How about testing the actual network throughput with iperf? Even today
there are speed/duplex mismatches on switch ports. And what everyone else
said about saturation etc.
We get, at absolute worst, 600 MB/s on a 10G connection.
--
Alex Gorbachev
https://alextelescope.blogspot.com
On Tue, Mar
Hi,
during deployment of a small testcluster on two existing servers I got
multiple benchmark results I don't understand.
In summary, I think the rados benchmark values are okay for my limited
setup - I got ~80 MiB/s for write, ~300 MiB/s for reads. But for rbd
benchmarks, the values dropped
What the command I pasted did was (after diffing the CRUSH map output):
- Move all the IDs from the main tree into the hdd class parallel tree
- Assign fresh IDs to the main tree
- Change all the "step take default" to "step take default class hdd" in
every CRUSH rule
Moving the IDs over is what
It was installed with 19.2.0:
dnf history info 20 shows:
ceph01[0]:~# dnf history info 20
Transaction ID : 20
Begin time : Tue 14 Jan 2025 07:22:00 PM CET
Begin rpmdb :
0fac0c11ba074f9635117d0b3d4970e6d26e8d2b40bfe8b93d22fd12147260b7
End time : Tue 14 Jan 2025 07:22:04 PM CET (4 s
While reading about mons, I've come across two documentation issues.
1. The 2013 blog "Monitors and Paxos, a chat with Joao" has a broken link.
- The broken link returns a 404
- The bad URL is http://ceph.com/dev-notes/cephs-new-monitor-changes/
- That bad URL is on line 8 at
https:/
Hi,
It looks like the CFP opens next week, I'd expect there'll be an announcement
then:
https://ceph.io/en/community/events/2025/ceph-days-london/
Cheers,
Dave
--
** Dave Holland ** Systems Support -- Informatics Systems Group **
** d...@sanger.ac.uk **Wellcome Sanger Institute, Hinxton
Hi,
I was interested in applying to give a talk at the upcoming Ceph day in
London this June (04/06/25) but I can't find an email or form to submit
my proposal to. Is there an email I can send my proposal to?
Kindest regards,
Ivan Clayson
--
Ivan Clayson
-
Scientific Computi
Hi,
There is. You could change container image's signature in the unit.run file of
the MGR service.
For example to switch ceph01's MGR from 17.2.6 to 17.2.7:
# Backup the unit.run file
$ cp /var/lib/ceph/$(ceph fsid)/mgr.ceph01.eydqvm/unit-run{,.bak}
# Change container image's signature. You c
Hi,
Looks like I was a bit overly keen and misread the CFP opening date!
Thanks for letting me know!
Kindest regards,
Ivan
On 10/03/2025 15:49, Dave Holland wrote:
CAUTION: This email originated from outside of the LMB:
.-d...@sanger.ac.uk-.
Do not click links or open attachments unless you
After the adjustment, the RGW service cannot be started, and the cluster and
data cannot be restored to the normal state. The rgw service startup prompts an
initialization timeout
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Aha, that's what I was looking for! And indeed, it seems to do exactly
what I thought of doing, just move the bucket IDs. I mistakenly thought
this functionality was for people who already had multiple parallel
hierarchies in their crush tree, but it also works for a single default
hierarchy.
This
Hello everyone,
I was testing out the Archive sync module with 2 zones, one as the master zone
and another one as a read-only archive tier zone. The sync policy is set with a
standard hierarchy of Group/Flow/Pipe. Came across this scenario: overwriting
an object in master zone does result in ad
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