Hi,
*snipsnap*
But I still don't seem to be able to mount a CephFS volume:
mount: /mnt/web: wrong fs type, bad option, bad superblock on
ceph01,ceph02:/volumes/web/www/457c578c-95a1-4f28-aafa-d2c7e9603042, missing
codepage or helper program, or other error.
The program mount.ceph is not ins
Hi,
On 09.07.25 21:21, Özkan Göksu wrote:
Hello Wesley.
Thank you for the warning. I'm aware of this and even with the recommended
upgrade path it is not easy or safe for complicated clusters like mine. I
have billions of small s3 objects, versions, indexes etc.
With each new Ceph release, the
maybe even directly.
Best regards,
Burkhard Linke
Please advise.
Thanks,
Gagan
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Hi and welcome to ceph,
On 23.06.25 22:37, Ryan Sleeth wrote:
I am setting up my first cluster of 9-nodes each with 8x 20T HDDs and 2x 2T
NVMes. I plan to partition the NVMes into 5x 300G so that one partition can
be used by cephfs_metadata (SSD only), while the other 4x partitions will
be paire
Hi,
On 12.06.25 21:58, Daniel Vogelbacher wrote:
Hi Eric,
On 6/12/25 17:33, Eric Le Lay wrote:
I use rsync to copy data (~10TB) to backup storage.
To speed things up I use the ceph.dir.rctime extended attribute to
instantly ignore sub-trees that haven't changed without iterating
through the
Hi,
On 4/11/25 18:33, Stephan Hohn wrote:
- cryptsetup version check isn't working at least in the container image of
v18.2.5 (
https://github.com/ceph/ceph/blob/reef/src/ceph-volume/ceph_volume/util/encryption.py)
which leads to encrypted osds not starting due to "'Error while checking
cryptset
on Debian 12, only public
network for all services.
I'll update the remaining services and afterwards run some tests on the
single machine for further investigations.
Best regards,
Burkhard Linke
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T
thing that may help?
Remapping PGs has a higher priority than scrubbing. So as long as the
current pool extension is not finished, only idle OSDs will scrub their
PGs. This is expected, and the cluster will take care for the missing
scrub runs after it is healthy again.
Best regards,
Burkhard
oth should
be extended at the same time or it not causing the expected result? If
it is the case, should I just reenter the command to extend pg_num and
pgp_num? (and wait for the resulting remapping!)
In current ceph release only pg_num can be changed. pgp_num is
automatically adopted.
by moving
The last time we want to perform a large scale pool change we had to
copy each file / directory to actually move the data.
Best regards,
Burkhard Linke
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reintegrate these strays e.g. by running a
recursive find on the filesystem or scrub it
(https://docs.ceph.com/en/latest/cephfs/scrub/). I would recommend to
upgrade before running any of these checks.
Best regards,
Burkhard Linke
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h information, or use 'ceph-dencoder' to
decode it (not sure about the exact parameters for this).
Best regards,
Burkhard Linke
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Hi,
your cephfs.cephfs01.data pool currently has 144 PGs. So this pool seems
to be resizing, e.g. from 128 PGs to 256 PGs. Do you use the autoscalar
or did you trigger a manual PG increment of the pool?
You can check this with the output of "ceph osd pool ls detail". It
shows the current an
Hi,
On 17.12.24 14:40, Janek Bevendorff wrote:
Hi all,
We moved our Ceph cluster to a new data centre about three months ago,
which completely changed its physical topology. I changed the CRUSH
map accordingly so that the CRUSH location matches the physical
location again and the cluster has
e same problem with our desktops a while ago, and decided to
switch to a NFS re-export of the CephFS filesystem. This has proven to
be much more reliable in case of hibernation. But as you already
mentioned NFS also has other problems...
Regards,
Burkhard Linke
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t it might be a good
starting point.
Best regards,
Burkhard Linke
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st as root only reports
very few open files (<50). So inotify seems to be responsible for the
massive caps build up. Terminating VSC results in a sharp drop of the
caps (just a few open files / directories left afterwards).
Is this a known problem?
