Use wwn attr instead of removed wwid. (#1565693)

[dwlehman]

The 'wwid' attribute was removed in blivet-3.1.0. Now all disk-like
devices have a 'wwn' attribute that gets its value from udev's
ID_WWN_WITH_EXTENSION property.

This supercedes #1499 and also fixes the display formatting issue contained therein.

[poncovka]

Looks good to me. Thanks!

[jkonecny12]

jenkins, test this please

[jkonecny12]

Looks good to me too.

[jkonecny12]

It looks like it needs a little bit more polishing.

[jkonecny12]

Also I'm not sure if this is happening because of my settings but when I'm trying to attach 1 disk from 2 different ip addresses there is no wwn value showed. Do you know why it is not there?

Also I think we need to change tab name to WWN when you look on that screenshot there is WWID.

[jkonecny12]

We need to solve that crash above.

Crash should be resolved.

[jkonecny12]

This looks correct, however it looks that there is a bug in blivet. Based on my tests the wwn attribute is empty for multipath device.

New wwn:

Old wwid:

I was looking into that in debugger and the disk.wwn is really empty. This is causing crash when I select mpath device and clicking on back button.

Another question is if the WWID column title in the table shouldn't change to WWN too?

[jkonecny12]

Ohh I see you already have PR for that. Then please leave here a note when new blivet with this fix will be released.

[dwlehman]

I'm planning to build blivet-3.1.0.b2 (storaged-project/blivet@cd698c04) on Tuesday (tomorrow) for rawhide. I don't have firm plans for any other builds as of now.

[jkonecny12]

OK thanks, I will test and merge this tomorrow.

[rvykydal]

I've tested the PR with latest rawhide Fedora-Rawhide-20180802.n.0 and it seem to be good.
Once the patches mentioned above for blivet (storaged-project/blivet#701) are built for rhel we can merge the PR.