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Export Nydus images as block devices by using NBD #1139

Merged
merged 7 commits into from
Mar 7, 2023
Merged

Export Nydus images as block devices by using NBD #1139

merged 7 commits into from
Mar 7, 2023

Commits on Mar 4, 2023

  1. rafs: refine v6 related code 

    Refine v6 related code and add two fields to meta info.

Signed-off-by: Jiang Liu <gerry@linux.alibaba.com>
    @jiangliu
    jiangliu committed Mar 4, 2023
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  2. rafs: load mapped-blkaddr for each data blob 

    Load the mapped_blkaddr field for each data blob, later it will
be used compose a RAFS v6 image into a block device.

Signed-off-by: Jiang Liu <gerry@linux.alibaba.com>
    @jiangliu
    jiangliu committed Mar 4, 2023
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  3. service: add common code to compose a block device from a RAFSv6 image 

    Add common code to compose a block device from a RAFS image,
which then can used exposed through nbd/ublk/virtio-blk/vhost-user-blk
etc.

Signed-off-by: Jiang Liu <gerry@linux.alibaba.com>
    @jiangliu
    jiangliu committed Mar 4, 2023
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  4. service: compose a block device from a RAFSv6 image 

    Compose a block device from a RAFSv6 image, so all metadata/data
content can be accessed by block address. The EROFS fs driver can be
used to directly mount the block device.

It depends on the blob_cache subsystem and can be used to implement
nbd/ublk/virtio-blk/vhost-user-blk servers.

Signed-off-by: Jiang Liu <gerry@linux.alibaba.com>
    @jiangliu
    jiangliu committed Mar 4, 2023
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  5. service: add nbd service to export RAFSv6 images as block devices 

    Implement NbdService which cooperates with the Linux nbd driver to
expose RAFSv6 images as block devices. To simplify the implementation,
the NbdService will directly talk with the nbd driver, instead of
following a typical nbd-server and nbd-client architecture.

Signed-off-by: Jiang Liu <gerry@linux.alibaba.com>
    @jiangliu
    jiangliu committed Mar 4, 2023
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  6. nydusd: add subcommand nbd to export nydus images as block devices 

    Add subcommand nbd to export nydus images as block devices through
NBD.

Signed-off-by: Jiang Liu <gerry@linux.alibaba.com>
    @jiangliu
    jiangliu committed Mar 4, 2023
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  7. api: add method to load BlobCacheConfigV2 from file 

    Add method to load BlobCacheConfigV2 from configuration file.

Signed-off-by: Jiang Liu <gerry@linux.alibaba.com>
    @jiangliu
    jiangliu committed Mar 4, 2023
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