2.4.21: USB Mass Storage data integrity not assured?

2.4.21: USB Mass Storage data integrity not assured?

[Harald Dunkel]

Hi folks,

This morning I tried to attach an 2.5" HD via USB2.0 to my Linux box.
I got a message

	WARNING: USB Mass Storage data integrity not assured

in kern.log, followed by billions of IO errors during mkfs.


Well, I need a mass storage whose integrity _is_ assured. Is there
any hope that ehci and usb-storage get improved for a 2.4.x kernel?
Any patches I could try?


Regards

Harri

Re: 2.4.21: USB Mass Storage data integrity not assured?

[Matthew Dharm]

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That warning means that if you yank the device at a bad time, you could get
screwed.

Matt

On Sun, Jun 22, 2003 at 09:12:16AM +0200, Harald Dunkel wrote:
> Hi folks,
> 
> This morning I tried to attach an 2.5" HD via USB2.0 to my Linux box.
> I got a message
> 
> 	WARNING: USB Mass Storage data integrity not assured
> 
> in kern.log, followed by billions of IO errors during mkfs.
> 
> 
> Well, I need a mass storage whose integrity _is_ assured. Is there
> any hope that ehci and usb-storage get improved for a 2.4.x kernel?
> Any patches I could try?
> 
> 
> Regards
> 
> Harri
> 
> -
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-- 
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

Stef, you just got beaten by a ball of DIRT.
					-- Greg
User Friendly, 12/7/1997

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Re: 2.4.21: USB Mass Storage data integrity not assured?

[Harald Dunkel]

Harald Dunkel wrote:
> 
> Well, I need a mass storage whose integrity _is_ assured. Is there
> any hope that ehci and usb-storage get improved for a 2.4.x kernel?
> Any patches I could try?
> 

I found Greg's patches. Much better now.


Regards

Harri

Re: 2.4.21: USB Mass Storage data integrity not assured?

[Eyal Lebedinsky]

And IDE will be assured under similar actions? And SCSI?
And any removable media yanked without unmounting?

Either the message is useless or there is a real higer
risk with USB that with other buses - and I would like to
know what it is too.

Matthew Dharm wrote:
> 
> That warning means that if you yank the device at a bad time, you could get
> screwed.
> 
> Matt
> 
> On Sun, Jun 22, 2003 at 09:12:16AM +0200, Harald Dunkel wrote:
> > Hi folks,
> >
> > This morning I tried to attach an 2.5" HD via USB2.0 to my Linux box.
> > I got a message
> >
> >       WARNING: USB Mass Storage data integrity not assured
> >
> > in kern.log, followed by billions of IO errors during mkfs.
> >
> >
> > Well, I need a mass storage whose integrity _is_ assured. Is there
> > any hope that ehci and usb-storage get improved for a 2.4.x kernel?
> > Any patches I could try?

--
Eyal Lebedinsky (eyal@eyal.emu.id.au) <http://samba.org/eyal/>