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I have a cluster with say 10 nodes running Ceph/Proxmox last versions. On 1 of the nodes I want to remove Ceph but it must still be available in Proxmox. How can I do this safely, without deleting important data that is for example in /etc/pve ? Thanks!

I finally upgraded succesfully our cluster to Proxmox 6, Corosync 3 and Ceph Nautilus without (!) any downtime. It took me about 2 weeks. There were some issues, like you have to remove kernelcare first if you start the Proxmox upgrade. And had problems with my OSD's that would not start after a...

Solution: In /etc/multipath/wwids you can # a line for the disk you want to add in the GUI of Proxmox. Then restart multipath: service multipathd restart Now you can check if your disk still is available (it should be not available): multipath -ll gdisk /dev/sdX X - Z - Wipe out all (all of...

Alwin, that blacklisting was a GREAT solution... I can ceph-volume it again! I will test some more with it and will post the solution.

I have upgraded to Proxmox 6 and Ceph Nautilus. They worked in Luminous but got errors after the upgrade and got the message that the OSD's will not be working after a reboot of the node. So I decided to delete these Disks and add them again. I tried everything from formatting dd reboot etc but...

I opened a new topic, because has nothing to do anymore with the error description in the topic.

Dear all, I am trying to add an used formatted SSD in Proxmox 6 with Ceph 14.2.4 Nautilus. It shows up under disks. Under Ceph / OSD I choose for CREATE: OSD. But it says 'No Disks Unused'. But under DB Disk or WAL Disk I can choose the disk, but can't create it. I am really struggling with...

I found this in ceph-volume log: [2019-11-05 17:15:42,101][ceph_volume.process][INFO ] stderr Device /dev/sdc excluded by a filter. [2019-11-05 17:15:42,160][ceph_volume][ERROR ] exception caught by decorator Traceback (most recent call last): File...

I can't find a thing :( I really don't understand why I can't re-add these SSD's. They were working great before the Ceph upgrade.

ceph versions { "mon": { "ceph version 14.2.4 (65249672c6e6d843510e7e01f8a4b976dcac3db1) nautilus (stable)": 3 }, "mgr": { "ceph version 14.2.4 (65249672c6e6d843510e7e01f8a4b976dcac3db1) nautilus (stable)": 3 }, "osd": { "ceph version 14.2.4...

I did that already several times, even tried to load an older kernel. Now running Linux 5.0.21-3-pve #1 SMP PVE 5.0.21-7 (Mon, 30 Sep 2019 09:11:02 +0200) Any other ideas?

sgdisk -Z /dev/sdd Creating new GPT entries. GPT data structures destroyed! You may now partition the disk using fdisk or other utilities. ==== pveceph osd create /dev/sdd device '/dev/sdd' is already in use ==== sfdisk -l /dev/sdd Disk /dev/sdd: 447.1 GiB, 480103981056 bytes, 937703088...

lrwxrwxrwx 1 root root 0 Nov 5 14:49 /sys/block/sdd -> ../devices/pci0000:ae/0000:ae:00.0/0000:af:00.0/host0/port-0:3/end_device-0:3/target0:0:3/0:0:3:0/block/sdd

But these are all local SSD's (per node 6x SSD), I don't understand what you mean... this is not a NAS.

lsblk => NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 1.1T 0 disk ├─sda1 8:1 0 1007K 0 part ├─sda2 8:2 0 1.1T 0 part └─sda9 8:9 0 8M 0 part sdb 8:16 0 1.1T 0...

This didn't help for me, are you sure this was the solution?

I have destroyed the OSD (with hdparm, time fswipe and zap) but it stays unused in Proxmox if I want to add it 'No disks unused'. Should I partition it first? ===== fdisk => Unpartitioned space /dev/sdd: 447.1 GiB, 480102932480 bytes, 937701040 sectors Units: sectors of 1 * 512 = 512 bytes...

Thanks for your fast answer, but I get this error or is this no problem? root@node003:/dev# ceph-volume simple activate --all --> activating OSD specified in /etc/ceph/osd/9-168c72e2-02a2-480e-818b-861f3e2dff0c.json --> RuntimeError: Unable to activate OSD None - no "uuid" key found for data