11:27 a.m.
Peter's review of my addition of active block commit pointed out
some issues that I had copied from block copy. It makes sense to
allow the shorter command-line of 'blockcopy $dom $disk --pivot'
without having to explicitly specify --wait. And my use of
embedded ?: ternaries bordered on unreadable.
* tools/virsh-domain.c (cmdBlockCopy): Make --pivot and --finish
imply --wait. Drop excess ?: operators.
* tools/virsh.pod (blockcopy): Update documentation.
Signed-off-by: Eric Blake <eblake(a)redhat.com>
---
tools/virsh-domain.c | 25 ++++++++++++++-----------
tools/virsh.pod | 17 +++++++++--------
2 files changed, 23 insertions(+), 19 deletions(-)
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index e9162db..294b594 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -1786,15 +1786,15 @@ static const vshCmdOptDef opts_block_copy[] = {
},
{.name = "timeout",
.type = VSH_OT_INT,
- .help = N_("with --wait, abort if copy exceeds timeout (in seconds)")
+ .help = N_("implies --wait, abort if copy exceeds timeout (in seconds)")
},
{.name = "pivot",
.type = VSH_OT_BOOL,
- .help = N_("with --wait, pivot when mirroring starts")
+ .help = N_("implies --wait, pivot when mirroring starts")
},
{.name = "finish",
.type = VSH_OT_BOOL,
- .help = N_("with --wait, quit when mirroring starts")
+ .help = N_("implies --wait, quit when mirroring starts")
},
{.name = "async",
.type = VSH_OT_BOOL,
@@ -1808,10 +1808,10 @@ cmdBlockCopy(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
bool ret = false;
- bool blocking = vshCommandOptBool(cmd, "wait");
bool verbose = vshCommandOptBool(cmd, "verbose");
bool pivot = vshCommandOptBool(cmd, "pivot");
bool finish = vshCommandOptBool(cmd, "finish");
+ bool blocking = vshCommandOptBool(cmd, "wait");
int timeout = 0;
struct sigaction sig_action;
struct sigaction old_sig_action;
@@ -1822,6 +1822,7 @@ cmdBlockCopy(vshControl *ctl, const vshCmd *cmd)
bool quit = false;
int abort_flags = 0;
+ blocking |= vshCommandOptBool(cmd, "timeout") || pivot || finish;
if (blocking) {
if (pivot && finish) {
vshError(ctl, "%s", _("cannot mix --pivot and
--finish"));
@@ -1844,8 +1845,7 @@ cmdBlockCopy(vshControl *ctl, const vshCmd *cmd)
sigaction(SIGINT, &sig_action, &old_sig_action);
GETTIMEOFDAY(&start);
- } else if (verbose || vshCommandOptBool(cmd, "timeout") ||
- vshCommandOptBool(cmd, "async") || pivot || finish) {
+ } else if (verbose || vshCommandOptBool(cmd, "async")) {
vshError(ctl, "%s", _("missing --wait option"));
return false;
}
@@ -1911,11 +1911,14 @@ cmdBlockCopy(vshControl *ctl, const vshCmd *cmd)
vshError(ctl, _("failed to finish job for disk %s"), path);
goto cleanup;
}
- vshPrint(ctl, "\n%s",
- quit ? _("Copy aborted") :
- pivot ? _("Successfully pivoted") :
- finish ? _("Successfully copied") :
- _("Now in mirroring phase"));
+ if (quit)
+ vshPrint(ctl, "\n%s", _("Copy aborted"));
+ else if (pivot)
+ vshPrint(ctl, "\n%s", _("Successfully pivoted"));
+ else if (finish)
+ vshPrint(ctl, "\n%s", _("Successfully copied"));
+ else
+ vshPrint(ctl, "\n%s", _("Now in mirroring phase"));
ret = true;
cleanup:
diff --git a/tools/virsh.pod b/tools/virsh.pod
index 84a60a7..77013f5 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -804,8 +804,8 @@ I<bandwidth> specifies copying bandwidth limit in MiB/s,
although for
qemu, it may be non-zero only for an online domain.
=item B<blockcopy> I<domain> I<path> I<dest> [I<bandwidth>]
[I<--shallow>]
-[I<--reuse-external>] [I<--raw>] [I<--wait> [I<--verbose>]
-[{I<--pivot> | I<--finish>}] [I<--timeout> B<seconds>]
[I<--async>]]
+[I<--reuse-external>] [I<--raw>] [I<--wait> [I<--async>]
[I<--verbose>]]
+[{I<--pivot> | I<--finish>}] [I<--timeout> B<seconds>]
Copy a disk backing image chain to I<dest>. By default, this command
flattens the entire chain; but if I<--shallow> is specified, the copy
@@ -834,12 +834,13 @@ faithful copy of that point in time. However, if I<--wait> is
specified,
then this command will block until the mirroring phase begins, or cancel
the operation if the optional I<timeout> in seconds elapses or SIGINT is
sent (usually with C<Ctrl-C>). Using I<--verbose> along with
I<--wait>
-will produce periodic status updates. Using I<--pivot> or I<--finish>
-along with I<--wait> will additionally end the job cleanly rather than
-leaving things in the mirroring phase. If job cancellation is triggered,
-I<--async> will return control to the user as fast as possible, otherwise
-the command may continue to block a little while longer until the job
-is done cleaning up.
+will produce periodic status updates. Using I<--pivot> (similar to
+B<blockjob> I<--pivot>) or I<--finish> (similar to B<blockjob>
I<--abort>)
+implies I<--wait>, and will additionally end the job cleanly rather than
+leaving things in the mirroring phase. If job cancellation is triggered
+by timeout or by I<--finish>, I<--async> will return control to the user
+as fast as possible, otherwise the command may continue to block a little
+while longer until the job has actually cancelled.
I<path> specifies fully-qualified path of the disk.
I<bandwidth> specifies copying bandwidth limit in MiB/s.
--
1.9.3