sets the default repository to use, e.g. like:
export BORG_REPO=/mnt/backup/repo
borg init
borg create ::archive
borg list
borg mount :: /mnt
fusermount -u /mnt
borg delete ::archive
added a check that compares the size of the new chunk with the stored size of the
already existing chunk in storage that has the same id_hash value.
raise an exception if there is a size mismatch.
this could happen if:
- the stored size is somehow incorrect (corruption or software bug)
- we found a hash collision for the id_hash (for sha256, this is very unlikely)
outdated - it just showed different levels of zlib compression,
but not we additionally have "lzma", "lz4" and "none" compression.
the "usage" and "internals" docs give some hints about them, too.
This fixes a infrequent problem when (refcount * chunksize) overflowed a int32_t.
chunksize is always <= 8MiB and usually rather ~64KiB (with default chunker params).
Thus, this happened only for high refcounts and/or unusually big chunks.
e.g.:
- setting any security.* key is expected to fail with EACCES if one is not root.
- issue #162 on our issue tracker: user was root, but due to some specific scenario
involving docker and selinux, setting security.selinux key fails even when running as root
not sure if it is the best solution to silently ignore this, but some lines below this change
failure to do a chown is also silently ignored (happens e.g. when restoring a file not owned
by the current user as a non-root user).
if we use {} as default for item.get(), we do not need the "if" as iteration over an empty dict won't do anything.
also fixes too deep indentation the original code had.
the parser for the --chunker-params argument had a wrong parameter order.
fixed the order so it conforms to the help text and the docs.
also added some tests for it and a text for the ValueError exception.
currently, we only use sha256 hashes as key, so key length is always 32.
but instead of hardcoding 32 everywhere, using key_length is just better
readable and also more flexible for the future.
borg list --short just spills out the list of files / dirs - better for some tests
and also useful on the commandline for interactive use.
the tests previously needed fakeroot because in the test setup it always
made calls to mknod and chown, which require (fake)root.
now, the tests adapt to whether it detects (fake)root or not - to run the
the tests completely, you still need fakeroot, but it won't fail all the archiver
tests just due to failing test setup.
also, a test not working correctly due to fakeroot was found:
it should detect whether a read-only repo is usable, but it failed to do that
because with (fake)root, there is no "read only" (at least not via taking away
the w permission bits).
environment context manager: if a env var was not present before, it should not be present afterwards
teardown: cd out of the tmpdir before deleting it
