lkml.org 
[lkml]   [2023]   [Apr]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH V3] erofs: support flattened block device for multi-blob images
From
On 2023/3/2 15:17, Jia Zhu wrote:
> In order to support mounting multi-blobs container image as a single
> block device, add flattened block device feature for EROFS.
>
> In this mode, all meta/data contents will be mapped into one block
> address. User could compose a block device(by nbd/ublk/virtio-blk/
> vhost-user-blk) from multiple sources and mount the block device by
> EROFS directly. It can reduce the number of block devices used, and
> it's also benefits in both VM file passthrough and distributed storage
> scenarios.
>
> You can test this using the method mentioned by:
> https://github.com/dragonflyoss/image-service/pull/1111
> 1. Compose a (nbd)block device from multi-blobs.
> 2. Mount EROFS on mntdir/.
> 3. Compare the md5sum between source dir and mntdir/.
>
> Later, we could also use it to refer original tar blobs.
>
> Signed-off-by: Jia Zhu <zhujia.zj@bytedance.com>
> Signed-off-by: Xin Yin <yinxin.x@bytedance.com>
> Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com>

Acked-by: Chao Yu <chao@kernel.org>

Thanks,

\
 
 \ /
  Last update: 2023-04-16 16:31    [W:0.057 / U:0.336 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site