Re: [ceph-users] Question about object partial writes in RBD

> Op 13 juni 2016 om 16:07 schreef George Shuklin : > > > Hello. > > How objects are handled in the rbd? If user writes 16k in the RBD image > with 4Mb object size, how much would be written in the OSD? 16k x > replication or 4Mb x replication (+journals for both

[ceph-users] Question about object partial writes in RBD

Hello. How objects are handled in the rbd? If user writes 16k in the RBD image with 4Mb object size, how much would be written in the OSD? 16k x replication or 4Mb x replication (+journals for both cases)? Thanks. ___ ceph-users mailing list

Re: [ceph-users] Question upgrading to Jewel

The notice about image format 1 being deprecated was somewhat hidden in the release notes. Displaying that message when opening an existing format 1 image is overkill and should be removed (at least until we come up with some sort of online migration tool in a future Ceph release). [1]

Re: [ceph-users] Question upgrading to Jewel

One more thing: I haven't seen anything regarding the following message: # rbd lock list 25091 2016-04-22 19:39:31.523542 7fd199d57700 -1 librbd::image::OpenRequest: RBD image format 1 is deprecated. Please copy this image to image format 2. Is it something that i should worry ? --- Diego

Re: [ceph-users] Question upgrading to Jewel

yeah, i followed the release notes. Everything is working, just hit this issue until enabled services individually. Tks --- Diego Castro / The CloudFather GetupCloud.com - Eliminamos a Gravidade 2016-04-22 12:24 GMT-03:00 Vasu Kulkarni : > Hope you followed the release

Re: [ceph-users] Question upgrading to Jewel

Hope you followed the release notes and are on 0.94.4 or above http://docs.ceph.com/docs/master/release-notes/#upgrading-from-hammer 1) upgrade ( ensure you dont have user 'ceph' before) 2) stop the service /etc/init.d/ceph stop (since you are on centos/hammer) 3) change ownership

[ceph-users] Question upgrading to Jewel

Hello, i've upgraded my hammer cluster with the following steps: Running CentOS 7.1 upgrade ceph-deploy ceph-deploy install --release hammer mon{0..2} After that i couldn't start the mon service, systemctl start ceph.target (no errors at all, just don't get the daemon running). I managed to

Re: [ceph-users] Question about cache tier and backfill/recover

On Fri, 25 Mar 2016 14:14:37 -0700 Bob R wrote: > Mike, > > Recovery would be based on placement groups and those degraded groups > would only exist on the storage pool(s) rather than the cache tier in > this scenario. > Precisely. They are entirely different entities. There may be partially

Re: [ceph-users] Question about cache tier and backfill/recover

Mike, Recovery would be based on placement groups and those degraded groups would only exist on the storage pool(s) rather than the cache tier in this scenario. Bob On Fri, Mar 25, 2016 at 8:30 AM, Mike Miller wrote: > Hi, > > in case of a failure in the storage tier,

[ceph-users] Question about cache tier and backfill/recover

Hi, in case of a failure in the storage tier, say single OSD disk failure or complete system failure with several OSD disks, will the remaining cache tier (on other nodes) be used for rapid backfilling/recovering first until it is full? Or is backfill/recovery done directly to the storage

Re: [ceph-users] Question: replacing all OSDs of one node in 3node cluster

om>; ceph-users <ceph-users@lists.ceph.com> Subject: Re: [ceph-users] Question: replacing all OSDs of one node in 3node cluster As far as i know you can do it in two ways: (assuming you hace a pool size of 3 on all 3 nodes with min_size 2 to still have access to data) 1. Set noou

[ceph-users] Question: replacing all OSDs of one node in 3node cluster

Hi Ceph users This is my first post on this mailing list. Hope it's the correct one. Please redirect me to the right place in case it is not. I am running a small (3 nodes with 3 OSD and 1 monitor on each of them) Ceph cluster. Guess what, it is used as Cinder/Glance/Nova RDB storage for

Re: [ceph-users] Question: replacing all OSDs of one node in 3node cluster

Grüezi Daniel, my first question would be: Whats your pool size / min_size? ceph osd pool get pool-name It is probably 3 (default size). If you want to have healthy state again with only 2 nodes (all the OSDs on node 3 are down), you have to set your pool size to 2: ceph osd pool set pool-name

