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40 sock
=$
(mktemp
-u /tmp
/nbdkit-test-sock.XXXXXX
)
41 files
="cache-unaligned.img $sock cache-unaligned.pid"
43 cleanup_fn
rm -f $files
45 # Create an empty base image which is not a multiple of 4K.
46 $TRUNCATE -s 130000 cache-unaligned.img
48 # Run nbdkit with the caching filter.
49 start_nbdkit
-P cache-unaligned.pid
-U $sock --filter=cache \
50 file cache-unaligned.img
52 nbdsh
--connect "nbd+unix://?socket=$sock" \
54 # Write some pattern data to the overlay and check it reads back OK.
55 buf = b"abcdefghijklm" * 10000
57 buf2 = h.pread(130000, 0)
60 # Flushing should write through to the underlying file.
63 with open("cache-unaligned.img", "rb") as file:
64 buf2 = file.read(130000)