When the block job would fail while watching it using the "--wait" option for blockcopy, virsh would rather unhelpfully report: $ virsh blockcopy vm hdc /tmp/raw.img --granularity 4096 --verbose --wait Now in mirroring phase Add a special case when the block job vanishes while waiting for it to finish to improve the message: $ virsh blockcopy vm hdc /tmp/raw.img --granularity 8192 --verbose --wait error: Block Copy unexpectedly failed --- tools/virsh-domain.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index 1a124f3..4e890f4 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -2312,8 +2312,11 @@ cmdBlockCopy(vshControl *ctl, const vshCmd *cmd) vshError(ctl, _("failed to query job for disk %s"), path); goto cleanup; } - if (result == 0) - break; + + if (result == 0) { + vshError(ctl, _("Block Copy unexpectedly failed")); + goto cleanup; + } if (verbose) vshPrintJobProgress(_("Block Copy"), info.end - info.cur, info.end); -- 2.4.1