Re: [ceph-users] Question: replacing all OSDs of one node in 3node cluster

Hi Daniel, oops, wrong copy paste, here are the correct commands: ceph osd pool get pool-name size ceph osd pool set pool-name size 2 On Wed, Feb 10, 2016 at 6:27 PM, Ivan Grcic wrote: > Grüezi Daniel, > > my first question would be: Whats your pool size / min_size? > > ceph

Re: [ceph-users] Question: replacing all OSDs of one node in 3node cluster

As far as i know you can do it in two ways: (assuming you hace a pool size of 3 on all 3 nodes with min_size 2 to still have access to data) 1. Set noout for not starting the rebalance of the cluster. Reinstall OS on the faulty node and redeploy the node with all keys and conf files (either

[ceph-users] Question about OSD activate with ceph-deploy

Hi all, I'm having some issues while trying to run the osd activate command with ceph-deploy tool (1.5.28), the osd prepare command run fine, but then... osd: sdf1 journal: /dev/sdc1 $ ceph-deploy osd activate cibn01:sdf1:/dev/sdc1 [ceph_deploy.conf][DEBUG ] found configuration file at:

[ceph-users] Question about the Ceph Pluins Jerasure, reed_sol_r6_op not work for OSD binding

HI, Experts and Supporters I am newer for CEPH so maybe the the question looks simple and stupids sometimes i want to create the Ceph Cluster with the algorithm of Reed solomn Raid 6, Jerasure has the plugin "reed_sol_r6_op" but it seems i can't bind the pool with the OSDs the steps:

Re: [ceph-users] Question about rbd flag(RBD_FLAG_OBJECT_MAP_INVALID)

> Thanks for your reply, why not rebuild object-map when object-map feature is > enabled. > > Cheers, > xinxin > My initial motivation was to avoid a potentially lengthy rebuild when enabling the feature. Perhaps that option could warn you to rebuild the object map after its been enabled.

Re: [ceph-users] Question about rbd flag(RBD_FLAG_OBJECT_MAP_INVALID)

> Hi Jason dillaman > Recently I worked on the feature http://tracker.ceph.com/issues/13500 , when > I read the code about librbd, I was confused by RBD_FLAG_OBJECT_MAP_INVALID > flag. > When I create a rbd with “—image-features = 13 ” , we enable object-map > feature without setting

Re: [ceph-users] Question about rbd flag(RBD_FLAG_OBJECT_MAP_INVALID)

Thanks for your reply, why not rebuild object-map when object-map feature is enabled. Cheers, xinxin -Original Message- From: Jason Dillaman [mailto:dilla...@redhat.com] Sent: Tuesday, October 27, 2015 9:20 PM To: Shu, Xinxin Cc: ceph-users Subject: Re: Question about rbd

Re: [ceph-users] Question about hardware and CPU selection

Hello, There are of course a number of threads in the ML archives about things like this. On Sat, 24 Oct 2015 17:48:35 +0200 Mike Miller wrote: > Hi, > > as I am planning to set up a ceph cluster with 6 OSD nodes with 10 > harddisks in each node, could you please give me some advice about >

[ceph-users] Question about hardware and CPU selection

Hi, as I am planning to set up a ceph cluster with 6 OSD nodes with 10 harddisks in each node, could you please give me some advice about hardware selection? CPU? RAM? I am planning a 10 GBit/s public and a separate 10 GBit/s private network. For a smaller test cluster with 5 OSD nodes and 4

Re: [ceph-users] question on reusing OSD

The move journal, partition resize, grow file system approach would work nicely if the spare capacity were at the end of the disk. Unfortunately, the gdisk (0.8.1) end of disk location bug caused the journal placement to be at the 800GB mark, leaving the largest remaining partition at the end of

Re: [ceph-users] question on reusing OSD

So I just realized I had described the partition error incorrectly in my initial post. The journal was placed at the 800GB mark leaving the 2TB data partition at the end of the disk. (See my follow-up to Lionel for details.) I'm working to correct that so I have a single large partition the

Re: [ceph-users] question on reusing OSD

Hello, On Wed, 16 Sep 2015 07:21:26 -0500 John-Paul Robinson wrote: > The move journal, partition resize, grow file system approach would > work nicely if the spare capacity were at the end of the disk. > That shouldn't matter, you can "safely" loose your journal in controlled circumstances.

