during some tests with ovirt-imageio-proxy and disk uploads, I had a case where while uploading the disk image I had a temporary problem with the target datastore.
So now I have one disk that results in web admin page as "Locked" (some days now) but on which I can't do anything from web admin: no remove or else. And I presume the disk is not there at all because under images directory I don't see its assigned ID (b945b1e3-56a0-4329-a563-32858ff3968e) that I see in web admin pane:
[root@ractor images]# pwd
/rhev/data-center/mnt/ractor.mydomain:_NFS__DOMAIN/556abaa8-0fcc-4042-963b-f27db5e03837/images
[root@ractor images]# ll
total 48
drwxr-xr-x. 2 vdsm kvm 4096 Jun 22 12:13 00687daf-c3f7-4eda-8a7c-cf21e491dbd6
drwxr-xr-x. 2 vdsm kvm 4096 Jun 22 15:04 0efda4c2-20be-4160-b6e4-3572d020ac8a
drwxr-xr-x. 2 vdsm kvm 4096 Aug 12 14:54 3b641c29-5196-4b2f-b1a5-fb31f8064780
drwxr-xr-x. 2 vdsm kvm 4096 Jun 22 12:13 4dd9e8b5-cb70-4065-902f-548b5081b30d
drwxr-xr-x. 2 vdsm kvm 4096 Dec 1 2015 7d5dd44f-f5d1-4984-9e76-2b2f5e42a915
drwxr-xr-x. 2 vdsm kvm 4096 Jun 22 12:13 a85b57ae-2d81-4b7e-a456-409a375bfaf3
drwxr-xr-x. 2 vdsm kvm 4096 Dec 4 2015 ba11e44c-7cf5-4ef1-a9cd-0a6630bda801
drwxr-xr-x. 2 vdsm kvm 4096 Dec 4 2015 d2f2b967-c0c3-4648-9daa-553e8ef4652b
drwxr-xr-x. 2 vdsm kvm 4096 Aug 12 14:54 d49f6096-96a2-4ef2-926a-a54a8246d303
drwxr-xr-x. 2 vdsm kvm 4096 Dec 4 2015 d9d2cd3f-0b1c-4e04-bd6a-1ffafc723344
drwxr-xr-x. 2 vdsm kvm 4096 Apr 29 15:15 da89b194-c42f-4543-9b91-982af8122d21
drwxr-xr-x. 2 vdsm kvm 4096 Apr 29 15:15 e75cf270-2fea-40bd-8cb1-3aca33a7bd9b