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2 Commits

Author SHA1 Message Date
Colin Walters 79fc506284 tests: Avoid generating lots of output in itest-payload-link
We noticed this in a recent PR.  While I'm here, also only do
the `find` once, add `-type l` for good measure, and use our
built in `libtest.sh` assertion functions.

Closes: #1494
Approved by: giuseppe
2018-03-13 13:05:27 +00:00
Giuseppe Scrivano 127d8bb846 commit: add logic for .payload-link
When a new object is added to the repository, create a
$PAYLOAD-SHA256.payload-link symlink file as well.  The target of the
symlink is the checksum of the object that was added the repository.

Whenever we add a new object file, in addition to lookup if the file is
already present with the same checksum we also check if an object with
the same payload is in the repository.

If a file with the same payload is already present in the repository, we
copy it with `glnx_regfile_copy_bytes` that internally attempts to
create a reflink (ioctl (..., FICLONE, ..)) to the target file if the
file system supports it.  This enables to have objects that share the
payload but have a different inode and xattrs.

By default the payload-link-threshold value is G_MAXUINT64 that disables
the feature.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

Closes: #1443
Approved by: cgwalters
2018-03-07 18:28:59 +00:00