Re: [ceph-users] question on reusing OSD

-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 My understanding of growing file systems is the same as yours, it can only grow at the end not the beginning. In addition to that, having partition 2 before partition 1 just cries to me to have it fixed, but that is just aesthetic. Because the

Re: [ceph-users] question on reusing OSD

Christian, Thanks for the feedback. I guess I'm wondering about step 4 "clobber partition, leaving data in tact and grow partition and the file system as needed". My understanding of xfs_growfs is that the free space must be at the end of the existing file system. In this case the existing

Re: [ceph-users] question on reusing OSD

Le 16/09/2015 01:21, John-Paul Robinson a écrit : > Hi, > > I'm working to correct a partitioning error from when our cluster was > first installed (ceph 0.56.4, ubuntu 12.04). This left us with 2TB > partitions for our OSDs, instead of the 2.8TB actually available on > disk, a 29% space hit.

[ceph-users] question on reusing OSD

Hi, I'm working to correct a partitioning error from when our cluster was first installed (ceph 0.56.4, ubuntu 12.04). This left us with 2TB partitions for our OSDs, instead of the 2.8TB actually available on disk, a 29% space hit. (The error was due to a gdisk bug that mis-computed the end of

Re: [ceph-users] Question on cephfs recovery tools

- From: "Goncalo Borges" <gonc...@physics.usyd.edu.au> To: "Shinobu Kinjo" <ski...@redhat.com>, "John Spray" <jsp...@redhat.com> Cc: ceph-users@lists.ceph.com Sent: Tuesday, September 15, 2015 12:39:57 PM Subject: Re: [ceph-users] Question on c

Re: [ceph-users] Question on cephfs recovery tools

Hello John... Thank you for the replies. I do have some comments in line. Bare a bit with me while I give you a bit of context. Questions will appear at the end. 1) I am currently running ceph 9.0.3 and I have install it to test the cephfs recovery tools. 2) I've created a situation where

Re: [ceph-users] Question on cephfs recovery tools

> In your procedure, the umount problems have nothing to do with > corruption. It's (sometimes) hanging because the MDS is offline. If How did you notice that the MDS was offline? It's just because ceph client could not unmount filesystem, or anything? I would like to see logs in mds and osd.

Re: [ceph-users] Question on cephfs recovery tools

On Wed, Sep 9, 2015 at 2:31 AM, Goncalo Borges wrote: > Dear Ceph / CephFS gurus... > > Bare a bit with me while I give you a bit of context. Questions will appear > at the end. > > 1) I am currently running ceph 9.0.3 and I have install it to test the > cephfs

Re: [ceph-users] Question on cephfs recovery tools

>> Finally the questions: >> >> a./ Under a situation as the one describe above, how can we safely terminate >> cephfs in the clients? I have had situations where umount simply hangs and >> there is no real way to unblock the situation unless I reboot the client. If >> we have hundreds of clients,

Re: [ceph-users] Question on cephfs recovery tools

On Thu, Sep 10, 2015 at 7:44 AM, Shinobu Kinjo wrote: >>> Finally the questions: >>> >>> a./ Under a situation as the one describe above, how can we safely terminate >>> cephfs in the clients? I have had situations where umount simply hangs and >>> there is no real way to

Re: [ceph-users] Question on cephfs recovery tools

gt; To: "Goncalo Borges" <gonc...@physics.usyd.edu.au> Cc: ceph-users@lists.ceph.com Sent: Thursday, September 10, 2015 8:49:46 PM Subject: Re: [ceph-users] Question on cephfs recovery tools On Wed, Sep 9, 2015 at 2:31 AM, Goncalo Borges <gonc...@physics.usyd.edu.au> wrote:

Re: [ceph-users] Question on cephfs recovery tools

Did you unmount filesystem using? umount -l Shinobu On Wed, Sep 9, 2015 at 4:31 PM, Goncalo Borges wrote: > Dear Ceph / CephFS gurus... > > Bare a bit with me while I give you a bit of context. Questions will > appear at the end. > > 1) I am currently running

