97286.302399]  sdb: sdb1
[97286.327111] sd 11:0:0:0: [sdb] Assuming drive cache: write through
[97286.327129] sd 11:0:0:0: [sdb] Attached SCSI removable disk

由上信息可知sd卡是sdb

linux_freshman

1 .lsusb
root@hp:/tmp> lsusb
Bus 006 Device 003: ID 03f0:1327 Hewlett-Packard
Bus 006 Device 002: ID 03f0:1027 Hewlett-Packard
Bus 006 Device 001: ID 1d6b:0001  
Bus 001 Device 003: ID 058f:6387 Alcor Micro Corp. Transcend JetFlash 110 USB 2.0 Flash Drive (2GB)
Bus 001 Device 002: ID 058f:6335 Alcor Micro Corp.
Bus 001 Device 001: ID 1d6b:0002  
Bus 005 Device 001: ID 1d6b:0001  
Bus 004 Device 001: ID 1d6b:0001  
Bus 003 Device 001: ID 1d6b:0001  
Bus 002 Device 001: ID 1d6b:0001  

没看到 SD卡的device号96 根据你的提示，由这个似乎应该在/tmp/a 下/found at 3 或者/found at 2
Bus 001 Device 003: ID 058f:6387 Alcor Micro Corp. Transcend JetFlash 110 USB 2.0 Flash Drive (2GB)
Bus 001 Device 002: ID 058f:6335 Alcor Micro Corp.

2.dmesg > /tmp/a; vi /tmp/a
查找found at 3 或者 found at 2
usb usb6: configuration #1 chosen from 1 choice
hub 6-0:1.0: USB hub found
hub 6-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
scsi0 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
scsi1 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
usb 6-1: new full speed USB device using uhci_hcd and address 2
usb 6-1: configuration #1 chosen from 1 choice
usb 6-2: new full speed USB device using uhci_hcd and address 3
usb 6-2: configuration #1 chosen from 1 choice
hub 6-2:1.0: USB hub found
hub 6-2:1.0: 7 ports detected

似乎没有看出来SD卡是哪个

3.还是在/tmp/a下查找 sd
scsi 0:0:0:0: Direct-Access     Single   Flash Reader     1.00 PQ: 0 ANSI: 0
scsi 1:0:0:0: Direct-Access     JetFlash TS1GJFV30        8.07 PQ: 0 ANSI: 2
  
sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 03 00 00 00
sd 1:0:0:0: [sdb] Assuming drive cache: write through
sd 1:0:0:0: [sdb] 2002944 512-byte hardware sectors (1026 MB)
sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 03 00 00 00
sd 1:0:0:0: [sdb] Assuming drive cache: write through
sdb: sdb1 sdb2
sd 1:0:0:0: [sdb] Attached SCSI removable disk
usb-storage: device scan complete
sd 0:0:0:0: [sda] 3962880 512-byte hardware sectors (2029 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] 3962880 512-byte hardware sectors (2029 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 0:0:0:0: [sda] Attached SCSI removable disk
usb-storage: device scan complete

没有像你提示的那样找出SD卡是sdb
但是根据  Bus 001 Device 003: ID 058f:6387 Alcor Micro Corp. Transcend JetFlash 110 USB 2.0 Flash Drive (2GB)
和        sd 1:0:0:0: [sdb] 2002944 512-byte hardware sectors (1026 MB)
由其容量为2G似乎可以确定SD是sdb,不知是否准确。

fleyahjj

scsi0 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
scsi1 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3

scsi0 是模拟的device 2 设备
scsi1 是模拟的device 3 设备 （sd卡）

scsi 0:0:0:0: Direct-Access     Single   Flash Reader     1.00 PQ: 0 ANSI: 0   (scsi0)
scsi 1:0:0:0: Direct-Access     JetFlash TS1GJFV30        8.07 PQ: 0 ANSI: 2  (scsi1)

sdb: sdb1 sdb2
sd 1:0:0:0: [sdb] Attached SCSI removable disk  

（sdb 是scsi1 设备）也就是sd卡 ，只不过信息输出顺序不一致：）

linux_freshman

多谢fleya的解答！