[DRBD-user] Configuring the scheduler for a DRBD backend

Wiebe Cazemier wiebe at halfgaar.net
Mon Jul 15 18:14:16 CEST 2013

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

----- Original Message -----
> From: "Lars Ellenberg" <lars.ellenberg at linbit.com>
> To: drbd-user at lists.linbit.com
> Sent: Monday, 15 July, 2013 5:56:51 PM
> Subject: Re: [DRBD-user] Configuring the scheduler for a DRBD backend
> Why not just use deadline as default scheduler, and be done with it
> ;-)
> (kernel boot parameter elevator=deadline)

Well, for one, one of the server has a hardware RAID controller (3Ware 9650 SE), and 'they' say that in that case, noop is better. I haven't decided if that's true, because I didn't know that hardware RAID performed scheduling. I just thought it did whatever it was told by the OS.

But, you're saying deadline is better overall?

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