Re: [ceph-users] Question on cephfs recovery tools

@lists.ceph.com> Sent: Wednesday, September 9, 2015 5:28:38 PM Subject: Re: [ceph-users] Question on cephfs recovery tools Did you try to identify what kind of processes were accessing filesystem using fuser or lsof and then kill them? If not, you had to do that first. Shinobu - Ori

Re: [ceph-users] Question on cephfs recovery tools

tember 9, 2015 5:04:23 PM Subject: Re: [ceph-users] Question on cephfs recovery tools Hi Shinobu > Did you unmount filesystem using? > > umount -l Yes! Goncalo > > Shinobu > > On Wed, Sep 9, 2015 at 4:31 PM, Goncalo Borges > <gonc...@physics.usyd.edu.au

[ceph-users] Question on cephfs recovery tools

Dear Ceph / CephFS gurus... Bare a bit with me while I give you a bit of context. Questions will appear at the end. 1) I am currently running ceph 9.0.3 and I have install it to test the cephfs recovery tools. 2) I've created a situation where I've deliberately (on purpose) lost some

Re: [ceph-users] Question on cephfs recovery tools

t: Wednesday, September 9, 2015 5:28:38 PM Subject: Re: [ceph-users] Question on cephfs recovery tools Did you try to identify what kind of processes were accessing filesystem using fuser or lsof and then kill them? If not, you had to do that first. Shinobu - Original Message - From:

Re: [ceph-users] Question on cephfs recovery tools

ephfs-data-scan scan_extents cephfs_dt >> # cephfs-data-scan scan_inodes cephfs_dt >> >> # cephfs-data-scan scan_extents --force-pool cephfs_mt >> (doesn't seem to work) >> >> e./ After running the cephfs tools, everything seemed exactly in >

Re: [ceph-users] Question on cephfs recovery tools

just a way to prepare myself to DC cases which I am certain they will exist, at some point Cheers Goncalo Shinobu - Original Message - From: gonc...@physics.usyd.edu.au To: "Shinobu Kinjo" <ski...@redhat.com> Cc: "ceph-users" <ceph-users@lists.ceph.com> S

Re: [ceph-users] Question about reliability model result

Maybe it's just a precision problem? I calculate the durability from PL(*) columns with the formula: 1-PL(site)-PL(copy)-PL(NRE). Result: 2-cp is 0.99896562 3-cp is 0.99900049 Both of them are approximates to 99.9% Actually the model result is 99.900%. Maybe the author wants us to ignore the

Re: [ceph-users] Question about reliability model result

I haven't looked at the internals of the model, but the PL(site) you've pointed out is definitely the crux of the issue here. In the first grouping, it's just looking at the probability of data loss due to failing disks, and as the copies increase that goes down. In the second grouping, it's

[ceph-users] question from a new cepher about bucket

Hi friends: I put a file(ceph_0.94.2-1.tar.gz, size 23812K) to ceph: ceph@node110:~$ s3cmd ls 2015-08-27 06:13 s3://bkt-key ceph@node110:~$ s3cmd put ceph_0.94.2-1.tar.gz s3://bkt-key WARNING: Module python-magic is not available. Guessing MIME types based on file extensions.

[ceph-users] question from a new cepher about bucket

Hi friends: I put a file(ceph_0.94.2-1.tar.gz, size 23812K) to ceph: ceph@node110:~$ s3cmd ls 2015-08-27 06:13 s3://bkt-key ceph@node110:~$ s3cmd put ceph_0.94.2-1.tar.gz s3://bkt-key WARNING: Module python-magic is not available. Guessing MIME types based on file extensions.

