[ceph-users] Ceph / Debian 11 guest / corrupted file system

2022-07-11 Thread Hermann Himmelbauer
Dear Ceph users, I have a ceph cluster (ceph version 16.2.7) running on Proxmox 7 (Debian 11) with a Debian 11 guest (11.3). On this specific host, every ~ 3-4 weeks, the file system is set to readonly. I then need to reboot the system and manually check the filesystem, then it works again.

[ceph-users] Suitable 10G Switches for ceph storage - any recommendations?

2021-05-19 Thread Hermann Himmelbauer
Dear Ceph users, I am currently constructing a small hyperconverged Proxmox cluster with ceph as storage. So far I always had 3 nodes, which I directly linked together via 2 bonded 10G network interfaces for the Ceph storage, so I never needed any switching devices. This new cluster has more nodes

[ceph-users] Ceph Performance of Micron 5210 SATA?

2020-03-05 Thread Hermann Himmelbauer
Hi, Does someone know if the following harddisk has a decent performance in a ceph cluster: Micron 5210 ION 1.92TB, SATA (MTFDDAK1T9QDE-2AV1ZABYY) The spec state, that the disk has power loss protection, however, I'd nevertheless like to make sure that all goes well with this disk. Best Regards,

[ceph-users] Re: Slow write speed on 3-node cluster with 6* SATA Harddisks (~ 3.5 MB/s)

2019-11-06 Thread Hermann Himmelbauer
#x27;s wrong with your ceph. If you get > adequate performance, something's wrong with your VM settings. > > 5 ноября 2019 г. 14:31:38 GMT+03:00, Hermann Himmelbauer > пишет: > > Hi, > Thank you for your quick reply, Proxmox offers me "writeback" >

[ceph-users] Re: Slow write speed on 3-node cluster with 6* SATA Harddisks (~ 3.5 MB/s)

2019-11-05 Thread Hermann Himmelbauer
Hi, Thank you for your quick reply, Proxmox offers me "writeback" (cache=writeback) and "writeback unsafe" (cache=unsafe), however, for my "dd" test, this makes no difference at all. I still have write speeds of ~ 4,5 MB/s. Perhaps "dd" disables the write cache? Would it perhaps help to put the

[ceph-users] Slow write speed on 3-node cluster with 6* SATA Harddisks (~ 3.5 MB/s)

2019-11-04 Thread Hermann Himmelbauer
Hi, I recently upgraded my 3-node cluster to proxmox 6 / debian-10 and recreated my ceph cluster with a new release (14.2.4 bluestore) - basically hoping to gain some I/O speed. The installation went flawlessly, reading is faster than before (~ 80 MB/s), however, the write speed is still really sl

[ceph-users] Choosing suitable SSD for Ceph cluster

2019-10-24 Thread Hermann Himmelbauer
Hi, I am running a nice ceph (proxmox 4 / debian-8 / ceph 0.94.3) cluster on 3 nodes (supermicro X8DTT-HIBQF), 2 OSD each (2TB SATA harddisks), interconnected via Infiniband 40. Problem is that the ceph performance is quite bad (approx. 30MiB/s reading, 3-4 MiB/s writing ), so I thought about plug