#ceph IRC Log

Index

IRC Log for 2014-02-25

Timestamps are in GMT/BST.

[0:01] <bdonnahue2> i think i need to yum install btrfs-progs on the OSDs
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[0:15] <bdonnahue2> that did the trick
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[0:16] <bdonnahue2> ceph-deploy admin is now giving me trouble
[0:17] <bdonnahue2> an error is thrown while write cluster configuration to /etc/ceph/{cluster}.conf
[0:17] <bdonnahue2> the dir didnt exist on the admin so i created it
[0:18] <bdonnahue2> http://pastebin.com/GErVuPqF
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[0:55] <bdonnahue2> what ports does ceph operate on
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[0:57] <dmick> TCP 6789 and following, for the most part
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[1:24] <bens> dmick: i like big ports and i cannot lie. you other brothers can't deny. When i start my service, the highert that a port is, the more data that I get by.
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[2:36] <cjh973> i was reading through the radosgw code. Am i correct in guessing that curl is used to post data back to the client?
[2:39] <dmick> cjh973: if by 'client' you mean 's3/swift client', not really; radosgw runs under Apache
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[2:42] <cjh973> dmick: i see
[2:42] <cjh973> what is the civetweb/mongoose server used for?
[2:42] <cjh973> was that old code just for testing?
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[2:47] <sage> cjh973: the civetweb frontend is new. it let's radosgw run standalone without requiring apache+fastcgi
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[2:52] <cjh973> sage: awesome
[2:53] <cjh973> ok i'll keep looking
[2:54] <cjh973> sage: i wish civetweb had some more docs. i've been having a hard time figuring out how to work with it
[2:54] <cjh973> although to be fair i started learning c++ a few weeks ago :)
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[2:59] <dmick> it's a fork of mongoose, so perhaps the mongoose docs will be more useful
[3:00] <dmick> I don't know.
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[3:04] <cjh973> dmick: ok i'll check those out as well. i do see the mg_do_stuff() type functions so I see what you mean
[3:04] <cjh973> i was wondering what the mg stood for
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[8:01] <jerker> alfredodeza: The ceph http://ceph.com/rpm-emperor/el6/noarch/ceph-release-1-0.el6.noarch.rpm
[8:01] <jerker> relase package does seem to contain paths to ceph-testing not ceph emperor if I understand correctly
[8:04] <jerker> Also here, why is manually creating the ceph.repo and manually editing it an option? looks strange. http://ceph.com/docs/master/start/quick-start-preflight/#red-hat-package-manager-rpm
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[8:06] <jerker> Should not ceph-release package be used instead?
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[8:08] <jerker> I am aware that there are other ways of installing ceph (been running it on and off a few times) and it is very much improved, it just that i like the standard add-a-repo-package and then install-the-packages way of doing it instead of manually creating config files
[8:11] <jerker> This sentence is slightly strange, is it not? "Do not call ceph-deploy with sudo or run it as root if you are logged in as a different user, because it will not issue sudo commands needed on the remote host." The idea is that you should run as root, not use sudo, is it not?
[8:11] <jerker> At this page: http://ceph.com/docs/master/start/quick-start-preflight/#red-hat-package-manager-rpm
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[8:13] <aarontc> jerker: I agree, the wording is a bit strange. I think it's technically correct... maybe more obvious id it said "... with sudo or run it as root if you are logged in as [a user other than root on your administration machine]..."
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[8:20] <jerker> aarontc: I usually use "sudo su - " just to get the environment correct and then do whatever it is that I need to do, but should there not be a one-liner that both use sudo and launch the command with correct environment?
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[8:22] <jerker> Why is both "el6" and "rhel6" used? What is the difference? http://ceph.com/rpm-emperor/
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[8:36] <srenatus> does anyone know the current status of http://www.spinics.net/lists/ceph-devel/msg14981.html ? I'm interested in the "Soon there will be a librados interface for issuing commands like
[8:36] <srenatus> ceph pg dump and getting the response" part
[8:36] <jerker> I cannot reproduce the problem with the testing-path instead of the emperor path in the ceph-release package so I guess it must be my fault. Wonder how I managed to do that though.