Best regards,
Burkha
Hi,
the Debian bookworm packages for 18.2.4 are completely broken and unusable:
1. missing dependencies, e.g. python3-packaging:
root@cc-r3-ceph-2:~# ceph-volume lvm list
Traceback (most recent call last):
File "/usr/sbin/ceph-volume", line 33, in
sys.exit(load_entry_point('ceph-volume=
ement set, disable access to a bucket, move all
objects belonging to that bucket from one pool to the other
(identifiable via the bucket's marker), change the placement setting of
the bucket and reenable access. Unfortunately I've didn't found a good
method to temporarily disable bu
Hi,
On 5/21/24 13:39, Marcus wrote:
Thanks for your answers!
I read somewhere that a vpn would really have an impact on
performance, so it was not recommended, and I found v2 protocol.
But vpn feels like the solution and you have to accept the lower speed.
Also keep in mind that clients hav
Hi,
we have similar problems from time to time. Running Reef on servers and
latest ubuntu 20.04 hwe kernel on the clients.
There are probably two scenarios with slightly different observations:
1. MDS reports slow ops
Some client is holding caps for a certain file / directory and blocks
o
t you need to know your current and
future workloads to configure it accordingly. This is also true for any
other shared filesystem.
Best regards,
Burkhard Linke
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osd_fast_fail_on_connection_refused<https://docs.ceph.com/en/latest/rados/configuration/osd-config-ref/#confval-osd_fast_fail_on_connection_refused>=true
changes this behaviour.
Best regards,
Burkhard Linke
On 24.11.23 11:09, Janne Johansson wrote:
Den fre 24 nov. 2023 kl 10:25 skrev Frank Schilder:
Hi Den
Hi,
On 8/30/23 18:26, Yuri Weinstein wrote:
16.2.14 has not been released yet.
Please don't do any upgrades before we send an announcement email.
Then stop pushing packets before the announcement. This is not the first
time this problem occurred. And given your answer I'm afraid it won't be
removing large buckets, but I'm not sure how it actually works if you
only want to remove some objects.
Regards,
Burkhard Linke
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Hi,
at least eu.ceph.com and de.ceph.com are lacking packages for the
pacific release. All package not start with "c" (e.g. librbd, librados,
radosgw) are missing.
Best regards,
Burkhard Linke
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s block migration
within qemu itself. Proxmox is using this for storage migrations. Works
quite well within proxmox (btw thx for the great software), but I
haven't done it manually yet. YMMV.
Best regards,
Burkhard Linke
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Hi,
I would like to add a datapoint. I rebooted one of our client machines
into kernel 5.4.0-135-generic (latest ubuntu 20.04 non hwe kernel) and
performed the same test (copying a large file within cephfs).
Both the source and target files stay in cache completely:
# fincore bar
RES PA
Hi,
On 07.12.22 11:58, Stefan Kooman wrote:
On 5/13/22 09:38, Xiubo Li wrote:
On 5/12/22 12:06 AM, Stefan Kooman wrote:
Hi List,
We have quite a few linux kernel clients for CephFS. One of our
customers has been running mainline kernels (CentOS 7 elrepo) for
the past two years. They starte
Hi,
On 11/4/22 09:45, Adrian Nicolae wrote:
Hi,
We have a Pacific cluster (16.2.4) with 30 servers and 30 osds. We
started to increase the pg_num for the data bucket for more than a
month, I usually added 64 pgs in every step I didn't have any issue.
The cluster was healthy before increasing
gards,
Burkhard Linke
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orage, and according to
the timestamps have been scrubbed in the last days.
Is it possible to get a full list of all affected PGs? 'ceph health
detail' only displays 50 entries.
Best regards,
Burkhard Linke
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Hi Josh,
thx for the link. I'm not sure whether this is the root cause, since we
did not use the noscrub and nodeepscrub flags in the past. I've set them
for a short period to test whether removing the flag triggers more
backfilling. During that time no OSD were restarted etc.
But the tick
Hi,
On 9/12/22 11:44, Eugen Block wrote:
Hi,
I'm still not sure why increasing the interval doesn't help (maybe
there's some flag set to the PG or something), but you could just
increase osd_max_scrubs if your OSDs are not too busy. On one customer
cluster with high load during the day we c
rising from
600 to over 1000 during the weekend and continues to rise...
Best regards,
Burkhard Linke
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cluster network. It is extra effort both in setup, maintenance and
operating. Unless your network is the bottleneck you might want to use
this pending configuration change to switch to a single network setup.
