[sheepdog-users] [sheepdog] [PATCH 04/11] Doc. "Sheepdog Basic" add chapter "start the cluster"
namei.unix at gmail.com
Tue Oct 22 07:51:28 CEST 2013
On Mon, Oct 21, 2013 at 03:13:34PM +0200, Valerio Pachera wrote:
> 2013/10/20 Dennis Jacobfeuerborn <dennisml at conversis.de>:
> >> +1. filesystem has to be mounted with *user_xattr* option (ext3, ext4);
> >> +2. assign a whole device to sheep daemon
> > Again, is this verified by Sheepdog?
> Sheepdog won't work at all without 'user_xattr' option.
> If you don't use a dedicated device, the space available for sheepdog
> will vary when you write/delete data for other reasons.
> E.g. you have everything installed in '/' and you use the folder /sheep.
> When you add the node to the cluster, sheepdog will assign a wight
> based on the free space.
> If you write lot's of data in your home folder, free space will change
> for sheepdog as well, but the weight of the node doesn't change,
> leading to unexpected result (disk full or I/O errors).
> It's also much easier to say "use a dedicated device" than explain all
> this stuff to a new user.
Probably the rationale why life is easier with dedicated device for data store
should be put in the documentation.
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