[ceph-users] rados -p pool_name ls shows deleted object when there is a snapshot

Dear all, I am experimenting with ceph pacific, and I have noticed that if I remove an object from a pool that has a snapshot, the `rados -p poolname ls` command will keep showing the object. ``` root@node1:~# rados -p testpool ls first root@node1:~# rados -p testpool mksnap snap1 created pool

[ceph-users] Edit crush rule

Dear all, is there a way to change the failure domain of a CRUSH rule using the CLI? I know I can do that by editing the crush map. I'm curious if there is a "CLI way"? Thank you, Laszlo ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscrib

[ceph-users] Re: Edit crush rule

ew_rule_name} > Very easy. > This may kick off some backfill so I'd suggest setting norebalance > before doing this. > > Rich > > On Wed, 8 Sept 2021 at 07:51, Nathan Fish wrote: >> I believe you would create a new rule and switch? >> >> On Tue, Sep 7,

[ceph-users] rbd info flags

Hello all! what is the flags showing in the rbd info output? where can I read more about it? Thank you, Laszlo ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io

[ceph-users] Ceph quincy cephadm orch daemon stop osd.X not working

Dear All, I'm testing ceph quincy and I have problems using the cephadm ochestrator backend. When I'm trying to use it to start/stop osd daemons nothing happens. I have a "brand new" cluster deployed with cephadm. So far everything else that I tried worked just like in Pacific, but the ceph or

[ceph-users] same OSD in multiple CRUSH hierarchies

Hi there, I'm curious if there is anything against configuring an ODS to be part in multiple CRUSH hierarchies. I'm thinking of the following scenario: I want to create pools that are using distinct sets of OSDs. I want to make sure that a piece data which replicated at application level will

[ceph-users] ceph blocklist

Hello everyone, can someone explain, or direct me to some documentation that explains the role of the blocklists (former blacklist). What do they useful for? how do they work? Thank you, Laszlo ___ ceph-users mailing list -- ceph-users@ceph.io To uns

[ceph-users] Re: same OSD in multiple CRUSH hierarchies

as across the available hosts (given your failure domain would be "host"), which is already the default for the replicated_rule. Did I misunderstand something? Regards, Eugen Zitat von Budai Laszlo: Hi there, I'm curious if there is anything against configuring an ODS to be

[ceph-users] Error adding OSD

Hi all, I am trying to add an OSD using cephadm but it fails with the message found below. Do you have any ide what may be wrong? The given device used to be in the cluster but it has been removed, and now the device appears as available in the `ceph orch device ls`. Thank you, Laszlo root@m

[ceph-users] OSD not starting after being mounted with ceph-objectstore-tool --op fuse

Hello, I have a problem with an OSD not starting after being mounted offline using the ceph-objectstore-tool --op fuse command. The cephadm orch ps now shows me the osd in error state: osd.0   storage1   error 2m ago   5h    -    4096M  If I'm checkung

[ceph-users] Ceph multitenancy

Dear all, is it possible to use standalone ceph for provisioning storage resources for multiple tenants in a "Self service" way? (users log in to the dashboard, and they can manage their own resources). Any documentation link or other reference is highly appreciated. Thank you, Laszlo ___

[ceph-users] Re: Ceph multitenancy

ivileges, and afaik there's no way in the mgr API to downgrade privileges. * Additionally, the Dashboard authentication is password-based, while cephx is key-based. Kind Regards, Ernesto On Tue, Mar 22, 2022 at 3:41 PM Budai Laszlo wrote: Dear all, is it possible to use

[ceph-users] ceph namespace access control

Hello all, what capabilities a ceph user should have in order to be able to create rbd images in one namespace only? I have tried the following: [root@ceph1 ~]# rbd namespace ls --format=json [{"name":"user1"},{"name":"user2"}] [root@ceph1 ~]# ceph auth get-or-create client.user2 mon 'profile

