From de38b5005e946aa3714963ea4c501e279e7d3666 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Wed, 17 Apr 2019 12:11:01 -0500 Subject: 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 Signed-off-by: Eric Blake Tested-by: Richard W.M. Jones Reviewed-by: Alberto Garcia Reviewed-by: Vladimir Sementsov-Ogievskiy Signed-off-by: Kevin Wolf Tested-by: Max Reitz --- tests/qemu-iotests/126.out | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tests/qemu-iotests/126.out') diff --git a/tests/qemu-iotests/126.out b/tests/qemu-iotests/126.out index 17d03d5248..e3c4d61916 100644 --- a/tests/qemu-iotests/126.out +++ b/tests/qemu-iotests/126.out @@ -11,13 +11,13 @@ 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: 64M (67108864 bytes) +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: 64M (67108864 bytes) +virtual size: 64 MiB (67108864 bytes) backing file: base.IMGFMT (actual path: ./base.IMGFMT) *** done -- cgit v1.2.3