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set MAX_DATA_SIZE = 20971479 bytes in solid stone

This commit is contained in:
Marian Beermann 2017-02-23 00:34:40 +01:00
parent 69f7810658
commit b0e4f13fba
2 changed files with 5 additions and 3 deletions
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4
src/borg/constants.py
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@ -27,7 +27,9 @@ CACHE_TAG_CONTENTS = b'Signature: 8a477f597d28d172789f06886806bc55'
# bytes. That's why it's 500 MiB instead of 512 MiB.
DEFAULT_MAX_SEGMENT_SIZE = 500 * 1024 * 1024
MAX_DATA_SIZE = 20 * 1024 * 1024
# 20 MiB minus 41 bytes for a Repository header (because the "size" field in the Repository includes
# the header, and the total size was set to 20 MiB).
MAX_DATA_SIZE = 20971479
# A few hundred files per directory to go easy on filesystems which don't like too many files per dir (NTFS)
DEFAULT_SEGMENTS_PER_DIR = 500

4
src/borg/repository.py
View File

@ -1203,7 +1203,7 @@ class LoggedIO:
return self.segment - 1 # close_segment() increments it
# MAX_OBJECT_SIZE = 20 MiB (MAX_DATA_SIZE) + 41 bytes for a Repository PUT header, which consists of
# MAX_OBJECT_SIZE = <20 MiB (MAX_DATA_SIZE) + 41 bytes for a Repository PUT header, which consists of
# a 1 byte tag ID, 4 byte CRC, 4 byte size and 32 bytes for the ID.
MAX_OBJECT_SIZE = MAX_DATA_SIZE + LoggedIO.put_header_fmt.size
assert MAX_OBJECT_SIZE == 20971561
assert MAX_OBJECT_SIZE == 20971520 == 20 * 1024 * 1024