[ceph-users] Cannot mount ceph filesystem: error 5 (Input/Output error)

2013-03-10 Thread waed Albataineh
Hi, When trying to mount Ceph filesystem using "sudo mount -t ceph {ip-address-of-monitor}:6789:/ /mnt/mycephfs" The command hang for a while then fails with error msg  mount 5 = Input/Outpu error  !! and then used ceph -s and the output  : 2013-03-10 13:23:03.834877 7f26b0d8e700  0 -- :/6672

Re: [ceph-users] Cannot mount ceph filesystem: error 5 (Input/Output error)

2013-03-10 Thread Wido den Hollander
On 03/10/2013 12:30 PM, waed Albataineh wrote: Hi, When trying to mount Ceph filesystem using "sudo mount -t ceph {ip-address-of-monitor}:6789:/ /mnt/mycephfs" The command hang for a while then fails with error msg mount 5 = Input/Outpu error !! and then used ceph -s and the output : 2013-03

Re: [ceph-users] Can't Mount CephFS

2013-03-10 Thread Wido den Hollander
On 03/09/2013 06:55 PM, Scott Kinder wrote: I'm running ceph 0.56.3 on CentOS, and when I try to mount ceph as a file system on other servers, the process just waits interminably. I'm not seeing any relevant entries in syslog on the hosts trying to mount the file system, nor am I seeing any entri

Re: [ceph-users] Raw disks under OSDs or HW-RAID6 is better?

2013-03-10 Thread Wido den Hollander
On 03/08/2013 02:17 PM, Mihály Árva-Tóth wrote: Hello, We're planning 3 hosts, 12 HDDs in each host. Which is the better? If we set up 1 OSD - 1 HDD structure or create hardware RAID-6 all of 12 HDDs and only one OSD uses the whole disk space in one host? I'd saw 12 "RAW" disks, so 12 OSDs. I

Re: [ceph-users] Raw disks under OSDs or HW-RAID6 is better?

2013-03-10 Thread Dimitri Maziuk
On 3/8/2013 7:17 AM, Mihály Árva-Tóth wrote: Hello, We're planning 3 hosts, 12 HDDs in each host. Which is the better? If we set up 1 OSD - 1 HDD structure or create hardware RAID-6 all of 12 HDDs and only one OSD uses the whole disk space in one host? I suspect the issue is what you're going

Re: [ceph-users] Configuration file

2013-03-10 Thread John Wilkins
Waed, The only thing you need to consider on a small test cluster is performance. Do you want to separate journal drives from data drives? That's where your real performance difference occurs. With a two host cluster, you can just specify the different hosts. The question is whether you separate t

Re: [ceph-users] I/O Speed Comparisons

2013-03-10 Thread Wolfgang Hennerbichler
Let me know if I can help out with testing somehow. Wolfgang Von: ceph-users-boun...@lists.ceph.com [ceph-users-boun...@lists.ceph.com]" im Auftrag von "Mark Nelson [mark.nel...@inktank.com] Gesendet: Samstag, 09. März 2013 20:33 Bis: ceph-users@lists.ce