Re: [ceph-users] Cache mode readforward mode will eat your babies?

Hello, just to throw some hard numbers into the ring, I've (very much STRESS) tested readproxy vs. readforward with more or less expected results. New Jewel cluster, 3 cache-tier nodes (5 OSD SSDs each), 3 HDD nodes, IPoIB network. Notably 2x E5-2623 v3 @ 3.00GHz in the cache-tiers. 2 VMs (on

[ceph-users] cache tier use cases

Hi community! I'm wondering what are actual use cases for cache tiering? Can I expect improvement of performance with scenario where I use ceph with RBD for VMs hosting? Current pool includes 15 OSD on 10K SAS drives with SSD journal for each 5 OSDs. Thanks Ruslan Email and Anti-Spam

[ceph-users] osd_op_tp timeouts

Hi, We've been having this ongoing problem with threads timing out on the OSDs. Typically we'll see the OSD become unresponsive for about a minute, as threads from other OSDs time out. The timeouts don't seem to be correlated to high load. We turned up the logs to 10/10 for part of a day to

Re: [ceph-users] HA Filesystem mode (MON, OSD, MDS) with Ceph and HAof MDS daemon.

Since your app is an Apache / php app is it possible for you to reconfigure the app to use S3 module rather than a posix open file()? Then with Ceph drop CephFS and configure Civetweb S3 gateway? You can have "active-active" endpoints with round robin dns or F5 or something. You would also have

Re: [ceph-users] ceph-deploy , osd_journal_size and entire disk partiton for journal

Then you want separate partitions for each OSD journal. if you have 4 HDD OSDs using this as they're journal, you should have 4x 5GB partitions on the SSD. On Mon, Jun 12, 2017 at 12:07 PM Deepak Naidu wrote: > Thanks for the note, yes I know them all. It will be shared

Re: [ceph-users] ceph-deploy , osd_journal_size and entire disk partiton for journal

Thanks for the note, yes I know them all. It will be shared among multiple 3-4 HDD OSD Disks. -- Deepak On Jun 12, 2017, at 7:07 AM, David Turner > wrote: Why do you want a 70GB journal? You linked to the documentation, so I'm assuming

Re: [ceph-users] HA Filesystem mode (MON, OSD, MDS) with Ceph and HAof MDS daemon.

2017-06-12 16:10 GMT+02:00 David Turner : > I have an incredibly light-weight cephfs configuration. I set up an MDS > on each mon (3 total), and have 9TB of data in cephfs. This data only has > 1 client that reads a few files at a time. I haven't noticed any downtime >

Re: [ceph-users] HA Filesystem mode (MON, OSD, MDS) with Ceph and HAof MDS daemon.

I have an incredibly light-weight cephfs configuration. I set up an MDS on each mon (3 total), and have 9TB of data in cephfs. This data only has 1 client that reads a few files at a time. I haven't noticed any downtime when it fails over to a standby MDS. So it definitely depends on your

Re: [ceph-users] ceph-deploy , osd_journal_size and entire disk partiton for journal

Why do you want a 70GB journal? You linked to the documentation, so I'm assuming that you followed the formula stated to figure out how big your journal should be... "osd journal size = {2 * (expected throughput * filestore max sync interval)}". I've never heard of a cluster that requires such a

Re: [ceph-users] HA Filesystem mode (MON, OSD, MDS) with Ceph and HAof MDS daemon.

We use the following in our ceph.conf for MDS failover. We're running one active and one standby. Last time it failed over there was about 2 minutes of downtime before the mounts started responding again but it did recover gracefully. [mds] max_mds = 1 mds_standby_for_rank = 0 mds_standby_replay

Re: [ceph-users] RGW: Truncated objects and bad error handling

Adding ceph-devel as this now involves two bugs that are IMO critical, one resulting in data loss, the other in data not getting removed properly. 2017-06-07 9:23 GMT+00:00 Jens Rosenboom : > 2017-06-01 18:52 GMT+00:00 Gregory Farnum : >> >> >> On Thu,

Re: [ceph-users] HA Filesystem mode (MON, OSD, MDS) with Ceph and HAof MDS daemon.

2017-06-12 10:49 GMT+02:00 Burkhard Linke < burkhard.li...@computational.bio.uni-giessen.de>: > Hi, > > > On 06/12/2017 10:31 AM, Daniel Carrasco wrote: > >> Hello, >> >> I'm very new on Ceph, so maybe this question is a noob question. >> >> We have an architecture that have some web servers

Re: [ceph-users] HA Filesystem mode (MON, OSD, MDS) with Ceph and HAof MDS daemon.

Hi, On 06/12/2017 10:31 AM, Daniel Carrasco wrote: Hello, I'm very new on Ceph, so maybe this question is a noob question. We have an architecture that have some web servers (nginx, php...) with a common File Server through NFS. Of course that is a SPOF, so we want to create a multi FS to

[ceph-users] HA Filesystem mode (MON, OSD, MDS) with Ceph and HA of MDS daemon.

Hello, I'm very new on Ceph, so maybe this question is a noob question. We have an architecture that have some web servers (nginx, php...) with a common File Server through NFS. Of course that is a SPOF, so we want to create a multi FS to avoid future problems. We've already tested GlusterFS,

Re: [ceph-users] RGW: Auth error with hostname instead of IP

Hello Eric, You are probably hitting the git commits listed on this thread: http://lists.ceph.com/pipermail/ceph-users-ceph.com/2017-April/017731.html If this is the same behaviour, your options are: a) set all fqn inside the array of hostnames of your zonegroup(s) or b) remove 'rgw dns