[8:36] <srenatus> (actually, issuing the commands seems a little weird (API design wise), but I'm interested in the information)
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[8:52] <jerker> http://ceph.com/docs/master/rados/deployment/preflight-checklist/ The instructions on how to add to /etc/sudoers.d/ceph may be correct but is not the text that should be added but how to do it.
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[8:55] <jerker> Is there any reaseon to run the "chmod 0440 /etc/sudoers.d/ceph" command at all? Can it not just be removed?
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[9:04] <jerker> That there should be security reasons not to allow root ssh but allow the ceph user and then not ask for password when doing sudo is ridiculous.. if one is kind it is security by obscurity
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[10:02] <srenatus> PGs are per-pool, right? given a pgid, can I figure out the pool it belongs to?
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[10:15] <andreask> a pg with the name "3.1f" belongs to the pool with the id 3
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[10:51] <srenatus> andreask: thanks a lot. oh dear that wasn't that hard.
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[11:15] <orion195> hi guys
[11:15] <orion195> anyone around for some question on: ceph integrated with Openstack?
[11:15] <srenatus> orion195: just ask :)
[11:16] <orion195> srenatus: thank you :)
[11:16] <orion195> basically I followed the guide on http://ceph.com/docs/master/rbd/rbd-openstack/
[11:16] <orion195> I keep having instances created on the local fs
[11:17] <orion195> I can only create images on glance (with rbd backend) and cinder volumes on ceph
[11:17] <orion195> but... everything is happening always on the local fs
[11:17] <orion195> in particular in: /var/lib/nova ..
[11:17] <orion195> I'm running openstack havana, just updated to the latest version from RDO
[11:18] <orion195> what most make me think somethng is not correct is the output of: virsh secret-list
[11:18] <orion195> c4d2b38c-4795-41ec-84a0-24d5eb95eec2 Unused
[11:19] <orion195> does anyone have any idea?
[11:19] <orion195> (to me it seems that nova is not integrated with ceph)
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[11:27] <orion195> ping * ?
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[11:30] <andreask> up-to libvirt 1.1.1 (IIRC) virsh secret-list has a bug and does always show "unused" for rbd and iscsi
[11:32] <orion195> srenatus: I suspect nobody know nothing about ceph and openstack here
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[11:33] <orion195> andreask: does it mean that it bugged only for that but it is working, or it bugget showing this message and it does not work?
[11:34] <andreask> it works, only the output is buggy
[11:34] <orion195> andreask: ok, but...
[11:34] <orion195> do you have any ideas why openstack keep creating instances on local fs and not on ceph?
[11:35] <andreask> e.g. if you don't restart all the affected services after changing the confi
[11:35] <andreask> g
[11:36] <orion195> I did
[11:36] <orion195> at least 20 times
[11:37] <orion195> in nova.conf I have this: #libvirt_images_type=rbd
[11:37] <orion195> is this something that needs to be commented out? (if I do. it does not work at all)
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[11:38] <andreask> ....
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[11:41] <orion195> andreask: http://fpaste.org/80136/
[11:41] <orion195> this is what I have in compute.log if I boot a machine
[11:42] <orion195> with libvirt_images_type=rbd
[11:42] <orion195> to me, it does not know where to look for the pools
[11:42] <orion195> so...is something that I've to setup in openstack* ?
[11:42] <orion195> I remember something like: CEPH_ARGS in a python file... but not sure about it
[11:43] <andreask> the ceph.conf file is available on every compute node and the cinder user has the right to read it?
[11:44] <andreask> ... as well as reading the keyfile?
[11:45] <orion195> yes
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[11:45] <orion195> 1 compute node
[11:45] <orion195> connected to ceph
[11:47] <orion195> andreask: http://ur1.ca/gp1pz
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[11:49] <orion195> andreask: any idea?
[11:49] <srenatus> orion195: three different things here: glance is ONLY storing image files; libvirt_images_type is the local disk storage of a VM; cinder is block-storage == volumes
[11:50] <srenatus> orion195: each of these three things are totally independent
[11:50] <srenatus> you can use any of these without the others
[11:50] <srenatus> so...what are you trying to do?