Re: [ceph-users] Question regarding degraded PGs

On Thu, Aug 27, 2015 at 2:54 AM, Goncalo Borges gonc...@physics.usyd.edu.au wrote: Hey guys... 1./ I have a simple question regarding the appearance of degraded PGs. First, for reference: a. I am working with 0.94.2 b. I have 32 OSDs distributed in 4 servers, meaning that I have 8 OSD per

Re: [ceph-users] Question regarding degraded PGs

Hey Greg... Thanks for the reply. At this point the cluster recovered, so I am no longer in that situation. I'll try to go back, reproduce and post the pg query for one of those degraded PGs later on. Cheers Goncalo On 08/27/2015 10:02 PM, Gregory Farnum wrote: On Thu, Aug 27, 2015 at

[ceph-users] Question regarding degraded PGs

Hey guys... 1./ I have a simple question regarding the appearance of degraded PGs. First, for reference: a. I am working with 0.94.2 b. I have 32 OSDs distributed in 4 servers, meaning that I have 8 OSD per server. c. Our cluster is set with 'osd pool default size = 3' and 'osd

Re: [ceph-users] Question about reliability model result

Hi, I have crosspost this issue here and in github, but no response yet. Any advice? On Mon, Aug 10, 2015 at 10:21 AM, dahan dahan...@gmail.com wrote: Hi all, I have tried the reliability model: https://github.com/ceph/ceph-tools/tree/master/models/reliability I run the tool with default

[ceph-users] Question

Hi, Maybe this seems like a strange question but i could not find this info in the docs , i have following question, For the ceph cluster you need osd daemons and monitor daemons, On a host you can run several osd daemons (best one per drive as read in the docs) on one host But now my

Re: [ceph-users] Question

yes. The issue is resource sharing as usual: the MONs will use disk I/O, memory and CPU. If the cluster is small (test?) then there's no problem in using the same disks. If the cluster starts to get bigger you may want to dedicate resources (e.g. the disk for the MONs isn't used by an OSD). If the

Re: [ceph-users] Question about change bucket quota.

Hi Mika, Feature request created: https://bugzilla.redhat.com/show_bug.cgi?id=1240888 On Mon, Jul 6, 2015 at 4:21 PM, Vickie ch mika.leaf...@gmail.com wrote: Dear Cephers, When a bucket created, the default quota setting is unlimited. Is there any setting can change this？ That's admin

[ceph-users] Question about change bucket quota.

Dear Cephers, When a bucket created, the default quota setting is unlimited. Is there any setting can change this？ That's admin no need to change bucket quota one by one. Best wishes, Mika ___ ceph-users mailing list ceph-users@lists.ceph.com

[ceph-users] Question regarding multipart object HEAD calls

Hello, When storing large, multipart objects in the Ceph Object Store (~100 GB and more), we have noticed that HEAD calls against the rados gateway for these objects are excessively slow - in fact, they are about the same as doing a GET on the object. Looking at the logs while this is

Re: [ceph-users] question about OSD failure detection

:08 PM To: ceph-users@lists.ceph.com Subject: [ceph-users] question about OSD failure detection Hi, all, I am new to study Ceph. Trying to understand how it works and designs. One basic question for me is about how Ceph OSD perform failure detection. I did some searching but cannot get satisfied

Re: [ceph-users] question about OSD failure detection

. Xiaoxi From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Liu, Ming (HPIT-GADSC) Sent: Monday, April 13, 2015 12:08 PM To: ceph-users@lists.ceph.commailto:ceph-users@lists.ceph.com Subject: [ceph-users] question about OSD failure detection Hi, all, I am

[ceph-users] question about OSD failure detection

Hi, all, I am new to study Ceph. Trying to understand how it works and designs. One basic question for me is about how Ceph OSD perform failure detection. I did some searching but cannot get satisfied answer, so try to ask here and hope someone can kindly help me. The document said, OSD will

Re: [ceph-users] Question Blackout

Thank you Craig thats the Kind of answer I was expecting for :) actually we have had an outage and 1 server never came up but was because of human error and 1 osd from order node were down so we Couldnt even access to the filesystem but At last I saw that the 90% of the nodes didnt crush or

Re: [ceph-users] Question Blackout

Hi! We have experienced several blackouts on our small ceph cluster. Most annoying problem is time desync just after a blackout: mons are not starting to work before time sync, after resync and manual restart of monitors, some of pgs can stuck in inactive or peering state for a significant

Re: [ceph-users] Question Blackout

I'm not a CephFS user, but I have had a few cluster outages. Each OSD has a journal, and Ceph ensures that a write is in all of the journals (primary and replicas) before it acknowledges the write. If an OSD process crashes, it replays the journal on startup, and recovers the write. I've lost

