Re: [Xen-devel] blkback and bcache

[Joseph Glanville <joseph.glanville@xxxxxxxxxxxxxx>]

On 13 August 2012 17:16, James Harper <james.harper@xxxxxxxxxxxxxxxx> wrote:
> I'm having trouble using blkback under gplpv when the disk is on top of a 
> bcache device. My devices are layered as follows:
>
> /dev/sd[ab]
> md0 (RAID1)
> bcache
> lvm
>
> It seems that bcache presents a 4K sector size to Linux, which is then 
> reflected by lvm and in turn blkback.
>
> Obviously GPLPV isn't handling 4K sectors correctly... any suggestions as to 
> what I might need to do to make this work properly? As a last resort I should 
> be able to fake 512 byte sectors to Windows but would prefer that Windows 
> knew it was dealing with a device with 4K sectors underneath.
>
> Thanks
>
> James
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel

This could very well be the issue I was having, I haven't been able to
pull the latest bcache code for a few days (repo down?) but if I can
help debug let me know.

-- 
CTO | Orion Virtualisation Solutions | www.orionvm.com.au
Phone: 1300 56 99 52 | Mobile: 0428 754 846

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