Re: No MDS No FS after update and restart - respectfully request help to rebuild FS and maps

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Is your network up/up on all nodes? What about your mgr daemon?

Try to recover first the daemons, also, can you run a status using the asok
file?

On Sun, Mar 13, 2022, 11:39 AM GoZippy <gotadvantage@xxxxxxxxx> wrote:

> Using 9 node cluster on Proxmox
> Ceph was updated automatically with system update
> When rebooted nodes I did not set noout and just rebooted nodes - might be
> root cause of all the rebalancing and lost connectivity...
>
> I see monitors active (running) with systemctl status ceph-mon@
> <nodename>.service
>
> I see my HDD physical disks still assigned as OSD's 1-14 or whatever I have
>
> Ceph -s hangs
> Ceph commands pretty much all hang. Using system control I can turn
> monitors off and stop all services - I think...
>
> sudo systemctl stop ceph\*.service ceph\*.target
>
> seems to have stopped the services on all nodes... restarting does not
> help.
>
> /var/log/ceph is full of logs as expected (not sure where to start with
> them to look at issues)
>
> Pools and MDS do not show up anymore -maybe got purged or deleted...
>
> Wondering if there is a way to undelete maps and pool data from debian host
> or use ceph tools to make the same name file system, rebuild the map and
> not lose data on the ODS stores...
>
> SEE the following posts I was posting screenshots and logs and trying to
> sort it out but got nowhere... came here to list for last resort before I
> nuke it all and start over.. would like to save some VM's I have on those
> OSD's.
>
>
> https://forum.proxmox.com/threads/ceph-not-working-monitors-and-managers-lost.100672/page-2
>
> I read on
>
> https://lists.ceph.io/hyperkitty/list/ceph-users@xxxxxxx/message/K5X6DPSUHMPZ3P7ADV64B4YLPQPWQS5J/
>
> it might be possible to just overwrite the name and let the system "heal"
> but seems risky and I am not not exactly sure what command to use for
> making the same name file system and setting up the same metadata info
> too... where can I go about looking in logs or proxmox or otherwise to make
> sure I do use the correct names if this is an option - or is there any
> better documented way to recover a lost filesystem and restore quorum?
>
> Home-brew and learning as I go.. so forgive the lack of expertise here - I
> am learning.
>
> Respectfully,
>
> William Henderson
> 316-518-9350
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