Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-18 Thread Anthony D'Atri
On older releases, at least, inflated DBs correlated with miserable recovery performance and lots of slow requests. The DB and OSDs were also on HDD FWIW. A single drive failure would result in substantial RBD impact. > On Feb 18, 2019, at 3:28 AM, Dan van der Ster wrote: > > Not

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-18 Thread M Ranga Swami Reddy
OK, sure will restart the ceph-mon (starting from non leader first, and then last leader node). On Mon, Feb 18, 2019 at 4:59 PM Dan van der Ster wrote: > > Not really. > > You should just restart your mons though -- if done one at a time it > has zero impact on your clients. > > -- dan > > > On

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-18 Thread Dan van der Ster
Not really. You should just restart your mons though -- if done one at a time it has zero impact on your clients. -- dan On Mon, Feb 18, 2019 at 12:11 PM M Ranga Swami Reddy wrote: > > Hi Sage - If the mon data increases, is this impacts the ceph cluster > performance (ie on ceph osd bench,

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-18 Thread Dan van der Ster
On Thu, Feb 14, 2019 at 2:31 PM Sage Weil wrote: > > On Thu, 7 Feb 2019, Dan van der Ster wrote: > > On Thu, Feb 7, 2019 at 12:17 PM M Ranga Swami Reddy > > wrote: > > > > > > Hi Dan, > > > >During backfilling scenarios, the mons keep old maps and grow quite > > > >quickly. So if you have

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-18 Thread M Ranga Swami Reddy
Hi Sage - If the mon data increases, is this impacts the ceph cluster performance (ie on ceph osd bench, etc)? On Fri, Feb 15, 2019 at 3:13 PM M Ranga Swami Reddy wrote: > > today I again hit the warn with 30G also... > > On Thu, Feb 14, 2019 at 7:39 PM Sage Weil wrote: > > > > On Thu, 7 Feb

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-15 Thread M Ranga Swami Reddy
today I again hit the warn with 30G also... On Thu, Feb 14, 2019 at 7:39 PM Sage Weil wrote: > > On Thu, 7 Feb 2019, Dan van der Ster wrote: > > On Thu, Feb 7, 2019 at 12:17 PM M Ranga Swami Reddy > > wrote: > > > > > > Hi Dan, > > > >During backfilling scenarios, the mons keep old maps and

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-14 Thread M Ranga Swami Reddy
Sure, will this. For now I have creased the size to 30G (from 15G). On Thu, Feb 14, 2019 at 7:39 PM Sage Weil wrote: > > On Thu, 7 Feb 2019, Dan van der Ster wrote: > > On Thu, Feb 7, 2019 at 12:17 PM M Ranga Swami Reddy > > wrote: > > > > > > Hi Dan, > > > >During backfilling scenarios, the

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-14 Thread Sage Weil
On Thu, 7 Feb 2019, Dan van der Ster wrote: > On Thu, Feb 7, 2019 at 12:17 PM M Ranga Swami Reddy > wrote: > > > > Hi Dan, > > >During backfilling scenarios, the mons keep old maps and grow quite > > >quickly. So if you have balancing, pg splitting, etc. ongoing for > > >awhile, the mon stores

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-07 Thread M Ranga Swami Reddy
Alternatively, will increase the mon_data_size to 30G (from 15G).. Thanks Swami On Thu, Feb 7, 2019 at 8:44 PM Dan van der Ster wrote: > > On Thu, Feb 7, 2019 at 4:12 PM M Ranga Swami Reddy > wrote: > > > > >Compaction isn't necessary -- you should only need to restart all > > >peon's then

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-07 Thread Dan van der Ster
On Thu, Feb 7, 2019 at 4:12 PM M Ranga Swami Reddy wrote: > > >Compaction isn't necessary -- you should only need to restart all > >peon's then the leader. A few minutes later the db's should start > >trimming. > > As we on production cluster, which may not be safe to restart the > ceph-mon,

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-07 Thread M Ranga Swami Reddy
>Compaction isn't necessary -- you should only need to restart all >peon's then the leader. A few minutes later the db's should start >trimming. As we on production cluster, which may not be safe to restart the ceph-mon, instead prefer to do the compact on non-leader mons. Is this ok? Thanks

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-07 Thread Dan van der Ster
On Thu, Feb 7, 2019 at 12:17 PM M Ranga Swami Reddy wrote: > > Hi Dan, > >During backfilling scenarios, the mons keep old maps and grow quite > >quickly. So if you have balancing, pg splitting, etc. ongoing for > >awhile, the mon stores will eventually trigger that 15GB alarm. > >But the intended

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-07 Thread M Ranga Swami Reddy
Hi Sage Sure, we will increase the mon_data_size to 30G to avoid this type of warning. And currently we are using 500G disk here. I guss, which should good enough here. Thanks Swami On Wed, Feb 6, 2019 at 5:56 PM Sage Weil wrote: > > Hi Swami > > The limit is somewhat arbitrary, based on

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-07 Thread M Ranga Swami Reddy
Hi Dan, >During backfilling scenarios, the mons keep old maps and grow quite >quickly. So if you have balancing, pg splitting, etc. ongoing for >awhile, the mon stores will eventually trigger that 15GB alarm. >But the intended behavior is that once the PGs are all active+clean, >the old maps

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-06 Thread Dan van der Ster
Hi, With HEALTH_OK a mon data dir should be under 2GB for even such a large cluster. During backfilling scenarios, the mons keep old maps and grow quite quickly. So if you have balancing, pg splitting, etc. ongoing for awhile, the mon stores will eventually trigger that 15GB alarm. But the

Re: [ceph-users] ceph mon_data_size_warn limits for large cluster

2019-02-06 Thread Sage Weil
Hi Swami The limit is somewhat arbitrary, based on cluster sizes we had seen when we picked it. In your case it should be perfectly safe to increase it. sage On Wed, 6 Feb 2019, M Ranga Swami Reddy wrote: > Hello - Are the any limits for mon_data_size for cluster with 2PB > (with 2000+