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[11:51] <orion195> srenatus: I would like to use ceph as backend in openstack
[11:51] <srenatus> I gather you've gotten a) glance and c) cinder to work but want b), ephemermal disks on rbd, now?
[11:51] <orion195> to store everything there
[11:51] <orion195> yes
[11:51] <orion195> exactly
[11:51] <orion195> ephemeral disks on rbd
[11:51] <srenatus> *ephemeral
[11:52] <orion195> srenatus: you're right
[11:52] <orion195> is this something that can work or it doesn't?
[11:52] <srenatus> libvirt_images_type has to be set to rbd, the stuff nova is doing is in virt/libvirt/{utils,drivers}.py
[11:53] <srenatus> if I remember correctly, there's no way to specify a user to be used for that yet (in stable/havana), so that has to be fixed in ceph.conf if you don't want to use admin
[11:53] <srenatus> It has implications, but it should work
[11:53] <andreask> there are patched havana packages available IIRC
[11:54] <srenatus> I don't really see the point of ephemeral storage on RBD though
[11:55] <andreask> or is it about bootable volumes in cinder?
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[11:56] <srenatus> andreask: I think it's about this: https://github.com/openstack/nova/blob/master/etc/nova/nova.conf.sample#L2901-L2910
[11:57] <srenatus> i.e. virsh's libvirt.xml definitions actually pointing to RBD even for non-block-storage disks, i.e. ephemeral ones
[12:00] <andreask> yeah .... orion195 ... this might interest you: http://goo.gl/Jzc5Lm
[12:02] <orion195> srenatus: I think that using ethemeral storage on RBD makes sense because, I should have a lot of space on local fs
[12:02] <orion195> I have TBs on ceph to be used only or this
[12:03] <andreask> makes sense, yes
[12:05] <orion195> andreask: so what's story at the end? The this creation fails because by default nova wants to use admin as user, but I have another user setup?
[12:06] <srenatus> orion195: you can specify the ceph.conf to be used; can't the file (say 'nova_ceph.conf') specify the user and keyring to be used?
[12:06] <srenatus> i.e. plain ceph-wise?
[12:07] <orion195> this is what I have in my nova.conf
[12:07] <orion195> grep -R rbd_ /etc/nova/nova.conf libvirt_images_rbd_pool=volumes libvirt_images_rbd_ceph_conf=/etc/ceph/ceph.conf rbd_user=cinder # the libvirt uuid of the secret for the rbd_uservolumes rbd_secret_uuid=c4d2b38c-4795-41ec-84a0-24d5eb95eec2
[12:09] <srenatus> orion195: https://github.com/openstack/nova/search?q=rbd_secret_uuid&ref=cmdform << suggests that the same user would have to be used for cinder and imagebackend, but that's what you do...
[12:10] <srenatus> btw that there are files in /var/lib/nova/instances/VM_ID is not a problem, there will always be files there, just the disk shouldn;t be there
[12:13] <orion195> srenatus: I didn't understand what I should change then :(
[12:13] <orion195> or if my setup is wrong or I don't know
[12:14] <srenatus> you can't spawn VMs, right?
[12:14] <srenatus> try to nova.conf use debug=True and libvirtd.xml log_level=1
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[12:38] <orion195> srenatus: it does not even work if I add the admin keyring
[12:38] <orion195> to the ceph conf
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[12:39] <srenatus> orion195: tried debugging? (see above, nova.conf; libvirtd.conf)
[12:41] <orion195> srenatus: trying now
[12:43] <orion195> this from scheduler.log
[12:43] <orion195> libvirt_info() takes exactly 6 arguments (7 given)\n']
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[12:49] <orion195> srenatus: http://ur1.ca/gp245
[12:52] <orion195> srenatus: in the libvirtd.log I don't have any ERROR
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[12:55] <srenatus> orion195: TypeError: libvirt_info() takes exactly 6 arguments (7 given)
[12:56] <srenatus> orion195: https://bugs.launchpad.net/nova/+bug/1233188
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[12:58] <orion195> srenatus: have the same version
[12:58] <orion195> I alreadyhave the fix that is proposed there
[12:59] <orion195> extra_specs, hypervisor_version):
[12:59] <orion195> It doesn't work
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[12:59] <srenatus> the error shouldn't persist though...
