Re: Delay in unmounting a USB pen drive

[bert hubert]

On Wed, Nov 24, 2004 at 02:55:57PM +0530, Raj wrote:
> SuSE kernel 2.6.5:
> 
> My USB pen drive has a vfat FS. When i transfer some files & try to
> unmount the drive ( umount /mnt ) , the command appears hung. CTRL+C also
> does not work. Only later did i realise that it was actually taking a
> longer time ( 10 - 15 sec )
> to unmount.

The data is only actually being written to the pen drive when you unmount.
To make unmounting fast, either mount with -o sync, or run 'sync' before
umounting.


> - Is it safe to remove the pen drive from it's slot when the umount is still in
>   progress ?? ( I tried this the first time & maybe lucky me, the
> files copied were fine )

Try reading them - you will find emtpiness.

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