[ceph-users] Question Blackout

Hi everyone, I am ready to launch ceph on production but there is one thing that keeps on my mind... If there was a Blackout where all the ceph nodes went off what would really happen with the filesystem? It would get corrupt? Or ceph has any Kind of mechanism to survive to something like

[ceph-users] Question about notification of OSD down in client side

Hello, Is there some way to make the client(via RADOS API or something like that) to get the notification of an event (for example, an OSD down) happened in the cluster? -- Den ___ ceph-users mailing list ceph-users@lists.ceph.com

Re: [ceph-users] Question regarding rbd cache

25, 2015 7:12:01 PM Subject: [ceph-users] Question regarding rbd cache Hi folks, I am curious about how RBD cache works, whether it caches and writes back entire objects. For example, if my VM images are stored with order 23 (8MB blocks), would a 64MB rbd cache only be able to cache 8 objects

[ceph-users] Question about rados bench

Hi all, In my reading on the net about various implementations of Ceph, I came across this website blog page (really doesn't give a lot of good information but caused me to wonder): http://avengermojo.blogspot.com/2014/12/cubieboard-cluster-ceph-test.html near the bottom, the person did a rados

Re: [ceph-users] question about rgw create bucket

?Development Objet : [ceph-users] question about rgw create bucket when I create bucket, why rgw create 2 objects in the domain root pool. and one object store struct RGWBucketInfo and the other object store struct RGWBucketEntryPoint and when I delete the bucket , why rgw only delete one object

[ceph-users] question about rgw create bucket

when I create bucket, why rgw create 2 objects in the domain root pool. and one object store struct RGWBucketInfo and the other object store struct RGWBucketEntryPoint and when I delete the bucket , why rgw only delete one object.

[ceph-users] Question regarding rbd cache

Hi folks, I am curious about how RBD cache works, whether it caches and writes back entire objects. For example, if my VM images are stored with order 23 (8MB blocks), would a 64MB rbd cache only be able to cache 8 objects at a time? Or does it work at a more granular fashion? Also, when a

[ceph-users] Question about ceph exclusive object?

Hello, What exactly does the parameter 'bool exclusive' mean in the int librados::IoCtxImpl::create(const object_t oid, bool exclusive)? I can't find any doc to describe this :-( -- Den ___ ceph-users mailing list ceph-users@lists.ceph.com

Re: [ceph-users] Question about ceph exclusive object?

On 2015-02-13 17:54, Dennis Chen wrote: Hello, What exactly does the parameter 'bool exclusive' mean in the int librados::IoCtxImpl::create(const object_t oid, bool exclusive)? I can't find any doc to describe this :-( From documentation in librados.h: it should be set to either either

[ceph-users] Question about output message and object update for ceph class

Hello, I write a ceph client using rados lib to execute a funcution upon the object. CLIENT SIDE CODE === int main() { ... strcpy(in, from client); err = rados_exec(io, objname, devctl, devctl_op, in, strlen(in), out, 128); if (err 0) { fprintf(stderr,

Re: [ceph-users] Question about output message and object update for ceph class

I take back the question, because I just found that for a succeed write opetion in the class, *no* data in the out buffer... On Wed, Feb 4, 2015 at 5:44 PM, Dennis Chen kernel.org@gmail.com wrote: Hello, I write a ceph client using rados lib to execute a funcution upon the object. CLIENT

Re: [ceph-users] Question about primary OSD of a pool

Hello Sudarshan, Thanks, it should be useful when I want to appoint the specific OSD as primary ;-) On Mon, Feb 2, 2015 at 3:50 PM, Sudarshan Pathak sushan@gmail.com wrote: Hello Dennis, You can create CRUSH rule to select one of osd as primary as: rule ssd-primary {

Re: [ceph-users] Question about CRUSH rule set parameter min_size max_size

03, 2015 11:30 AM To: ceph-users Subject: [ceph-users] Question about CRUSH rule set parameter min_size max_size Hi , CRUSH map have two parameter are min_size and max_size. Explanation about min_size is If a pool makes fewer replicas than this number, CRUSH will NOT select this rule

