On Fri, Oct 9, 2020, 12:59 Giorgio Biacchi <gior...@di.unimi.it> wrote:

> Hi,
> due to a bug in our Ovirt integrated backup system now we have some VMs
> with snapshots in illegal state.
>
> It seems that there's an inconsistency between the db and the real
> status of images on disk.
>
> Let me show an example:
>
> engine=# select
>
> image_guid,parentid,imagestatus,vm_snapshot_id,volume_type,volume_format,active
> from images where image_group_id='e34f77cb-54d5-40d0-b539-e0a5fd512d2d';
>               image_guid              |               parentid      |
> imagestatus |            vm_snapshot_id            | volume_type |
> volume_format | active
>
> --------------------------------------+--------------------------------------+-------------+--------------------------------------+-------------+---------------+--------
>  a107b6c4-842e-4b40-9215-c965431a0c0f |
> 00000000-0000-0000-0000-000000000000 |           4 |
> d19d6ca3-1989-4c67-8ee7-c0c43b3e6d74 |           2 |             4 | f
>  a4c86a68-9123-454c-b417-1b15038a4bf2 |
> a107b6c4-842e-4b40-9215-c965431a0c0f |           1 |
> e7a405ee-8fd4-4733-ae9c-5252bf07c9d3 |           2 |             4 | f
>  f6a61f2e-26bd-4b63-97c6-d66913ce48c5 |
> a4c86a68-9123-454c-b417-1b15038a4bf2 |           1 |
> 9d0958b9-4995-4e11-a027-a32d4bac52e4 |           2 |             4 | t
> (3 rows)
>
>
> [root@host02 ~]#  lvs -o+lv_tags |grep
> e34f77cb-54d5-40d0-b539-e0a5fd512d2d
>   a107b6c4-842e-4b40-9215-c965431a0c0f
> 459011cf-ebb6-46ff-831d-8ccfafd82c8a -wi-------  149.50g
>
> IU_e34f77cb-54d5-40d0-b539-e0a5fd512d2d,MD_68,PU_00000000-0000-0000-0000-000000000000
>   f6a61f2e-26bd-4b63-97c6-d66913ce48c5
> 459011cf-ebb6-46ff-831d-8ccfafd82c8a -wi-------   10.00g
>
> IU_e34f77cb-54d5-40d0-b539-e0a5fd512d2d,MD_348,PU_a107b6c4-842e-4b40-9215-c965431a0c0f
>
> so image guid a4c86a68-9123-454c-b417-1b15038a4bf2 is not present on
> disk, i think that the image was correctly merged but not removed from
> the database.
>
> Any suggestion on how to fix the database to reflect the real situation
> on disk??
>
In those cases I delete the entry from engine DB to reflect the status of
the image chain.

>
> TIA
> --
> gb
>
> PGP Key: http://pgp.mit.edu/
> Primary key fingerprint: C510 0765 943E EBED A4F2 69D3 16CC DC90 B9CB 0F34
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