Mailinglist Archive: opensuse (3531 mails)

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Re: [opensuse] Copying *to* USB disk is slower than copying *from*
  • From: Reinhard Gimbel <opensuse@xxxxxxxxxxxxx>
  • Date: Fri, 5 Jan 2007 16:21:57 +0100 (MET)
  • Message-id: <459E6D20.6050308@xxxxxxxxxxxxx>
Hello community, hello Svend

Svend Tollak Munkejord wrote/schrieb:

> On 2007-01-05, <jdd@xxxxxxxxx> wrote:
>> in kde, right click on the device and look for a tab with options,
>> some are faster (but less secure, don't remove the usb device too fast)
> Thanks for the tip. Using Konqueror, I unchecked the options
> "Synchronous" and "Acces time updates". That helped; now the copy-to
> speed is as fast as the copy-from speed.
> What do these options actually do? Are they not safe to use as long as
> I use the "safely remove" function before unplugging the USB disk?

Look for the description of the options "async"/"sync" and
"noatime"/"atime" while issueing "man mount"

A coarse explanation: With the "sync"-option each block is forced to be
written to the drive as soon as possible. This takes some time. With
"async" the buffer gets written in larger chunks. A problem could be if
one disconnects the drive to early. In this case the file system could
be corrupted because not all data are written to the drive.
Never give up !

Best regards / Gruß, Reinhard.

"Software is like a parachute. It doesn't work if it is not open."
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