Regards,
Burkhard Linke
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.
AFAIK the above settings are used by the fuse client. The kernel client
does not use ceph.conf at all and requires all information to be passed
as command line parameters to mount or as part of the fstab / autofs entry.
Regards,
Burkhard Linke
Hi,
On 08.07.22 11:34, Robert Reihs wrote:
Hi,
I am very new to the ceph world, and working on setting up a cluster. We
have two cephfs filesystems (slow and fast), everything is running and
showing um in the dashboard. I can mount on of the filesystems (it mounts
it as default). How can I speci
regards,
Burkhard Linke
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Hi,
On 10.06.22 10:23, Flemming Frandsen wrote:
Hmm, does that also create the mon, mgr and mds units?
The actual unit files for these services are located in
/lib/systemd/system, not /etc/systemd.
You need to recreate the _instances_ for the units, e.g. by running
systemctl enable ceph-
Hi,
On 5/17/22 08:51, Stolte, Felix wrote:
Hey guys,
i have three servers with 12x 12 TB Sata HDDs and 1x 3,4 TB NVME. I am thinking
of putting DB/WAL on the NVMe as well as an 5GB DM-Cache for each spinning
disk. Is anyone running something like this in a production environment?
We have s
Hi,
I just stumpled over some log messages regarding ceph-crash:
May 10 09:32:19 bigfoot60775 ceph-crash[2756]: WARNING:ceph-crash:post
/var/lib/ceph/crash/2022-05-10T07:10:55.837665Z_7f3b726e-0368-4149-8834-6cafd92fb13f
as client.admin failed: b'2022-05-10T09:32:19.099+0200 7f911ad92700 -1
Hi,
On 3/31/22 08:44, Szabo, Istvan (Agoda) wrote:
Hi,
I have some critical data in couple of buckets I'd like to keep it somehow
safe, but I don't see any kind of snapshot solution in ceph for objectgateway.
How you guys (if you do) backup RGW buckets or objects what is the best way to
keep
Hi,
On 22.03.22 16:23, Robert Vasek wrote:
Hello,
I have a question about cephfs subvolume paths. The path to a subvol seems
to be in the format of //, e.g.:
/volumes/csi/csi-vol-59c3cb5a-a9ee-11ec-b412-0242ac110004/b2b5a0b3-e02b-4f93-a3f5-fdcef80ebbea
I'm wondering about the segment. Where
Hi,
I've found a solution for getting rid of the stale pg_temp. I've scaled
the pool up to 128 PGs (thus "covering" the pg_temp). Afterwards the
remapped PG was gone. I'm currently scaling down back to 32, no extra PG
(either regular or temp) so far.
The pool is almost empty, so playing ar
Hi,
On 2/2/22 14:39, Konstantin Shalygin wrote:
Hi,
The cluster is Nautilus 14.2.22
For a long time we have bogus 1 remapped PG, without actual 'remapped' PG's
# ceph pg dump pgs_brief | awk '{print $2}' | grep active | sort | uniq -c
dumped pgs_brief
15402 active+clean
6 active+cle
an restrict the access scope to sub directories etc.
See https://docs.ceph.com/en/pacific/cephfs/client-auth/ (or the pages
for your current release).
We use the CSI cephfs plugin in our main k8s cluster, and it is working
fine with those keys.
Regards,
e case? Or is mounting cephfs on the OSD hosts (kernel implementation)
considered safe now?
Best regards and happy holidays,
Burkhard Linke
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Hi,
On 11/26/21 12:47 PM, Christoph Adomeit wrote:
Hi,
I am just wondering if it is recommended to regularly fstrim or discard ceph
bluestore osds on flash memory
(ssds and nvmes) and how it is done and configured ?
fstrim and discard are filesystem level operations, since a filesystem
ha
Hi,
On 28.10.21 18:10, Konstantin Shalygin wrote:
Hi,
Try to use profile cap, like 'allow profile rbd'
That's fine for csi rbd, thx. Works like a charm so far.
But cephfs is a little different beast. As far as I understand the
source code, it uses the mgr interface to create subvolumes an
Hi,
I'm currently setting up ceph CSI for our kubernetes cluster. What are
the minimum requirements / capabilities needed for the rbd and cephfs
users? The current setup is working well with admin privileges, but I
would like to reduce it to the necessary minimum.
