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Re: [Qemu-devel] [PATCH for-2.6] vpc: fix return value check for blk_pwr

From: Kevin Wolf
Subject: Re: [Qemu-devel] [PATCH for-2.6] vpc: fix return value check for blk_pwrite
Date: Fri, 8 Apr 2016 13:55:07 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

Am 07.04.2016 um 16:52 hat Paolo Bonzini geschrieben:
> bdrv_pwrite_sync used to return zero or negative error, while blk_pwrite 
> returns
> the number of written bytes when successful.  This caused VPC image creation
> to fail spectacularly: it wrote the first 512 bytes, and then exited 
> immediately
> because of the non-zero answer from blk_pwrite.  But the truly spectacular 
> part
> is that it returns a positive value (the 512 that blk_pwrite returned) causing
> everyone to believe that it succeeded.
> This fixes qemu-iotests with vpc format.
> Fixes: b8f45cdf7827e39f9a1e6cc446f5972cc6144237
> Signed-off-by: Paolo Bonzini <address@hidden>

Thanks, applied to the block branch.


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