qemu/tests/qemu-iotests/126.out
Eric Blake de38b5005e qemu-img: Saner printing of large file sizes
Disk sizes close to INT64_MAX cause overflow, for some pretty
ridiculous output:

  $ ./nbdkit -U - memory size=$((2**63 - 512)) --run 'qemu-img info $nbd'
  image: nbd+unix://?socket=/tmp/nbdkitHSAzNz/socket
  file format: raw
  virtual size: -8388607T (9223372036854775296 bytes)
  disk size: unavailable

But there's no reason to have two separate implementations of integer
to human-readable abbreviation, where one has overflow and stops at
'T', while the other avoids overflow and goes all the way to 'E'. With
this patch, the output now claims 8EiB instead of -8388607T, which
really is the correct rounding of largest file size supported by qemu
(we could go 511 bytes larger if we used byte-accurate sizing instead
of rounding up to the next sector boundary, but that wouldn't change
the human-readable result).

Quite a few iotests need updates to expected output to match.

Reported-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Tested-by: Max Reitz <mreitz@redhat.com>
2019-04-30 15:29:00 +02:00

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QA output created by 126
=== Testing plain files ===
Formatting 'TEST_DIR/a:b.IMGFMT', fmt=IMGFMT size=67108864
Formatting 'file:TEST_DIR/a:b.IMGFMT', fmt=IMGFMT size=67108864
=== Testing relative backing filename resolution ===
Formatting 'TEST_DIR/image:base.IMGFMT', fmt=IMGFMT size=67108864
Formatting 'TEST_DIR/image:top.IMGFMT', fmt=IMGFMT size=67108864 backing_file=./image:base.IMGFMT
image: TEST_DIR/image:top.IMGFMT
file format: IMGFMT
virtual size: 64 MiB (67108864 bytes)
backing file: ./image:base.IMGFMT (actual path: TEST_DIR/./image:base.IMGFMT)
Formatting 'base.IMGFMT', fmt=IMGFMT size=67108864
Formatting 'file:image:top.IMGFMT', fmt=IMGFMT size=67108864 backing_file=base.IMGFMT
image: ./image:top.IMGFMT
file format: IMGFMT
virtual size: 64 MiB (67108864 bytes)
backing file: base.IMGFMT (actual path: ./base.IMGFMT)
*** done