u盘一直处于只读状态

Question

1.U盘查到服务器ubutu12.04上一直处于只读状态，查了一些资料，可以先卸载在挂载可以解决这个问题。

2.但是这个问题出现以后有出现了，再次找相应的解决方法：

 查到可以使用dosfsck -v -a U盘所在位置

3.但是修复过程很慢。回显内容为：
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 825045808 bytes, date 14:17:14 Sep 16 2004
Auto-renaming second.
Renamed to FSCK0003.352
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 808269105 bytes, date 14:01:32 Sep 12 1999
Auto-renaming second.
Renamed to FSCK0003.353
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 808269105 bytes, date 14:01:32 Sep 12 1999
Auto-renaming second.
Renamed to FSCK0003.354
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 540619053 bytes, date 14:09:32 Sep 21 2002
Auto-renaming second.
Renamed to FSCK0003.355
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 825240885 bytes, date 14:01:36 Sep 17 2006
Auto-renaming second.
Renamed to FSCK0003.356
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 758460720 bytes, date 14:01:28 Jan 16 2002
Auto-renaming second.
Renamed to FSCK0003.357
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 808269105 bytes, date 14:01:32 Sep 12 1999
Auto-renaming second.
Renamed to FSCK0003.358
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 909126966 bytes, date 14:01:36 Sep 17 2006
Auto-renaming second.
Renamed to FSCK0003.359
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 758460720 bytes, date 14:25:28 Jan 24 2002
Auto-renaming second.
Renamed to FSCK0003.360
/3710/:9aG:9bk:7kX:7G6:7px:7xV/:586:9Os:6kr/:59D:6SV:9S0:6n2:586:6UG:8r4:6MP/:6Mv:6X8:8k+:8kX:8-7:7eB:6M7:4xs/ui/:5L6:68t:7Ru:55p/resources/images/.svn/tmp/text-base/00,0.00,.0.0
Duplicate directory entry.
First Size 892416050 bytes, date 13:49:50 Jan 16 2004
Second Size 808269105 bytes, date 14:01:32 Sep 12 1999
Auto-renaming second.
该修复已经进行了一个下午了，还没有完。这是怎么回事。我的U盘是32G的，大约使用了7G左右。现在出现这种情况是修复过程没有完还是出现什么问题哦。

还有一件事就是它这个修复是怎么修复的呢？能讲讲其中的原理吗!这个修复过程时间消耗和U盘大小有关还是和是用的大小有关是吗！！！