VDI not showing in XO 5 from Source.

[Pilow]

tried to deploy a NEW vm for testing purpose on an impacted SR :

and it appears ! it's the only VDI visible, there are OTHER vms on this same SR that have invisible disks

all as if nothing

I guess we could migrate the impacted VMs out of this SR and back, and it would correct the issue !

does that help ?!

[olivierlambert]

@anthoineb or someone from the @team-storage, you might want to take a look (IDK if it's a known problem internally)

[anthoineb]

@olivierlambert Yes, we saw this before, we are investigating.

[olivierlambert]

Thanks!

[wilsonqanda]

Hello All,

Found some roundabout solutions you may want to try:
https://xcp-ng.org/forum/post/101370

[Pilow]

@wilsonqanda tried your workaround on a halted VM, and it worked !
If i snapshot -> disk still invisible
delete snapshot - > disk still invisible

but

if i snapshot --> disk still invisible
revert snapshot (with take snapshot option) --> disk APPEAR again
delete the two snapshots -> disks still there

edit : even without the take snapshot before revert, it is working, tried on another VM

[wilsonqanda]

@Pilow Lol glad I was able to help. Its only if you have a few VMs having hundreds will be a nightmare... giod luck to those that has that issue. In the meantime I will use the method I mention for now.

[Pilow]

@wilsonqanda @anthoineb @olivierlambert

we are now impacted on a SR that didn't have the problem... now all disks are invisible and DASHBOARD/HEALTH show some strange dates on base copies...

halt/snap/revert correct the issue but needs to be done on each VM

all VDIs seem to be regrouped strangely on unique base copy

there is something seriously wrong happening

no impact on production of VMs though, just management issues in XOA web ui
even backups are OK.

halp.

[Pilow]

i could be wrong but in

/usr/local/lib/node_modules/xo-server/dist/xapi-object-to-xo.mjs

I see a lot of

if (obj.is_a_snapshot || obj.$snapshot_of !== undefined)

seems to be a way of managing both "old version" and "new version" (or "broader version") to define if a VDI is a snapshot
there has been an evolution in the code at some point ?

and someone somewhere in recent updates (10 dec) forgot the || on some important action

my recent SR problem appeared when I was snapshoting/deleting VDI/reverting snapshot
all VMs suddenly didn't have visible VDIs anymore on the whole SR.

I could be wrong, but the fact that ALL VDIs are now seen as snapshot seems smelly with this ||

https://github.com/vatesfr/xen-orchestra/commit/85596da79217070bf4431135bbb5b0d2cf04e45b

0 spacotte-vates committed to vatesfr/xen-orchestra

fix(xo-server): improve handling of xapi snapshots (#9231)

In some cases, when converting an xapi object into an xo object, the xapi.is_a_snapshot param may be set to false even tho the xapi.snapshotOf refers to another xapi object. Handle this case better.

[wilsonqanda]

@Pilow now that you mention that everything is seen as snapshot i remember all my ISO are seen as snapshots too... so most iso cannot be mounted until i drag them in a folder then put them back in same folder so XO could reprocess all the iso correctly. This might be a related issue to all the snapshots for the VMs.

[Pilow]

@wilsonqanda strangely my ISOs were not impacted, except for the default XCP TOOLS iso that seems gone

the "base copy" regroup bug on homepage of the SR, and the orphan base copies in the DASHBOARD/HEALTH seems to be linked to same problem

we have much fast clones VMs depending on those base copies seen as orphan

we are narrowing on the problem, just need the dev to level it, have faith

[wilsonqanda]

@Pilow Check the iso does it have a snapshot icon in the drive?

Next it show up fine until u want to create a vm in the new vm pg it think they are snapshots and you cant select the ISOs. This is when the problem arise.

Yep the dev here are super reaponsive. Have been a long term user and here and love their support . I mostly just been playing with things and learn so much by tinkering

[Pilow]

@wilsonqanda it's an SMB iso SR on my end, I think this is why it is not impacted

can't snapshot a file on Microsoft SMB share

[wilsonqanda]

@Pilow my is SMB too but it saw the issue. I use windows to login and drag all iso into a new created folder in the iso folder and drag it back out delete the newly created folder and all my iso is back to normal. It was a quick thing.

[Pilow]

@wilsonqanda HAHA. problem resolved instantly for me on last SR I had the troubles

playing with the "rescan all ISO SRs" made the guest tools iso reappear

AND ALL MY OTHER VDIs ON THIS SR/HOST that were invisible

donnnnn't ask me HOW...

but this trick didn't work on other local RAID5 SR that have the problem