2003-06-22 06:58:17

by Harald Dunkel

[permalink] [raw]
Subject: 2.4.21: USB Mass Storage data integrity not assured?

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


2003-06-22 08:05:46

by Matthew Dharm

[permalink] [raw]
Subject: Re: 2.4.21: USB Mass Storage data integrity not assured?

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: [email protected]
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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2003-06-22 08:57:20

by Harald Dunkel

[permalink] [raw]
Subject: Re: 2.4.21: USB Mass Storage data integrity not assured?

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

2003-06-22 09:00:33

by Eyal Lebedinsky

[permalink] [raw]
Subject: Re: 2.4.21: USB Mass Storage data integrity not assured?

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 ([email protected]) <http://samba.org/eyal/>