On Mon, 2013-07-29 at 23:06 +0200, Lennart Poettering wrote: > Well, the point I am making is that it is wrong to ask userspace to > handle this. Get the APIs right you expose to userspace. If user space assume it can use 'all the space up to 15% from exhausting space' then it is user space that is wrong to me. Even w/o thin provisioning you do not want any application to boundlessly consume terabytes of space just because it happen to sit on a *big* disk. Applications may use heuristics to better behave in 'common' situations, but should limit themselves also on the max space they are going to consume in general (or better have admin controllable knobs to do so coupled with reasonable defaults). > I mean, ultimately for me it doesn't matter I geuss, since you say > neither the fs/block layer nor userspace should care, but that this is > the admin's problem, but that really sounds like chickening out to > me... Given the admin is the only one that knows for any given situation what is more important to him I do not think there is much more you can do. Sure you can set defaults or what not but there isn't any configuration that will ever be right short of something that can read minds. What you can do is give admin knobs to tweak in user space, as well as in the kernel. So that applications can limit themselves based on configuration, lacking those knobs you need to provide mechanisms a la cgroups that are used to hard limit misbehaving apps that think they are at an all-you-can-it buffet. Simo. > -- Simo Sorce * Red Hat, Inc * New York -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
