Bug 977678 - Options handle problem for blockjob command
Options handle problem for blockjob command
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt (Show other bugs)
Unspecified Unspecified
medium Severity medium
: rc
: ---
Assigned To: Ján Tomko
Virtualization Bugs
Depends On:
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Reported: 2013-06-25 02:54 EDT by yanbing du
Modified: 2014-06-17 20:51 EDT (History)
9 users (show)

See Also:
Fixed In Version: libvirt-1.1.1-1.el7
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2014-06-13 06:29:49 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
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Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description yanbing du 2013-06-25 02:54:16 EDT
Description of problem:
For virsh blockjob, which can manage active block operations(abort or pivot), and there may be several problems which need fix about the corresponding options.
1. "--abort" and "--pivot" should be mutually exclusive;
2. "--async" should only work with "--abort";
3. "--pivot" should only work when copy job in mirroring phase, that means when the job in data copy phase, execute pivot should report error.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Start a block copy job.
#virsh blockcopy $guest $target $dest_path --wait --verbose

2. Run virsh blcokjob with
#virsh blockjob $guest $target --abort --pivot
#virsh blockjob $guest $target --async

or before copy job progress up to 100%, do pivot:
#virsh blockjob $guest $target --pivot 

Actual results:
There's no check about the problems mentioned above. 

Expected results:
Libvirt should handle these options before respond them. 

Additional info:
Comment 2 Ján Tomko 2013-07-01 09:15:45 EDT
I'm not sure we should make --abort and --pivot exclusive, since --pivot is done through virDomainBlockJobAbort API.

I have posted patches for the other two issues upstream:
Comment 3 Ján Tomko 2013-07-02 02:14:52 EDT
For --pivot: --async has no effect, since pivot is always asynchronous at the moment and we shouldn't forbid the combination:

The missing error messages are now fixed upstream:
commit c34107dfd3a25232255e6d6f559b1306ef99bb3b
Author:     Ján Tomko <jtomko@redhat.com>
AuthorDate: 2013-07-01 12:41:34 +0200
Commit:     Ján Tomko <jtomko@redhat.com>
CommitDate: 2013-07-02 07:51:51 +0200

    qemu: fix return value of qemuDomainBlockPivot on errors
    If qemuMonitorBlockJob returned 0, qemuDomainBlockPivot
    might return 0 even if an error occured.

git describe: v1.1.0-7-gc34107d
Comment 4 Luwen Su 2013-08-02 03:53:15 EDT
According the patch  , only test the procudre that do pivot when blockcopy


One terminal excute:
# virsh blockcopy test hda /var/lib/libvirt/images/c.img --wait --verbose
Block Copy: [  2 %]

At the same time , open another terminal do
# virsh blockjob test hda  --pivot
error: block copy still active: disk 'hda' not ready for pivot yet

the function went to 

if (!disk->mirroring) {
                       _("disk '%s' not ready for pivot yet"),
        goto cleanup;

So set it VERIFIED
Comment 5 Ludek Smid 2014-06-13 06:29:49 EDT
This request was resolved in Red Hat Enterprise Linux 7.0.

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