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From: Gerd Hoffmann <kraxel@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: qemu-devel@nongnu.org, Christoph Hellwig <hch@lst.de>,
	Markus Armbruster <armbru@redhat.com>
Subject: Re: [Qemu-devel] Re: [PATCH 08/12] block: Catch attempt to attach multiple devices to a blockdev
Date: Tue, 29 Jun 2010 10:06:43 +0200	[thread overview]
Message-ID: <4C29A993.4030708@redhat.com> (raw)
In-Reply-To: <4C285C51.9020003@redhat.com>

   Hi,

>> Note that currently the usb storage emulation is extremly broken anyway,
>> just writing to it produces I/O errors after a short while.  This means
>> it can't be used very much at all.
>
> When I tried last time, it did produce lots of kernel error messages in
> the guest, but in the end the data was written correctly. So it doesn't
> seem to be completely unusable.

I think it is actually the linux kernel being at fault here.  I've seen 
I/O errors on real hardware too, on my pretty old laptop which has usb 
1.1 only.  Probably something like timeouts being *way* too low for usb 
1.1 xfer speeds.

cheers,
   Gerd

  parent reply	other threads:[~2010-06-29  8:07 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-25 16:53 [Qemu-devel] [PATCH 00/12] More block-related fixes and cleanups Markus Armbruster
2010-06-25 16:53 ` [Qemu-devel] [PATCH 01/12] scsi: scsi_bus_legacy_handle_cmdline() can fail, fix callers Markus Armbruster
2010-06-25 19:39   ` [Qemu-devel] " Christoph Hellwig
2010-06-25 16:53 ` [Qemu-devel] [PATCH 02/12] ide: Make it explicit that ide_create_drive() can't fail Markus Armbruster
2010-06-25 19:40   ` [Qemu-devel] " Christoph Hellwig
2010-06-25 16:53 ` [Qemu-devel] [PATCH 03/12] blockdev: Remove drive_get_serial() Markus Armbruster
2010-06-25 19:41   ` [Qemu-devel] " Christoph Hellwig
2010-06-25 16:53 ` [Qemu-devel] [PATCH 04/12] blockdev: New drive_of_blockdev() Markus Armbruster
2010-06-25 19:42   ` [Qemu-devel] " Christoph Hellwig
2010-06-26  5:32     ` Markus Armbruster
2010-06-26  9:46       ` Christoph Hellwig
2010-06-26 14:46         ` Markus Armbruster
2010-06-27  9:36           ` Christoph Hellwig
2010-06-28  9:58           ` Paolo Bonzini
2010-06-29  8:57             ` Markus Armbruster
2010-06-25 16:53 ` [Qemu-devel] [PATCH 05/12] blockdev: Clean up automatic drive deletion Markus Armbruster
2010-06-26  9:48   ` [Qemu-devel] " Christoph Hellwig
2010-06-25 16:53 ` [Qemu-devel] [PATCH 06/12] qdev: Decouple qdev_prop_drive from DriveInfo Markus Armbruster
2010-06-26 10:09   ` [Qemu-devel] " Christoph Hellwig
2010-06-25 16:53 ` [Qemu-devel] [PATCH 07/12] blockdev: drive_get_by_id() is no longer used, remove Markus Armbruster
2010-06-26 10:09   ` [Qemu-devel] " Christoph Hellwig
2010-06-25 16:53 ` [Qemu-devel] [PATCH 08/12] block: Catch attempt to attach multiple devices to a blockdev Markus Armbruster
2010-06-26 10:11   ` [Qemu-devel] " Christoph Hellwig
2010-06-26 14:44     ` Markus Armbruster
2010-06-27  9:36       ` Christoph Hellwig
2010-06-28  8:24         ` Kevin Wolf
2010-06-28 10:16           ` Christoph Hellwig
2010-06-28 10:26             ` Kevin Wolf
2010-06-30 11:52               ` Markus Armbruster
2010-06-30 12:13                 ` Kevin Wolf
2010-06-29  8:06           ` Gerd Hoffmann [this message]
2010-06-30 11:33         ` Markus Armbruster
2010-06-29 13:32   ` Kevin Wolf
2010-06-29 14:29     ` Markus Armbruster
2010-06-29 14:58   ` [Qemu-devel] [PATCH v2 " Markus Armbruster
2010-06-25 16:53 ` [Qemu-devel] [PATCH 09/12] savevm: Survive hot-unplug of snapshot device Markus Armbruster
2010-06-26 10:12   ` [Qemu-devel] " Christoph Hellwig
2010-06-30 11:28     ` Markus Armbruster
2010-06-30 13:37   ` Kevin Wolf
2010-06-30 16:34     ` Markus Armbruster
2010-06-25 16:53 ` [Qemu-devel] [PATCH 10/12] block: Fix virtual media change for if=none Markus Armbruster
2010-06-26 10:14   ` [Qemu-devel] " Christoph Hellwig
2010-06-25 16:53 ` [Qemu-devel] [PATCH 11/12] ide: Make PIIX and ISA IDE init functions return the qdev Markus Armbruster
2010-06-26 10:14   ` [Qemu-devel] " Christoph Hellwig
2010-06-25 16:53 ` [Qemu-devel] [PATCH 12/12] pc: Fix CMOS info for drives defined with -device Markus Armbruster

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