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Hi Felix,
I'm wondering if the assignments changes if you reset the BIOS.
Also, when you insert a new disk in between what happens to the
old disks, do they keep their assignments (or as Mehmet said, do
you get an in-between number)? If not you may get into worse
problems if disks fail or you add new disks.
We also switched from /dev/sd* nodes to /dev/disk/by-path/* as we
had trouble pinning /dev/sd* devices to the same slot but we are
not yet sure if it always works. For us, since servers are
different, the solution is to first boot the node (ubuntu/fedora
live), get the disk assignments, configure puppet for each node
(we are using puppet) and do a remote install with the correct
paths but this is just for the initial install.
Regards,
Ovidiu
On 04/21/2017 01:20 AM, Mehmet wrote:
Hi Felix,
What happens when you Restart the Server - is the numbering then
identical?
I have this behavior on Intel Server and when i put additional
Disks in Runtime, the numbering increases but i expect to get a
Number from between two Slots (of course when i put a Disk between
this slots).
Hope you understand what i mean :)
HTH
Mehmet
Am 20. April 2017 09:19:32 MESZ schrieb
"Stolte, Felix" <f.stolte@xxxxxxxxxxxxx>:
Hello cephers,
is anyone using Fujitsu Hardware for Ceph OSDs with the PRAID EP400i
Raidcontroller in JBOD Mode? We are having three identical servers with
identical Disk placement. First three Slots are SSDs for journaling and
remaining nine slots with SATA Disks. Problem is, that in Ubuntu (and I
would guess in any other distribution as well) the disk paths for the same
physical drive slot differ between the three servers. For example on Server
A first disk is identified as "pci-0000:01:00.0-scsi-0:0:14:0" and as
"pci-0000:01:00.0-scsi-0:0:17:0" on the other. This makes provisioning osds
nearly impossible. Anyone ran into the same issue an knows how to fix this?
Fujitsu support couldn't help (in fact they did not know, that you can put
the controller in JBOD mode ...). I actvated JBOD via the "Enable JBOD"
option in the controller management menu of the praid ep400i raid
controller.
Cheers Felix
Felix Stolte
IT-Services
E-Mail: f.stolte@xxxxxxxxxxxxx
Internet: http://www.fz-juelich.de
Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher
Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender),
Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt
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