de38b5005e
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>
113 lines
4.3 KiB
Plaintext
113 lines
4.3 KiB
Plaintext
=== Successful image creation (defaults) ===
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi", "size": 0}}}
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{"return": {}}
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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{"execute": "blockdev-add", "arguments": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi", "node-name": "imgfile"}}
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{"return": {}}
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "vdi", "file": "imgfile", "size": 134217728}}}
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{"return": {}}
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 128 MiB (134217728 bytes)
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cluster_size: 1048576
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[{ "start": 0, "length": 134217728, "depth": 0, "zero": true, "data": false}]
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=== Successful image creation (explicit defaults) ===
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi", "size": 0}}}
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{"return": {}}
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "vdi", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi"}, "preallocation": "off", "size": 67108864}}}
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{"return": {}}
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 64 MiB (67108864 bytes)
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cluster_size: 1048576
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[{ "start": 0, "length": 67108864, "depth": 0, "zero": true, "data": false}]
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=== Successful image creation (with non-default options) ===
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi", "size": 0}}}
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{"return": {}}
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "vdi", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi"}, "preallocation": "metadata", "size": 33554432}}}
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{"return": {}}
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 32 MiB (33554432 bytes)
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cluster_size: 1048576
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[{ "start": 0, "length": 3072, "depth": 0, "zero": false, "data": true, "offset": 1024},
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{ "start": 3072, "length": 33551360, "depth": 0, "zero": true, "data": true, "offset": 4096}]
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=== Invalid BlockdevRef ===
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "vdi", "file": "this doesn't exist", "size": 33554432}}}
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{"return": {}}
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Job failed: Cannot find device=this doesn't exist nor node_name=this doesn't exist
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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=== Zero size ===
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 0}}}
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{"return": {}}
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 0 B (0 bytes)
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cluster_size: 1048576
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=== Maximum size ===
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 562949819203584}}}
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{"return": {}}
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 512 TiB (562949819203584 bytes)
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cluster_size: 1048576
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=== Invalid sizes ===
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 18446744073709551104}}}
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{"return": {}}
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Job failed: Unsupported VDI image size (size is 0xfffffffffffffe00, max supported is 0x1fffff8000000)
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 9223372036854775808}}}
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{"return": {}}
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Job failed: Unsupported VDI image size (size is 0x8000000000000000, max supported is 0x1fffff8000000)
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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{"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 562949819203585}}}
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{"return": {}}
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Job failed: Unsupported VDI image size (size is 0x1fffff8000001, max supported is 0x1fffff8000000)
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{"execute": "job-dismiss", "arguments": {"id": "job0"}}
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{"return": {}}
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