Re: [Qemu-block] [PATCH v5 0/3] qemu-img: rebase: Improve/optimize rebase operation

[Max Reitz]

On 23.05.19 18:33, Sam Eiderman wrote:
> This patch series aims to improve the speed of qemu-img rebase.
> 
>   1. Mainly by removing unnecessary reads when rebasing on the same
>      chain.
>   2. But also by minimizing the number of bdrv_open calls rebase
>      requires.
> 
> v2:
> 
> * Added missing g_free in
>   "qemu-img: rebase: Reuse in-chain BlockDriverState"
> 
> v3:
> 
> * Rebased on top of "Allow rebase with no input base" series
> 
> v4 & v5:
> 
> * Using backing_bs(bs) when a prefix was detected since bs was
>   already checked for allocation.
> 
> Sam Eiderman (3):
>   qemu-img: rebase: Reuse parent BlockDriverState
>   qemu-img: rebase: Reduce reads on in-chain rebase
>   qemu-img: rebase: Reuse in-chain BlockDriverState
> 
>  qemu-img.c | 85 
> ++++++++++++++++++++++++++++++++++++++++----------------------
>  1 file changed, 55 insertions(+), 30 deletions(-)

Thanks, applied to my block branch:

https://git.xanclic.moe/XanClic/qemu/commits/branch/block

Max

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