Regards,
Burkhard
_
Hi,
On 9/23/21 9:49 AM, Mark Schouten wrote:
Hi,
Last night we’ve had downtime on a simple three-node cluster. Here’s
what happened:
2021-09-23 00:18:48.331528 mon.node01 (mon.0) 834384 : cluster [WRN]
message from mon.2 was stamped 8.401927s in the future, clocks not
synchronized
2021-09-23 00
Hi,
On 30.08.21 15:36, Oliver Weinmann wrote:
Hi,
we had one failed osd in our cluster that we have replaced. Since then
the cluster is behaving very strange and some ceph commands like ceph
crash or ceph orch are stuck.
Just two unrelated thoughts:
- never use two mons. If one of them
Hi,
we are running RGW behind haproxy for TLS termination and load
balancing. Due to some major changes in our setup, we would like to
start a smooth transition to a new hostname of the S3 endpoint. The
haproxy part should be straightforward (adding a second frontend).
But on the RGW side
Hi,
On 7/21/21 8:30 PM, Konstantin Shalygin wrote:
Hi,
On 21 Jul 2021, at 10:53, Burkhard Linke
<mailto:burkhard.li...@computational.bio.uni-giessen.de>> wrote:
One client with special needs is openstack cinder. The database
entries contain the mon list for volumes
Another que
Hi,
On 7/21/21 9:40 AM, mabi wrote:
Hello,
I need to relocate an Octopus (15.2.13) ceph cluster of 8 nodes to another
internal network. This means that the IP address of each nodes as well as the
domain name will change. The hostname itself will stay the same.
What would be the best steps in
Hi,
just an addition:
currentl CEPH releases also include disk monitoring (e.g. SMART and
other health related features). These do not work with raid devices. You
will need external monitoring for your OSD disks.
Regards,
Burkhard
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Hi,
On 22.06.21 11:55, Thomas Roth wrote:
Hi all,
newbie question:
The documentation seems to suggest that with ceph-volume, one OSD is
created for each HDD (cf. 4-HDD-example in
https://docs.ceph.com/en/latest/rados/configuration/bluestore-config-ref/)
This seems odd: what if a server has
Hi,
On 15.06.21 16:15, Christoph Brüning wrote:
Hi,
That's right!
We're currently evaluating a similar setup with two identical HW nodes
(on two different sites), with OSD, MON and MDS each, and both nodes
have CephFS mounted.
The goal is to build a minimal self-contained shared filesystem
Hi,
CephFS clients are blacklisted if they do not react to heartbeat
packets. The MDS will deny the reconnect:
[ 1815.029831] ceph: mds0 closed our session
[ 1815.029833] ceph: mds0 reconnect start
[ 1815.052219] ceph: mds0 reconnect denied
[ 1815.052229] ceph: dropping dirty Fw state for
Hi,
during an OS upgrade from Ubuntu 18.04 to 20.04 we seem to have
triggered a bcache bug on three OSD hosts. These hosts are used with a
6+2 EC pool used with CephFS, so a number of PGs are affected by the
bug. We were able to restart two of the three hosts (and will run some
extra scrubs
Hi,
On 05.05.21 11:07, Andres Rojas Guerrero wrote:
Sorry, I have not understood the problem well, the problem I see is that
once the OSD fails, the cluster recovers but the MDS remains faulty:
*snipsnap*
pgs: 1.562% pgs not active
16128 active+clean
238
Hi,
On 4/6/21 2:20 PM, Olivier AUDRY wrote:
hello
now backup is running since 3hours and cephfs metadata goes from 20G to
479Go...
POOL
ID STORED OBJECTS USED %USED MAX AVAIL
cephfs-metadata12 479 GiB 642.26k1.4 TiB
18.79 2.0 TiB
cephfs-data0
Hi,
On 30.03.21 13:05, Rainer Krienke wrote:
Hello,
yes your assumptions are correct pxa-rbd ist the metadata pool for
pxa-ec which uses a erasure coding 4+2 profile.
