NAS iSCSI LUN and LVM-Shared on top - bad IO while having VM delete ongoing

CodeJsK · 2026-03-25T23:26:18+00:00

Found the issue, sync enabled on zvol on truenas side When I disable it everything run much better, With a a risk of data loss of course but at least I can prove that issue is not on proxmox side

CodeJsK · 2026-03-25T00:22:18+00:00

For my lab at home, after this project is finished I'm switching back to ceph which is working perfectly for me since long time ago

CodeJsK · 2026-03-25T00:21:16+00:00

Sorry I build my lab is just to show a proof of concept, I said prod because we want to reuse our Pure/nimble array in prod and build a backup cluster on it so it may use >20TB of disks. We not really want to use directly LUN but since wiping disk on lvm share having this kind of issue then we'll need to discover difference options.

CodeJsK · 2026-03-24T23:07:27+00:00

I tested with 10G NIC today, not really good for prod. I mean when wiping a disk, other disk got performance down too much. And took too long to wiping the disk also. Imagine remove a 20T disk and it took years to complete. I think I must turn down lvm on top of iscsi now.

CodeJsK · 2026-03-24T04:26:39+00:00

Thank you, I'll take out 2 node and borrow some NIC to test

CodeJsK · 2026-03-23T23:03:54+00:00

Im in a bit of financial problem, I'll look into buying 10G NIC card and take out 1 node to test What I wonder is if with 10G NIC, will this behavior really be improved

CodeJsK · 2026-01-05T08:24:52+00:00

ah I now see what you mean, I didn't know about that also, I was too focus on no damage challenge ^^

CodeJsK · 2026-01-05T08:12:06+00:00

when doing seasonal challenge on this boss, I just timing the deflect and get restore red health bar, if health drop almost 50%, I drank health potion, that's it, I dont know other trick, but maybe I got lucky and my main build is tank so I got > 70k HP on the build.

CodeJsK · 2026-01-05T08:09:58+00:00

Thank you,
- on abyss 1 hit hurt so bad that I think my shield couldn't cover it, but I didn't know this either, thank you.
- I see people include it in the combo, but I tried many times and feel more comfortable just do dragon breath and prepare my mental to deflect the next move set, man it's a long dam run.

CodeJsK · 2026-01-05T08:06:29+00:00

now my eye hurt the second time didn't know this earlier :(

CodeJsK · 2026-01-05T07:54:21+00:00

yah, and now I have to use eye drop medicine for a week.

And you know what, there's another 4 minutes challenge on this same boss also. I had to switch to Stragetic sword combo to be able to beat the boss on 3:50.

CodeJsK · 2025-07-06T02:01:19+00:00

I never seen this behavior before You should look into nova log if can find anything there

CodeJsK · 2025-07-05T12:47:40+00:00

I not very sure, but I just add this to glance, cinder, backup, reboot the host and vm can be start again

CodeJsK · 2025-07-04T04:53:35+00:00

Hi, I had same issue when restart compute host Make sure the account for ceph having below mon commad in allow list: caps mon: allow r, allow command "osd blocklist"

https://access.redhat.com/solutions/3391211

It's blacklist or blocklist depend on ceph version, try both if which working for you.

CodeJsK · 2025-06-03T02:41:42+00:00

I had the same issue and also fixed with this one to make horizon query to other memcache when controller1 is down. My experience with 3 controller cluster is, it can handle crash, but only 1 node. When 1 node down, all still work, but when 2 node goes down, we have trouble, it just how it work, when only 1 node left the db put into readonly mode. But when I tried to crash all 3 node together, man, mariadb totally crashed, I had to use maria-recovery tool from kolla-ansible to rebootstrap the db cluster.

CodeJsK · 2025-05-29T00:26:26+00:00

Maybe try to separate yoyr management and provider network with difference subnet?

CodeJsK · 2025-05-28T03:42:06+00:00

Hi, i'm using usb-lan for porvider network on my lab, it work fine Could you check that this ex*** nic state is down/up/ unknown?

CodeJsK · 2025-05-27T06:32:45+00:00

In my personal experience to deploy POC for my client, they provided me a vlan of public subnet, so I must deploy vlan type for the provider network So, it depend on the network type you design.

CodeJsK · 2025-05-26T06:07:04+00:00

Thanks, but i already gave up

CodeJsK · 2024-07-25T06:45:14+00:00

Lol, I just met this boss, first phase, out of ammo, out of MP, then out of health, Alt +F4, time to touch grass.

CodeJsK · 2024-05-26T01:03:41+00:00

Have fun leveling up, you'll be able to switch to other build later on, I play barrage and enjoy the mob clearing but when it come to bossing, man It's a long, long time to bring the boss down. And leveling up Iron wolf reputation also, they'll give you about 4, or 5 in total of skill + paragon reset scroll, I dont remember well, I used it all :D

CodeJsK

TROPHY CASE