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Subject: RE: [ceph-users] Replacing a failed OSD
> -Original Message-
> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Jim
> Kilborn
> Sent: 14 September 2016 20:30
> To: Reed Dier
>
inkId=550986> for Windows 10
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>
> From: Reed Dier<mailto:reed.d...@focusvq.com>
> Sent: Wednesday, September 14, 2016 1:39 PM
> To: Jim Kilborn<mailto:j...@kilborns.com>
> Cc: ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com>
> Subject:
> -Original Message-
> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Jim
> Kilborn
> Sent: 14 September 2016 20:30
> To: Reed Dier
> Cc: ceph-users@lists.ceph.com
> Subject: Re: [ceph-users] Replacing a failed OSD
>
> Reed,
>
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ceph.com>
Subject: Re: [ceph-users] Replacing a failed OSD
Hi Jim,
This is pretty fresh in my mind so hopefully I can help you out here.
Firstly, the crush map will back fill any holes in the enumeration that are
existing. So assuming only one drive has been removed from the crush map, it
Hi Jim,
This is pretty fresh in my mind so hopefully I can help you out here.
Firstly, the crush map will back fill any holes in the enumeration that are
existing. So assuming only one drive has been removed from the crush map, it
will repopulate the same OSD number.
My steps for removing an O
I am finishing testing our new cephfs cluster and wanted to document a failed
osd procedure.
I noticed that when I pulled a drive, to simulate a failure, and run through
the replacement steps, the osd has to be removed from the crushmap in order to
initialize the new drive as the same osd number
When you reformat the drive, it generates a new UUID so to Ceph it is as if
it was a brand new drive. This does seem heavy handed, but ceph was
designed for things to fail and it is not unusual to do things this way.
Ceph is not RAID so you usually have to do some unthinking.
You could probably ke
I have been experimenting with Ceph, and have some OSDs with drives
containing XFS filesystems which I want to change to BTRFS.
(I started with BTRFS, then started again from scratch with XFS
[currently recommended] in order to eleminate that as a potential cause
of some issues, now with further ex