In the last hours ceph repaired most of the damage. One inactive PG
remained and in ceph health detail then told me:
-
Hi,
On 3/17/21 11:28 AM, Andrew Walker-Brown wrote:
Hi Magnus,
Thanks for the reply. Just to be certain (I’m having a slow day today), it’s
the amount of data stored by the clients. As an example. a pool using 3
replicas and a quota 3TB : clients would be able to create up to 3TB of data
a
Hi,
On 16.03.21 03:40, Dave Hall wrote:
Andrew,
I agree that the choice of hash function is important for LACP. My
thinking has always been to stay down in layers 2 and 3. With enough
hosts it seems likely that traffic would be split close to evenly.
Heads or tails - 50% of the time you're
Hi,
your whole OSD deployment is wrong. CEPH does not use any filesystem
anymore for at least two major releases, and the existing filestore
backend is deprecated. Dunno where you got those steps from...
Just use ceph-volume, and preferable the lvm based deployment. If you
really want to u
Hi,
On 2/3/21 9:41 AM, Loïc Dachary wrote:
Just my 2 cents:
You could use the first byte of the SHA sum to identify the image, e.g. using a
fixed number of 256 images. Or some flexible approach similar to the way
filestore used to store rados objects.
A friend suggested the same to save spac
Hi,
On 2/2/21 9:32 PM, Loïc Dachary wrote:
Hi Greg,
On 02/02/2021 20:34, Gregory Farnum wrote:
*snipsnap*
Right. Dan's comment gave me pause: it does not seem to be
a good idea to assume a RBD image of an infinite size. A friend who read this
thread suggested a sensible approach (which als
Hi,
On 28.01.21 13:21, Szabo, Istvan (Agoda) wrote:
I mean the image hasn’t been deleted, but the content from the image.
RBD is (as the name implies) is a block device layer. Block devices do
not have a concept of content, file, directories or even allocated or
unallocated space. They are
Hi,
On 1/18/21 5:46 PM, Dietmar Rieder wrote:
Hi all,
we noticed a massive drop in requests per second a cephfs client is
able to perform when we do a recursive chown over a directory with
millions of files. As soon as we see about 170k caps on the MDS, the
client performance drops from abou
Hi,
On 1/4/21 5:27 PM, Paul Mezzanini wrote:
Hey everyone,
I've got an EC pool as part of our cephfs for colder data. When we started using it,
compression was still marked experimental. Since then it has become stable so I turned
compression on to "aggressive". Using 'ceph df detail' I ca
Hi,
On 11/26/20 12:45 PM, Richard Thornton wrote:
Hi,
Sorry to bother you all.
It’s a home server setup.
Three nodes (ODROID-H2+ with 32GB RAM and dual 2.5Gbit NICs), two 14TB
7200rpm SATA drives and an Optane 118GB NVMe in each node (OS boots from
eMMC).
*snipsnap*
Is there a rough Ceph
Hi,
On 10/23/20 2:22 PM, Gerhard W. Recher wrote:
This is a proxmox cluster ...
sorry for formating problems of my post :(
short plot, we messed with ip addr. change of public network, so
monitors went down.
*snipsnap*
so howto recover from this disaster ?
# ceph -s
cluster:
id:
Hi,
your mail is formatted in a way that makes it impossible to get all
information, so a number of questions first:
- are the mons up, or are the mon up and in a quorum? you cannot change
mon IP addresses without also adjusting them in the mon map. use the
daemon socket on the systems to
Hi,
non round robin entries with multiple mon host FQDNs are also broken.
Regards,
Burkhard
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Hi,
On 10/21/20 10:01 PM, Mac Wynkoop wrote:
*snipsnap*
*up: 0: 1131: 1382: 303: 1324: 1055: 576: 1067: 1408: 161acting: 0: 721:
1502: 21474836473: 21474836474: 245: 486: 327: 1578: 103*
21474836473 is -1 as unsigned integer. This value means that the CRUSH
algorithm did not produce enough
Hi,
in our setup (ceph 15.2.4, openstack train) the swift endpoint URLs are
different, e.g.
