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Old 02-26-2008, 06:45 AM   #1
MonctonJohn
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USB Mass storage MP3 player has songs cut in half using Konqueror to transfer


I noticed this morning that after transfering songs to my player that the last 10 or so songs on plays about half way before skipping to the next songs. I mounted the usb drive using the CLI and tranfered with the standard cp command. I used konqueror to check the size of the directory on the player so I didn't go over (its only a 1 GB). I closed konq and went back to CLI and tried umount. It kept saying the the device was busy. I did umount -l and it umount immediately, but the last 10ish songs are chopped off. Normally if I just use the CLI to mount transfer and umount it never says that the device is busy and all the songs are fine. Whats konqueror doing to make this kind of thing happen?
 
Old 02-26-2008, 07:00 AM   #2
Simon Bridge
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Hmmm... why do you think konqueror has anything to do with this?
Anyway, it looks like the last few files were not completely transferred when you forced the umount. When a device says it's busy, sometimes it is. When you force a disconnection, you can expect data corruption.
 
Old 02-26-2008, 07:27 AM   #3
MonctonJohn
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Quote:
why do you think konqueror has anything to do with this?
I used konqueror to transfer files to my gf's player without the CLI. I mounted, transfered then umounted all from within konqueror and the same thing happened only alot more files were corrupt. Using konq to umount the device never complained. The option said "Safely remove". Not sure if konqueror is the culprit, but I will try again with CLI only to see if there is any difference. Also what is the command to get the size of all the files and sub-directories within a directory?
 
Old 02-26-2008, 10:43 AM   #4
Simon Bridge
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Quote:
I used konqueror to transfer files to my gf's player without the CLI.
OK, but before you said:
Quote:
I mounted the usb drive using the CLI and tranfered with the standard cp command.
... and that you only used konqueror
Quote:
to check the size of the directory on the player
.

Quote:
what is the command to get the size of all the files and sub-directories within a directory?
df
 
Old 02-26-2008, 11:09 AM   #5
MonctonJohn
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Oops... I was rushing.

Quote:
I used konqueror to transfer files to my gf's player without the CLI.
This was a month ago.

Quote:
I mounted the usb drive using the CLI and tranfered with the standard cp command.
This was last night.

I'll try again tonight with CLI only and see what happens.

Thanks for the help.
 
Old 02-27-2008, 05:29 PM   #6
wabbalee
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i have had the same problem with my mp3 player. what worked for me was to format the player (fat32). another thing i would like to point out is when you unmount your drive, you must wait until the light on it stops blinking, even if your icon looks as if it were unmounted. in my case the icon must not only look is if it is unmounted but disappears when transfer is complete. sometimes (when copying large lots) the copying progress bar has gone from the screen but the usb device' light is still blinking, indicating it is still doing something.

regards
ron
 
Old 02-27-2008, 06:04 PM   #7
pusrob
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I agree with what wabbalee said. You must wait until the light completely turns off on your player. When konq sais that the copy procedure is complete (copy indication window disappears), its very common that the procedure is not complete in reality. It can be because of data caching. The copy window disappears because all data has been cached, but in the same time cached data is not completely written to the device. And this is not shown anywhere.
So again: always wait until the light turns off on your player.
 
Old 02-27-2008, 07:27 PM   #8
MonctonJohn
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Ah I see. Thanks for the advice. Now that I think back it does look like the transfer takes only a few seconds for 1 GB worth of data. Even for USB 2.0 thats way too fast. So the transfer window is only reporting the write to the cache.

Thanks everyone
Köszönöm pusrob
 
Old 02-28-2008, 01:53 PM   #9
pusrob
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Quote:
Originally Posted by MonctonJohn View Post
So the transfer window is only reporting the write to the cache.
Well, yes. This is my theory about the problem. For non-USB devices I think the copy indicator shows the right procedure percentages.
Quote:
Originally Posted by MonctonJohn View Post
Thanks everyone
Köszönöm pusrob
You're welcome!
Did you learn hungarian?
 
Old 02-28-2008, 03:19 PM   #10
MonctonJohn
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My parents were originally from Hungary so that makes me Hungarian but I only have Canadian citezenship.
 
Old 02-28-2008, 04:51 PM   #11
pusrob
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I see. So you speak hungarian and english fluently. Do you come to Hungary sometimes?
 
Old 02-29-2008, 06:29 AM   #12
MonctonJohn
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The last time I was there was in 1995. I would love to go again. I may do that some day
 
  


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