[ceph-users] Question about CRUSH rule set parameter min_size max_size

Hi , CRUSH map have two parameter are min_size and max_size. Explanation about min_size is *If a pool makes fewer replicas than this number, CRUSH will NOT select this rule*. The max_size is *If a pool makes more replicas than this number, CRUSH will NOT select this rule* Default setting of

[ceph-users] Question about primary OSD of a pool

Hello, If I write 2 different objects, eg, john and paul respectively to a same pool like testpool in the cluster, is the primary OSD calculated by CRUSH for the 2 objects the same? -- Den ___ ceph-users mailing list ceph-users@lists.ceph.com

Re: [ceph-users] Question about primary OSD of a pool

Hi You can verify the exact mapping using the following command: ceph osd map {poolname} {objectname} Check page http://docs.ceph.com/docs/master/man/8/ceph for the ceph command. Cheers JC While moving. Excuse unintended typos. On Feb 1, 2015, at 08:04, Loic Dachary l...@dachary.org wrote:

Re: [ceph-users] Question about primary OSD of a pool

On 01/02/2015 14:47, Dennis Chen wrote: Hello, If I write 2 different objects, eg, john and paul respectively to a same pool like testpool in the cluster, is the primary OSD calculated by CRUSH for the 2 objects the same? Hi, CRUSH is likely to place john on an OSD and paul on another

Re: [ceph-users] Question about primary OSD of a pool

On Mon, Feb 2, 2015 at 12:04 AM, Loic Dachary l...@dachary.org wrote: On 01/02/2015 14:47, Dennis Chen wrote: Hello, If I write 2 different objects, eg, john and paul respectively to a same pool like testpool in the cluster, is the primary OSD calculated by CRUSH for the 2 objects the

Re: [ceph-users] Question about primary OSD of a pool

Thanks, I've have the answer with the 'ceph osd map ...' command On Mon, Feb 2, 2015 at 12:50 AM, Jean-Charles Lopez jelo...@redhat.com wrote: Hi You can verify the exact mapping using the following command: ceph osd map {poolname} {objectname} Check page

Re: [ceph-users] Question about primary OSD of a pool

Hello Dennis, You can create CRUSH rule to select one of osd as primary as: rule ssd-primary { ruleset 5 type replicated min_size 5 max_size 10 step take ssd step chooseleaf firstn 1 type host step

Re: [ceph-users] Question about primary OSD of a pool

BTW, you can make crush to always choose the same OSD as primary. ​ ​ Regards, Sudarshan On Mon, Feb 2, 2015 at 9:26 AM, Dennis Chen kernel.org@gmail.com wrote: Thanks, I've have the answer with the 'ceph osd map ...' command On Mon, Feb 2, 2015 at 12:50 AM, Jean-Charles Lopez

Re: [ceph-users] Question about primary OSD of a pool

Hi Sudarshan, Some hints for doing that ? On Mon, Feb 2, 2015 at 1:03 PM, Sudarshan Pathak sushan@gmail.com wrote: BTW, you can make crush to always choose the same OSD as primary. Regards, Sudarshan On Mon, Feb 2, 2015 at 9:26 AM, Dennis Chen kernel.org@gmail.com wrote: Thanks,

[ceph-users] Question about ceph class usage

Hello, I found the document of ceph class usage is very few, below is the only one which can almost address my needs-- http://ceph.com/rados/dynamic-object-interfaces-with-lua/ But still some questions confusing me left there: 1. How to make the OSD to load the class lib? or what's the process

Re: [ceph-users] question about S3 multipart upload ignores request headers

Sorry for the late response, been backed up with other issues. It certainly looks like a promising lead, I'll take a closer look at it. Thanks! Yehuda On Fri, Jan 9, 2015 at 1:05 AM, baijia...@126.com baijia...@126.com wrote: I patch the http://tracker.ceph.com/issues/8452 run s3 test suite

[ceph-users] question about S3 multipart upload ignores request headers

I patch the http://tracker.ceph.com/issues/8452 run s3 test suite and still is error; err log: ERROR: failed to get obj attrs, obj=test-client.0-31zepqoawd8dxfa-212:_multipart_mymultipart.2/0IQGoJ7hG8ZtTyfAnglChBO79HUsjeC.meta ret=-2 I found code that it may has problem: when function exec

