All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jonathan Tripathy <jonnyt@abpni.co.uk>
To: "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>,
	James Harper <james.harper@bendigoit.com.au>
Subject: Re: Xen and 4K Sectors (was blkback and bcache)
Date: Tue, 28 Aug 2012 22:21:10 +0100	[thread overview]
Message-ID: <503D3646.7020800@abpni.co.uk> (raw)


[-- Attachment #1.1: Type: text/plain, Size: 971 bytes --]

On Mon, Aug 13, 2012 at 01:25:07PM +0000, James Harper wrote:
>/  >/
>/  > I think the problem is definitely related to the 4K sector issue./
>/  >/
>/  > qemu appears to always present 512 byte sectors, thus only booting from a/
>/  > 512 byte sector partition table. Once the PV drivers take over though it all/
>/  > falls down because PV drivers are passed a 4K sector size and nothing/
>/  > matches up anymore./
>/  >

/Hi James,

I'm curious as to how you came to the conclusion that qemu always presents 512 byte sectors?
When using bcache formatted to a 4k sector size, Windows Server 2008 just flat out refuses to install...
This is true regardless of whether I'm passing an LV directly to the DomU (phy), or whether I'm using tap::aio or file.

When formatting the bcache to 512 byte size, Windows tries to install. I say "tries" as then my system kernel
panics and reboots, but that's a bcache issue (I've posted the trace to the bcache list).

Thanks

//




[-- Attachment #1.2: Type: text/html, Size: 1607 bytes --]

[-- Attachment #2: Type: text/plain, Size: 126 bytes --]

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

             reply	other threads:[~2012-08-28 21:21 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-28 21:21 Jonathan Tripathy [this message]
2012-08-29  7:00 ` Xen and 4K Sectors (was blkback and bcache) James Harper
2012-08-29  7:28 ` Killian De Volder
  -- strict thread matches above, loose matches on Subject: below --
2012-08-13 13:16 James Harper
2012-08-13 13:25 ` James Harper
2012-08-13 18:43   ` Pasi Kärkkäinen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=503D3646.7020800@abpni.co.uk \
    --to=jonnyt@abpni.co.uk \
    --cc=james.harper@bendigoit.com.au \
    --cc=xen-devel@lists.xen.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.