[12:59] <srenatus> (sorry, lunch.)
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[13:07] <orion195> srenatus: enjoy
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[13:30] <joshuay04> Question, how many hosts should I have to be able to hit 2000op/s at a good speed? thanks
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[14:09] <srenatus> orion195: any progress with the debugging?
[14:10] <orion195> srenatus: well, I applied the patch
[14:10] <orion195> but now I'm hitting this: 'libvirtError: internal error Cannot find suitable CPU model for given data\n']
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[14:13] <orion195> srenatus: cool
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[14:14] <orion195> srenatus: it's solved, I had to remove from /etc/nova/nova.conf: #libvirt_type=kvm
[14:31] <srenatus> hmm ok. just verify that it's still using kvm
[14:32] <orion195> how can I do it?
[14:32] <srenatus> (not that it had ever happened here that someone forgot to check that and VMs were terrrrribly slow and everything)
[14:32] <srenatus> you'll notice if your VM boots in < 5 minutes
[14:32] <srenatus> ;)
[14:32] <srenatus> just check the ps output for kvm
[14:33] <orion195> yes
[14:33] <orion195> it boots in <1 minute
[14:33] <orion195> :D
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[15:11] <srenatus> orion195: so it boots now? and libvirt_images_type=rbd works, too?
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[16:19] <orion195> srenatus: yes
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[16:20] <orion195> I do see now the ehpemeral disks created on the rbd volumes
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[16:41] <fghaas> orion195: I'm late to this discussion, but "ephemeral disk" and "rbd volume" can't really apply to the same disk
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[16:43] <orion195> fghaas: I agree, I just wanted not to have the ephemeral disk on the local fs
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[16:45] <pll> http://tracker.ceph.com/account/register is not working, how can I report a bug?
[16:45] <pll> I would just like to let you guys know that ceph-disk activate seems to always return zero exit status, even if it has failed
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[16:50] <fghaas> orion195: I get that, however why not boot from volume?
[16:51] <orion195> right
[16:51] <orion195> fghaas: I'll do that of course
[16:51] <orion195> as I need to demo this... I didn't want to have the problem of running out of space
[16:51] <orion195> so the user first, they will create the VM's on the ephemeral disk (ceph backend)
[16:52] <orion195> after, they will use volumes to boot from :)
[16:52] <orion195> does it make sense?
[16:52] <orion195> fghaas: I would also like to understand why I cannot create a snapshot of a running instance
[16:52] <orion195> fghaas: do you have any thoughts?
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[16:53] <fghaas> no that does not make sense, actually :)
[16:54] <fghaas> create an rbd volume and boot from that -- it's all thin provisioned and whatnot be default, this'll be the most space efficient way to handle this
[16:54] <fghaas> s/be/by/
[16:54] <kraken> fghaas meant to say: create an rbd volume and boot from that -- it's all thin provisioned and whatnot by default, this'll by the most space efficient way to handle this
[16:56] <janos> haha kraken comes across as a passive-agressive bot
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[17:02] <jwillem> don't know if i'm on the right place: ceph0.77 centos 6.5 radosgw -> have a bit of problems
[17:03] <jwillem> i can create user like radosgw-admin user create --uid=bob --display-name="bob" but not delete user
[17:03] <jwillem> radosgw-admin user rm --uid=bob
[17:03] <jwillem> could not remove user: unable to remove user, unable to read user bucket info
[17:04] <fghaas> willem: can you do "radosgw-admin bucket stat --uid=bob"?
[17:04] <fghaas> or s/stat/list/ ?
[17:04] <fghaas> possibly one of your buckets needs fixing
[17:04] <fghaas> before it can be deleted
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[17:05] <jwillem> radosgw-admin bucket stats --uid=bob -> no error but nothing to see
[17:06] <fghaas> try with "bucket list" ?