# openstack endpoint list --service swift
+--+---+--+--+-+---+--+
| I
Hi,
On 10/12/20 12:05 PM, Kristof Coucke wrote:
Diving into the different logging and searching for answers, I came across
the following:
PG_DEGRADED Degraded data redundancy: 2101057/10339536570 objects degraded
(0.020%), 3 pgs degraded, 3 pgs undersized
pg 1.4b is stuck undersized for 63
Hi,
On 10/12/20 2:31 AM, Seena Fallah wrote:
Hi all,
Does anyone has any production cluster with ubuntu 20 (focal) or any
suggestion or any bugs that prevents to deploy Ceph octopus on Ubuntu 20?
We are running our new ceph cluster on Ubuntu 20.04 and ceph octopus
release. Packages are take
Hi,
in addition you need a way to recover the mon maps (I assume the mon was
on the same host). If the mon data is lost, you can try to retrieve some
of the maps from the existing OSDs. See the documentation about desaster
recovery in the ceph documentation.
If you cannot restore the mons,
Hi,
On 7/2/20 7:25 AM, Lindsay Mathieson wrote:
Is there a way to display an OSD's setup - data, data.db and WAL
disks/partitions?
If you use ceph-volume, the corresponding 'list' command on the host
will print details of OSDs:
# ceph-volume lvm list
== osd.1 ===
[block]
/dev
Hi,
On 7/1/20 1:57 PM, Andrei Mikhailovsky wrote:
Hello,
We are planning to perform a small upgrade to our cluster and slowly start
adding 12TB SATA HDD drives. We need to accommodate for additional SSD WAL/DB
requirements as well. Currently we are considering the following:
HDD Drives - Sea
use them for "small" machines, so I dunno whether yuo can get
them for higher loads.
Regards,
Burkhard
--
Dr. rer. nat. Burkhard Linke
Bioinformatics and Systems Biology
Justus-Liebig-University Giessen
35392 Giessen, Germany
Phone: (+49) (0)6
. nat. Burkhard Linke
Bioinformatics and Systems Biology
Justus-Liebig-University Giessen
35392 Giessen, Germany
Phone: (+49) (0)641 9935810
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Hi,
On 10/17/19 5:56 AM, Ashley Merrick wrote:
I think your better off doing the DD method, you can export and import
a PG at a time (ceph-objectstore-tool)
But if the disk is failing a DD is probably your best method.
In case of hardware problems or broken sectors, I would recommend
'dd_
Hi,
On 9/27/19 10:54 AM, Eugen Block wrote:
Update: I expanded all rocksDB devices, but the warnings still appear:
BLUEFS_SPILLOVER BlueFS spillover detected on 10 OSD(s)
osd.0 spilled over 2.5 GiB metadata from 'db' device (2.4 GiB
used of 30 GiB) to slow device
osd.19 spilled over
Hi,
you need to fix the non active PGs first. They are also probably the
reason for the blocked requests.
Regards,
Burkhard
On 9/24/19 1:30 PM, Thomas wrote:
Hi,
ceph health reports
1 MDSs report slow metadata IOs
1 MDSs report slow requests
This is the complete output of ceph -s:
root@
but this might lead to other problems (too large
rados omap objects).
Regards,
Burkhard
--
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Bioinformatics and Systems Biology
Justus-Liebig-University Giessen
35392 Giessen, Germany
Phone: (+49) (0)641 9935810
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Hi,
On 9/9/19 5:55 PM, Robert Sander wrote:
Hi,
On 09.09.19 17:39, Burkhard Linke wrote:
# ceph-volume lvm create --bluestore --data /dev/sda --block.db
/dev/ceph-block-dbs-ea684aa8-544e-4c4a-8664-6cb50b3116b8/osd-block-db-a8f1489a-d97b-479e-b9a7-30fc9fa99cb5
When using an LV on a VG omit
Hi,
we had a failing hard disk, and I replace it and want to create a new
OSD on it now.
But ceph-volume fails under these circumstances. In the original setup,
the OSDs were created with ceph-volume lvm batch using a bunch of drives
and a NVMe device for bluestore db. The batch mode uses
Hi,
which protocol do you intend to use? Swift and S3 behave completely
different with respect to users and keystone based authentication.
Regards,
Burkhard
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Hi,
ceph uses a pseudo random distribution within crush to select the target
hosts. As a result, the algorithm might not be able to select three
different hosts out of three hosts in the configured number of tries.
The affected PGs will be shown as undersized and only list two OSDs
instead o
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