UDEV的一些问题[为什么我的U盘的是uba1?,怎样控制自动加载选项？］

jackieupc

如题，今天尝试udev，但是出现了一个怪现象：

1. 
   
2. #tail /var/log/messages
   
3. Jun 18 00:47:25 soros kernel: usb 3-2: new full speed USB device using uhci_hcd and address 5
   
4. Jun 18 00:47:25 soros kernel: uba: device 5 capacity nsec 128000 bsize 512
   
5. Jun 18 00:47:25 soros kernel: uba: device 5 capacity nsec 128000 bsize 512
   
6. Jun 18 00:47:25 soros kernel:  /dev/ub/a: p1
   
7. Jun 18 00:47:26 soros fstab-sync[11896]: added mount point /media/JACKIE for /dev/uba1
   

复制代码

1. 
   
2. 
   
3. #fdisk /dev/uba1 -l
   
4. 
   
5. Disk /dev/uba1: 65 MB, 65486848 bytes
   
6. 255 heads, 63 sectors/track, 7 cylinders
   
7. Units = cylinders of 16065 * 512 = 8225280 bytes
   
8. 
   
9. This doesn't look like a partition table
   
10. Probably you selected the wrong device.
    
11. 
    
12.      Device Boot      Start         End      Blocks   Id  System
    
13. /dev/uba1p1   ?       48437      119493   570754815+  72  Unknown
    
14. Partition 1 has different physical/logical beginnings (non-Linux?):
    
15.      phys=(357, 116, 40) logical=(48436, 183, 40)
    
16. Partition 1 has different physical/logical endings:
    
17.      phys=(357, 32, 45) logical=(119492, 104, 7)
    
18. Partition 1 does not end on cylinder boundary.
    
19. /dev/uba1p2   ?       10501      131013   968014120   65  Novell Netware 386
    
20. Partition 2 has different physical/logical beginnings (non-Linux?):
    
21.      phys=(288, 115, 43) logical=(10500, 111, 30)
    
22. Partition 2 has different physical/logical endings:
    
23.      phys=(367, 114, 50) logical=(131012, 158, 28)
    
24. Partition 2 does not end on cylinder boundary.
    
25. /dev/uba1p3   ?      116395      236907   968014096   79  Unknown
    
26. Partition 3 has different physical/logical beginnings (non-Linux?):
    
27.      phys=(366, 32, 33) logical=(116394, 188, 12)
    
28. Partition 3 has different physical/logical endings:
    
29.      phys=(357, 32, 43) logical=(236906, 234, 25)
    
30. Partition 3 does not end on cylinder boundary.
    
31. /dev/uba1p4   ?      179626      179629       27749+   d  Unknown
    
32. Partition 4 has different physical/logical beginnings (non-Linux?):
    
33.      phys=(372, 97, 50) logical=(179625, 87, 47)
    
34. Partition 4 has different physical/logical endings:
    
35.      phys=(0, 10, 0) logical=(179628, 203, 42)
    
36. Partition 4 does not end on cylinder boundary.
    
37. 
    
38. Partition table entries are not in disk order
    

复制代码

系统在配置文件/etc/fstab的后面自动加了一行：

1. 
   
2. /dev/uba1               /media/JACKIE           vfat    user,exec,noauto,utf8,noatime,sync,managed 0 0
   

复制代码

执行：

1. 
   
2. #mount /media/JACKIE
   
3. mount: wrong fs type, bad option, bad superblock on /dev/uba1,
   
4.        missing codepage or other error
   
5.        In some cases useful info is found in syslog - try
   
6.        dmesg | tail  or so
   

复制代码

得自己手动改/etc/fstab才行。
我没有把sd_mod编成模块，而是直接编进内核。这有关系吗？
谢谢先了！

cnyg

因为你的内核把这个编译进去了.
Device Drivers  ---> Block devices  ---><M> Low Performance USB Block driver   
建议你不要使用,因为使用了这个后有些 U 盘的读写速度可能会不正常.

jackieupc

是这个问题。重新编译了内核就正常了。

jackieupc

另外一个问题：
系统在/etc/fstab的后面自动加了这么一行：

1. 
   
2. /dev/uba1               /media/JACKIE           vfat    user,exec,noauto,utf8,noatime,sync,managed 0 0
   

复制代码

请问怎样自己控制系统自动加载的选项呢？比如说我想使系统在侦测到我有n个U盘或者其他USB设备插入时，系统能把诸如

1. rw,users,gid=6,umask=007 ,iocharset=cp936,auto

复制代码

之类的语句加到/etc/fstab文件呢？又如如何控制挂载点呢？如何把加载点设置为/mnt/usb_devie-<其他能区分各个USB设备的信息，如厂商、serial No.等>呢？
能给些思路或者文档吗？谢谢了。