[17:07] <jwillem> radosgw-admin bucket list --uid=bob -> same , no error nothing to see
[17:07] <jwillem> this is a new install , with somekind of a problem
[17:08] <fghaas> how many buckets do you have in total? too many to list in a "radosgw-admin bucket list" without specifying --uid?
[17:08] <jwillem> none yet
[17:08] <jwillem> adosgw-admin bucket list -> []
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[17:11] <orion195> fghaas: janos :)
[17:14] <orion195> fghaas: how can I do a snapshot of a running instance?
[17:14] <orion195> (from horizon, it seems not working)
[17:16] <fghaas> jwillem: check your radosgw logs then
[17:18] <fghaas> orion195: "nova volume-snapshot-create" and "cinder snapshot-create" should both work; I believe the former is deprecated and the latter is preferred
[17:19] <jwillem> not much help for me: ERROR: can't read user header: ret=-95
[17:19] <jwillem> ERROR: sync_user() failed, user=bob ret=-95
[17:21] <orion195> fghaas: it seems that the command to create the snapshot always creates a tmp file on the local file and after it uploads it to glance (rbd backend)
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[17:21] <orion195> fghaas: is there any way to perform a kind of: copy-on-write?
[17:21] <orion195> or something like that?
[17:22] <fghaas> orion195: http://ceph.com/docs/master/rbd/rbd-openstack/ -- see what it says about show_image_direct_url=True
[17:23] <fghaas> jwillem: -95 is EOPNOTSUPP, aka "operation not supported"... odd
[17:23] <orion195> fghaas: I di have it already enabled, this is why I'm asking :)
[17:24] <fghaas> orion195: sorry, I have no idea what else you set up or didn't, pretty much no way to troubleshoot this by irc
[17:24] <orion195> fghaas: :(
[17:24] <orion195> fghaas: do you have any idea on why I cannot see and/or create snapshot in horizon?
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[17:29] <jwillem> in /etc/ceph/ceph.conf in [global] i had to inser line keyring = /etc/ceph/ceph.client.admin.keyring
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[17:30] <jwillem> also in [client.radosgw.gateway] i have the normal keyring = /etc/ceph/keyring.radosgw.gateway
[17:30] <jwillem> is this global admin.keyring normal?
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[17:32] <jwillem> else i would have: monclient(hunting): ERROR: missing keyring, cannot use cephx for authentication
[17:32] <jwillem> librados: client.admin initialization error (2) No such file or directory
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[17:50] <saturnine> Is it possible to change the name of a cluster without breaking things?
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[18:14] <wrale> I'm trying to achieve converged networking.. That is, replication VLAN + client VLAN.. After running some iperf3 tests, link follows, I have determined that packet retransmissions happen without QoS (experiment used SR-IOV default QoS). Anyway, I'm hoping to get some tips on how to apply DCBX at the switch to achieve VLAN vs. VLAN QoS..(sans FCoE)...
[18:14] <wrale> https://gist.github.com/josh-wrale/9101038
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[18:17] <wrale> It seems I need the lldpad service to configure dcbx on the servers. However, I'd like to do it by default by VLAN (vs. by protocol or port number).. Someone suggested applying skb priority (QoS) to each VLAN via iptables.. This seems sub-optimal, as it seems that the 'vconfig' command is capable of doing this.. (I'm still lost, however).
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[18:37] <verdurin> Can I use ceph-deploy to test Firefly? If so, is a special version needed?
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[18:43] <sage> verdurin: yes, but there aren't release packages pushed out yet. you can install with 'ceph-deploy install --dev=firefly ...' to grab the latest build from git
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[18:49] <verdurin> sage: thanks, that worked
[18:49] <sage> cool
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[18:50] <fghaas> wrale: wrong channel?
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[18:53] <wrale> fghaas: i thought not, but i guess so
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[18:59] <bens> i distinctly remeber setting a unit )like a block size) on this cluster to 4mb
[18:59] <bens> but I can't find it.
[18:59] <bens> is that even a thing?
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[19:13] <bandrus> bens: https://github.com/ceph/ceph/blob/v0.67.7/src/common/config_opts.h#L622
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