Add erofs-util API support for overlaybd #332
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relates to containerd/accelerated-container-image#287 |
hsiangkao
reviewed
Jun 25, 2024
src/overlaybd/tar/erofs/liberofs.cpp
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| erofs_inode_manager_init(); | ||
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| root = erofs_mkfs_alloc_root(sbi); |
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let's rename this as erofs_rebuild_make_root(sbi);
src/overlaybd/tar/erofs/liberofs.cpp
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| #define EROFS_UNIMPLEMENTED 1 | ||
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| struct erofs_sector { |
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I think we could just use a std::map<addr, struct liberofs_inmem_sector> and stl::set for dirty bitmap?
struct liberofs_inmem_sector {
char data[SECTOR_SIZE];
};
hsiangkao
reviewed
Jun 25, 2024
src/overlaybd/tar/erofs/liberofs.h
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| public: | ||
| LibErofs(photon::fs::IFile *target); | ||
| ~LibErofs(); | ||
| int extract_tar(photon::fs::IFile *source, uint64_t blksize, bool meta_only, bool first_layer); |
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uint64_t blksize should be moved to the constructor.
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Previously, erofs-utils was integrated into overlaybd by using the `mkfs.erofs` executable file. It's not optimial since raw data needs to be dumped first and output data needs to be write into overlaybd then. This commit introduces the I/O API in tarerofs, that the data stream of the: - output image - input tar file can be controlled by the I/O manager. This also adds block read/write cache support for IFile to improve the efficiency of making file system images. Signed-off-by: Hongzhen Luo <hongzhen@linux.alibaba.com>
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hsiangkao
approved these changes
Jun 27, 2024
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LGTM |
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will build a new release after improving CI test |
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What this PR does / why we need it:
Previously, erofs-utils was integrated into overlaybd by using the mkfs.erofs executable file. It's not optimial since raw data needs to be dumped first and output data needs to be write into overlaybd then.
This adds EROFS API support for overlaybd.
Which issue(s) this PR fixes (optional, in
fixes #<issue number>(, fixes #<issue_number>, ...)format, will close the issue(s) when PR gets merged):Fixes #
Please check the following list: