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block: Improve some block-commit, block-stream error messages

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block-commit defaults @base-node to the deepest backing image.  When
there is none, it fails with "Base 'NULL' not found".  Improve to
"There is no backing image".

block-commit and block-stream reject a @base argument that doesn't
resolve with "Base 'BASE' not found".  Commit 6b33f3ae8b "qemu-img:
Improve commit invalid base message" improved this message in
qemu-img.  Improve it here, too: "Can't find '%s' in the backing
chain".

QERR_BASE_NOT_FOUND is now unused.  Drop.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Max Reitz <mreitz@redhat.com>
Cc: qemu-block@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201113082626.2725812-4-armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Markus Armbruster 2020-11-13 09:26:19 +01:00
parent f820af8743
commit b0d7be2a62
3 changed files with 15 additions and 14 deletions
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2
include/qapi/qmp/qerror.h
View file

@ -16,8 +16,6 @@
* These macros will go away, please don't use in new code, and do not
* add new ones!
*/
#define QERR_BASE_NOT_FOUND \
"Base '%s' not found"
#define QERR_BUS_NO_HOTPLUG \
"Bus '%s' does not support hotplugging"