Re: [ceph-users] Even data distribution across OSD - Impossible Achievement?

2016-10-17 Thread Christian Balzer
quot; > To: ceph-users@lists.ceph.com, i...@witeq.com > Sent: Monday, October 17, 2016 8:57:16 AM > Subject: Re: [ceph-users] Even data distribution across OSD - Impossible > Achievement? > > > Op 14 oktober 2016 om 19:13 schreef i...@witeq.com: > > > >

Re: [ceph-users] Even data distribution across OSD - Impossible Achievement?

2016-10-17 Thread info
prospective in terms of capacity planning, what would you do in production? Thanks Giordano From: "Wido den Hollander" To: ceph-users@lists.ceph.com, i...@witeq.com Sent: Monday, October 17, 2016 8:57:16 AM Subject: Re: [ceph-users] Even data distribution across OSD - Impossible A

Re: [ceph-users] Even data distribution across OSD - Impossible Achievement?

2016-10-16 Thread Wido den Hollander
> Op 14 oktober 2016 om 19:13 schreef i...@witeq.com: > > > Hi all, > > after encountering a warning about one of my OSDs running out of space i > tried to study better how data distribution works. > 100% perfect data distribution is not possible with straw. It is even very hard to accomp

[ceph-users] Even data distribution across OSD - Impossible Achievement?

2016-10-14 Thread info
Hi all, after encountering a warning about one of my OSDs running out of space i tried to study better how data distribution works. I'm running a Hammer Ceph cluster v. 0.94.7 I did some test with crushtool trying to figure out how to achieve even data distribution across OSDs. Let's take