解决XBian下挂载分区移动硬盘的分区乱序问题

mosesgi

坛子里用XBian的不少，XBian使用usbmount自动挂载USB存储设备。
但这带来一个问题：如果挂了分区的移动硬盘的话，每次启动后移动硬盘的分区挂载顺序是乱的。
比如上次移动硬盘的第一分区挂到/media/usb0，下次就挂到/media/usb3去了。

下面是解决办法，使挂载目录固定。请按步骤执行。

1. 建立文件：/etc/usbmount/mount.d/00_a_ensure_mount_order
2. 编辑文件加入代码：

1. #!/bin/bash
   
2. # Script name: /etc/usbmount/mount.d/00_a_ensure_mount_order
   
3. # Beta script: not tested
   
4. # This script will ensure mount order of harddisk
   
5. # This script will not be effective in changing the boot order
   
6. 
   
7. set -e
   
8. LOGFILE="/root/usbmount.log"
   
9. 
   
10. # Enlist the partitions and its desired mount path
    
11. DEVICE[0]=/dev/sda1
    
12. MOUNTPOINT[0]="/media/usb0"
    
13. DEVICE[1]=/dev/sda5
    
14. MOUNTPOINT[1]="/media/usb1"
    
15. DEVICE[2]=/dev/sda6
    
16. MOUNTPOINT[2]="/media/usb2"
    
17. DEVICE[3]=/dev/sda7
    
18. MOUNTPOINT[3]="/media/usb3"
    
19. log()
    
20. {
    
21.        echo "$1" >> $LOGFILE
    
22. }
    
23. 
    
24. start_script()
    
25. {
    
26.    log ">>>Detected device start: $UM_DEVICE>>>>>>>>"
    
27. }
    
28. exit_script()
    
29. {
    
30.    log "<<<Detected device end : $UM_DEVICE<<<<<<<<"
    
31.    exit
    
32. }
    
33. 
    
34. start_script
    
35. 
    
36. #Check if the devices and mount points match
    
37. if [[ ${#DEVICE[*]} -ne ${#MOUNTPOINT[*]} ]]; then
    
38.         log "Device and Mount mismatch"
    
39.         exit_script
    
40. fi
    
41. 
    
42. MTPOINT=
    
43. index=0
    
44. 
    
45. #Check if the mounted device is on the desired partitions list
    
46. for d in ${DEVICE[*]}
    
47. do
    
48.         if test "${DEVICE[index]}" = "$UM_DEVICE"; then
    
49.                 MTPOINT=${MOUNTPOINT[index]}
    
50.         fi
    
51.         let index=$index+1
    
52. done
    
53. 
    
54. if test ! -z $MTPOINT; then
    
55.         log "Match found for $UM_DEVICE"
    
56.         log "Matching mount point $MTPOINT"
    
57. else
    
58.         log "Device not found on the list..exiting."
    
59.         exit_script
    
60. fi
    
61. 
    
62. #Unmount the device
    
63. # Better logic can be added to check if the device is mounted
    
64. # at the correct desired location. Unmount only if not.
    
65. log "executing command: umount -l $UM_MOUNTPOINT"
    
66. umount -l "$UM_MOUNTPOINT"
    
67. 
    
68. #Mount the device at the right path
    
69. log "executing command: mount $UM_DEVICE $MTPOINT"
    
70. mount $UM_DEVICE $MTPOINT
    
71. 
    
72. #Finally set the mount path to UM_MOUNTPOINT
    
73. export UM_MOUNTPOINT="$MTPOINT"
    
74. 
    
75. exit_script
    

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3. 文件开头定义了四个分区及相应挂载位置，请大家修改以满足需要
查看分区信息：
sudo fdisk -l
例如我的：

1. Disk /dev/sda: 320.1 GB, 320072931328 bytes
   
2. 255 heads, 63 sectors/track, 38913 cylinders, total 625142444 sectors
   
3. Units = sectors of 1 * 512 = 512 bytes
   
4. Sector size (logical/physical): 512 bytes / 512 bytes
   
5. I/O size (minimum/optimal): 512 bytes / 512 bytes
   
6. Disk identifier: 0x76692ca8
   
7. 
   
8.    Device Boot      Start         End      Blocks   Id  System
   
9. /dev/sda1   *          63     4209029     2104483+   7  HPFS/NTFS/exFAT
   
10. /dev/sda2         4209030   625137344   310464157+   f  W95 Ext'd (LBA)
    
11. /dev/sda5         4209093    88116524    41953716    7  HPFS/NTFS/exFAT
    
12. /dev/sda6        88116588   457338419   184610916    7  HPFS/NTFS/exFAT
    
13. /dev/sda7       457338483   625137344    83899431    7  HPFS/NTFS/exFAT
    

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需要说明的是其中的/dev/sda2对应整个扩展分区（sda5, sda6, sda7)，所以不用挂它

4. 保存退出
5. 加可执行权限

1. chmod +x /etc/usbmount/mount.d/00_a_ensure_mount_order

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本人重启了几次测试是可用的。
原帖：http://www.tonido.com/forum/viewtopic.php?f=37&t=776

帮到忙的话还请顶一顶，希望可以帮到更多人。