[ceph-users] Question about the calamari

hi, all I have install calamari server, calamari client and diamond on a centos server, Then i run the following command: {code} [root@centos65 content]# sudo calamari-ctl initialize [INFO] Loading configuration.. [INFO] Starting/enabling salt... [INFO] Starting/enabling postgres... [INFO]

Re: [ceph-users] Question about the calamari

Can anybody help? On Dec 1, 2014, at 11:37, mail list louis.hust...@gmail.com wrote: hi, all I have install calamari server, calamari client and diamond on a centos server, Then i run the following command: {code} [root@centos65 content]# sudo calamari-ctl initialize [INFO] Loading

Re: [ceph-users] Question about ceph-deploy

Hi Louis, the page you mentioned originally is intended as a quick starter guide for deploying the latest Ceph LTS release and that’s its sole purpose. For specific and advanced ceph-deploy features and usage, there is a dedicated ceph-deploy site right here: http://ceph.com/ceph-deploy/docs

[ceph-users] Question about ceph-deploy

hi all, I want to install ceph using ceph-deploy following http://docs.ceph.com/docs/master/start/quick-start-preflight/ And i want to use the latest version — giant, so i execute the following commands： {code} louis@louis-Latitude-E5440:~/ceph/my-cluster$ wget -q -O-

Re: [ceph-users] Question about ceph-deploy

Hi Louis, ceph-deploy install —release=giant admin-node Cheers JC On Nov 26, 2014, at 20:38, mail list louis.hust...@gmail.com wrote: ceph-deploy install admin-node ___ ceph-users mailing list ceph-users@lists.ceph.com

Re: [ceph-users] Question about ceph-deploy

Thanks JC， It works, and i think ceph should modify the manual. On Nov 27, 2014, at 13:59, Jean-Charles LOPEZ jc.lo...@inktank.com wrote: Hi Louis, ceph-deploy install —release=giant admin-node Cheers JC On Nov 26, 2014, at 20:38, mail list louis.hust...@gmail.com wrote:

[ceph-users] Question about mount the same rbd in different machine

Hi, all I create a rbd named foo, and then map it and mount on two different machine, and when i touch a file on the machine A, machine B can not see the new file, and machine B can also touch a same file! I want to know if the rbd the same on machine A and B? or exactly they are two rbd? Any

Re: [ceph-users] Question about mount the same rbd in different machine

: [ceph-users] Question about mount the same rbd in different machine Hi, all I create a rbd named foo, and then map it and mount on two different machine, and when i touch a file on the machine A, machine B can not see the new file, and machine B can also touch a same file! I want to know

Re: [ceph-users] Question about mount the same rbd in different machine

without a cluster aware file system. -Original Message- From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of mail list Sent: Tuesday, November 25, 2014 7:30 PM To: ceph-us...@ceph.com Subject: [ceph-users] Question about mount the same rbd in different machine

Re: [ceph-users] Question about mount the same rbd in different machine

: Tuesday, November 25, 2014 8:11 PM To: Michael Kuriger Cc: ceph-us...@ceph.com Subject: Re: [ceph-users] Question about mount the same rbd in different machine hi, But i have touched the same file on the two machine under the same rbi with no error. will it cause some problem or just

Re: [ceph-users] Question about mount the same rbd in different machine

: [ceph-users] Question about mount the same rbd in different machine hi, But i have touched the same file on the two machine under the same rbi with no error. will it cause some problem or just not suggested but can do? On Nov 26, 2014, at 12:08, Michael Kuriger mk7...@yp.com wrote

Re: [ceph-users] Question about mount the same rbd in different machine

[mailto:louis.hust...@gmail.com] Sent: Tuesday, November 25, 2014 8:27 PM To: Michael Kuriger Cc: ceph-us...@ceph.com Subject: Re: [ceph-users] Question about mount the same rbd in different machine Hi Michael, I write the same file with different content, and there is no hint for overwrite, so when

Re: [ceph-users] Question about mount the same rbd in different machine

file system. Hope that helps! -Mike -Original Message- From: mail list [mailto:louis.hust...@gmail.com] Sent: Tuesday, November 25, 2014 8:27 PM To: Michael Kuriger Cc: ceph-us...@ceph.com Subject: Re: [ceph-users] Question about mount the same rbd in different machine

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