vhdx: Fix "log that needs to be replayed" error message
The arguments of error_setg_errno() should yield a short error string without newlines. Here, we try to append additional help to the error message by embedding newlines in the error string. That's nice, but it's doesn't play nicely with the errno part. tests/qemu-iotests/070.out shows the resulting mess: can't open device TEST_DIR/iotest-dirtylog-10G-4M.vhdx: VHDX image file 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx' opened read-only, but contains a log that needs to be replayed. To replay the log, execute: qemu-img check -r all 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx': Operation not permitted Switch to error_setg() and error_append_hint(). Result: can't open device TEST_DIR/iotest-dirtylog-10G-4M.vhdx: VHDX image file 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx' opened read-only, but contains a log that needs to be replayed To replay the log, run: qemu-img check -r all 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx' Signed-off-by: NMarkus Armbruster <armbru@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-Id: <1450452927-8346-21-git-send-email-armbru@redhat.com>
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