[ceph-users] RBD exclusive lock

Hello all! I am facing the following issue with ceph RBD: I can pap the image on multiple hosts. After I map on the first host I can see its lock on the image. After that I was expecting the map to fail on the second node, but actually it didn't. The second node was able to map the image and

[ceph-users] Re: RBD exclusive lock

n. Kind regards, Laszlo On 3/23/22 23:18, Budai Laszlo wrote: Hello all! I am facing the following issue with ceph RBD: I can pap the image on multiple hosts. After I map on the first host I can see its lock on the image. After that I was expecting the map to fail on the second node, but a

[ceph-users] RBD Exclusive lock to shared lock

Hi all, is there any possibility to turn an exclusive lock into a shared one? for instance if I map a device with "rbd map testimg --exclusive" then is there any way to switch that lock to a shared one so I can map the rbd image on an other node as well? How can we see whether a lock is exclu

[ceph-users] Re: RBD Exclusive lock to shared lock

Hi Ilya, Thank you for your answer! On 3/24/22 14:09, Ilya Dryomov wrote: How can we see whether a lock is exclusive or shared? the rbd lock ls command output looks identical for the two cases. You can't. The way --exclusive is implemented is the client simply refuses to release the lock w

[ceph-users] Create iscsi targets from CLI

Hello everybody, Is there a way to create the scsi targets from the command line with the ceph command? (Or a series of commands that can be put in a script.) I have reviewed the "ceph -h" but I guess I'm missing something. Thank you, Laszlo ___ ceph

[ceph-users] client - monitor communication.

Hello everybody, I'm trying to figure out how often the ceph client is contacting the monitors for updating its own information about the cluster map. Can anyone point me to a document describing this client <-> monitor communication? Thank you, Laszlo _

[ceph-users] Re: client - monitor communication.

nt get the knowledge about a change in the cluster? Thank you, Laszlo On 7/15/20 7:57 AM, Nghia Viet Tran wrote: > Hi Laszlo, > > Which client are you talking about? > > On 7/15/20, 11:54, "Budai Laszlo" wrote: > > Hello everybody, > > I'

[ceph-users] Re: client - monitor communication.

? Thank you, Laszlo On 7/15/20 8:12 AM, Budai Laszlo wrote: > Hi Nghia, > > in the docs (https://docs.ceph.com/docs/master/architecture/#about-pools) > there is the statement "Ceph Clients retrieve a Cluster Map from a Ceph > Monitor, and write objects to pools." My

[ceph-users] Re: client - monitor communication.

oses). Once you have understood CRUSH, I am > quite sure that will answer many of your questions. > > And feel free to ask about CRUSH. I would be glad to answer. > > BR > > >   > > > On Wed, Jul 15, 2020 at 8:54 AM Budai Laszlo <mailto:laszlo.bu...@gmail.c

[ceph-users] activating cache tier while rbd is in use

Hello all, is it allowed to configure and activate a cache tier for a pool that contains used RBD images? The documentation (https://docs.ceph.com/docs/mimic/rados/operations/cache-tiering/) doesn't say anything about this, but we have experienced errors with our VMS consuming ceph rbd volumes

[ceph-users] cache tier dirty status

Hello all, is there a way to interrogate a cache tier pool about the number of dirty objects/bytes that it contains? Thank you, Laszlo ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io

[ceph-users] unbalanced pg/osd allocation

Dear all, We have a ceph cluster where we are have configured two SSD only pools in order to use them as cache tier for the spinning discs. Altogether there are 27 SSDs organized on 9 hosts distributed in 3 chassis. The hierarchy looks like this: $ ceph osd df tree | grep -E 'ssd|ID' ID CLASS

[ceph-users] Re: unbalanced pg/osd allocation

/rados/operations/control/ > > > or use the balancer module in newer releases *iff* all clients are new enough > to handle pg-upmap > > https://docs.ceph.com/docs/nautilus/rados/operations/balancer/ > > > > > > >> On Jul 30, 2020, at 9:21 AM, Buda