Usb

伺服器 USB 硬碟未在 /dev 中列出,但在 lsusb 中出現

  • April 10, 2014

我有幾台使用 2TB Seagate GoFlex 外置硬碟進行基本 cPanel 備份的伺服器,但其中一台出現問題,並且該硬碟未列為 /dev 中的設備,即使它出現在 lsusb 中。

輸出lsusb

root@server-name [/sys/bus/usb/devices]# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
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 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 005: ID 0bc2:50a5 Seagate RSS LLC FreeAgent GoFlex Desk USB 3.0
Bus 001 Device 003: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640 USB-2.0 "TetraHub"

輸出ls -lh /dev | grep sd

root@server-name [/sys/bus/usb/devices]# ls -lh /dev | grep sd
crw-rw----   1 root tty       2,  61 Mar  6 10:58 ptysd
brw-rw----   1 root disk      8,   0 Mar  6 10:58 sda
brw-rw----   1 root disk      8,   1 Mar  6 11:00 sda1
brw-rw----   1 root disk      8,   2 Mar  6 10:58 sda2
crw-rw----   1 root tty       3,  61 Mar  6 10:58 ttysd

我曾嘗試通過流行的 usbreset.c 腳本重新啟動 USB 埠,手動將電源級別設置為掛起/自動,將授權設置為 0(並返回 1)等。但是,這些似乎都沒有任何作用它認出了。

輸出dmesg

[2439599.103034] usb 1-3: reset high speed USB device number 4 using ehci_hcd
[2440600.692207] usb 1-3: new high speed USB device number 4 using ehci_hcd
[2440600.858527] usb 1-3: device firmware changed
[2440600.858547] usb 1-3: USB disconnect, device number 4
[2440600.961020] usb 1-3: new high speed USB device number 5 using ehci_hcd
[2440601.128405] usb 1-3: New USB device found, idVendor=0bc2, idProduct=50a5
[2440601.128410] usb 1-3: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[2440601.128414] usb 1-3: Product: GoFlex Desk
[2440601.128416] usb 1-3: Manufacturer: Seagate
[2440601.128417] usb 1-3: SerialNumber: NA0M0LAZ
[2440601.128510] usb 1-3: configuration #1 chosen from 1 choice
[2440601.128844] scsi5 : SCSI emulation for USB Mass Storage devices
[2440601.129201] usb-storage: device found at 5
[2440601.129203] usb-storage: waiting for device to settle before scanning
[2440602.129185] usb-storage: device scan complete
[2440622.803210] usb 1-3: reset high speed USB device number 5 using ehci_hcd
[2440643.797143] usb 1-3: reset high speed USB device number 5 using ehci_hcd
[2440664.797199] usb 1-3: reset high speed USB device number 5 using ehci_hcd
[2440685.797139] usb 1-3: reset high speed USB device number 5 using ehci_hcd

最後, 的輸出lsblk,以防萬一:

root@server-name [~/usbreset]# lsblk
NAME                        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0                         7:0    0   500M  0 loop /tmp
sda                           8:0    0 135.5G  0 disk 
├─sda1                        8:1    0   500M  0 part /boot
└─sda2                        8:2    0   135G  0 part 
 ├─vg_angel-lv_root (dm-0) 253:0    0    50G  0 lvm  /
 ├─vg_angel-lv_swap (dm-1) 253:1    0   7.9G  0 lvm  [SWAP]
 └─vg_angel-lv_home (dm-2) 253:2    0  77.2G  0 lvm  /home
sr0                          11:0    1  1024M  0 rom 

輸出cat /proc/scsi/scsi

root@server-name [~/usbreset]# cat /proc/scsi/scsi 
Attached devices:
Host: scsi0 Channel: 00 Id: 32 Lun: 00
 Vendor: DP       Model: BACKPLANE        Rev: 1.05
 Type:   Enclosure                        ANSI  SCSI revision: 05
Host: scsi0 Channel: 02 Id: 00 Lun: 00
 Vendor: DELL     Model: PERC 6/i         Rev: 1.11
 Type:   Direct-Access                    ANSI  SCSI revision: 05
Host: scsi1 Channel: 00 Id: 00 Lun: 00
 Vendor: HL-DT-ST Model: CD-ROM GCR-8240N Rev: 1.10
 Type:   CD-ROM                           ANSI  SCSI revision: 05

的輸出cat /proc/usb-storage/5

root@server-name [~/usbreset]# cat /proc/scsi/usb-storage/5 
  Host scsi5: usb-storage
      Vendor: Seagate
     Product: GoFlex Desk
Serial Number: NA0M0LAZ
    Protocol: Transparent SCSI
   Transport: Bulk
      Quirks:

如果您在所有具有相同驅動程序的伺服器上使用相同型號的磁碟和相同型號的主機板(或 USB 卡),並且如果所有驅動程序都可以正常工作,那麼問題很可能是硬體問題。

我要嘗試更換的第一件硬體是電纜,因為這是最容易更換的部分。如果這沒有幫助,我會在兩台伺服器之間交換兩個磁碟,以查看問題是跟隨磁碟還是停留在同一台伺服器上。

我猜你已經停止了udev。另請參閱我對您的問題的評論。

引用自:https://serverfault.com/questions/586765