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* block: Clarify error messages pertaining to 'node-name'Connor Kuehl2021-03-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some error messages contain ambiguous representations of the 'node-name' parameter. This can be particularly confusing when exchanging QMP messages (C = client, S = server): C: {"execute": "block_resize", "arguments": { "device": "my_file", "size": 26843545600 }} S: {"error": {"class": "GenericError", "desc": "Cannot find device=my_file nor node_name="}} ^^^^^^^^^ This error message suggests one could send a message with a key called 'node_name': C: {"execute": "block_resize", "arguments": { "node_name": "my_file", "size": 26843545600 }} ^^^^^^^^^ but using the underscore is actually incorrect, the parameter should be 'node-name': S: {"error": {"class": "GenericError", "desc": "Parameter 'node_name' is unexpected"}} This behavior was uncovered in bz1651437, but I ended up going down a rabbit hole looking for other areas where this miscommunication might occur and changing those accordingly as well. Fixes: https://bugzilla.redhat.com/1651437 Signed-off-by: Connor Kuehl <ckuehl@redhat.com> Message-Id: <20210305151929.1947331-2-ckuehl@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* iotests: Fix _send_qemu_cmd with bash 5.1Max Reitz2020-12-181-5/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | With bash 5.1, the output of the following script changes: a=("double space") a=${a[@]:0:1} echo "$a" from "double space" to "double space", i.e. all white space is preserved as-is. This is probably what we actually want here (judging from the "...to accommodate pathnames with spaces" comment), but before 5.1, we would have to quote the ${} slice to get the same behavior. In any case, without quoting, the reference output of many iotests is different between bash 5.1 and pre-5.1, which is not very good. The output of 5.1 is what we want, so whatever we do to get pre-5.1 to the same result, it means we have to fix the reference output of basically all tests that invoke _send_qemu_cmd (except the ones that only use single spaces in the commands they invoke). Instead of quoting the ${} slice (cmd="${$@: 1:...}"), we can also just not use array slicing and replace the whole thing with a simple "cmd=$1; shift", which works because all callers quote the whole $cmd argument anyway. Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201217153803.101231-3-mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com>
* iotests: Specify explicit backing format where sensibleEric Blake2020-07-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are many existing qcow2 images that specify a backing file but no format. This has been the source of CVEs in the past, but has become more prominent of a problem now that libvirt has switched to -blockdev. With older -drive, at least the probing was always done by qemu (so the only risk of a changed format between successive boots of a guest was if qemu was upgraded and probed differently). But with newer -blockdev, libvirt must specify a format; if libvirt guesses raw where the image was formatted, this results in data corruption visible to the guest; conversely, if libvirt guesses qcow2 where qemu was using raw, this can result in potential security holes, so modern libvirt instead refuses to use images without explicit backing format. The change in libvirt to reject images without explicit backing format has pointed out that a number of tools have been far too reliant on probing in the past. It's time to set a better example in our own iotests of properly setting this parameter. iotest calls to create, rebase, and convert are all impacted to some degree. It's a bit annoying that we are inconsistent on command line - while all of those accept -o backing_file=...,backing_fmt=..., the shortcuts are different: create and rebase have -b and -F, while convert has -B but no -F. (amend has no shortcuts, but the previous patch just deprecated the use of amend to change backing chains). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20200706203954.341758-9-eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* iotests: Include QMP input in .out filesEric Blake2019-11-191-0/+6
| | | | | | | | | | | | | | We generally include relevant HMP input in .out files, by virtue of the fact that HMP echoes its input. But QMP does not, so we have to explicitly inject it in the output stream (appropriately filtered to keep the tests passing), in order to make it easier to read .out files to see what behavior is being tested (especially true where the output file is a sequence of {'return': {}}). Suggested-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20191114213415.23499-4-eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
* iotests: Check that images are in read-only mode after block-commitAlberto Garcia2019-04-301-0/+35
This tests the fix from the previous patch. Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>