On Thu, Oct 11, 2018 at 7:47 AM Kinglong Mee <kinglong...@gmail.com> wrote:
> Cc nfs-ganesha, > > Md-cache has option "cache-posix-acl" that controls caching of posix ACLs > ("system.posix_acl_access"/"system.posix_acl_default") and virtual > glusterfs ACLs > ("glusterfs.posix.acl"/"glusterfs.posix.default_acl") now. > Not sure how virtual xattrs are consumed or who generates them. +Raghavendra Talur <rta...@redhat.com> +Thottan, Jiffin <jthot...@redhat.com> - acl maintainers. > But, _posix_xattr_get_set does not fill virtual glusterfs ACLs when lookup > requests. > So, md-cache caches bad virtual glusterfs ACLs. > > After I turn on "cache-posix-acl" option to cache ACLs at md-cache, nfs > client gets many EIO errors. > > https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/427305 > > There are two chooses for cache virtual glusterfs ACLs in md-cache, > 1. Cache it separately as posix ACLs (a new option maybe > "cache-glusterfs-acl" is added); > And make sure _posix_xattr_get_set fills them when lookup requests. > > 2. Does not cache it, only cache posix ACLs; > If gfapi request it, md-cache lookup according posix ACL at cache, > if exist, make the virtual glusterfs ACL locally and return to gfapi; > otherwise, send the request to glusterfsd. > > Virtual glusterfs ACLs are another format of posix ACLs, there are larger > than posix ACLs, > and always exist no matter the really posix ACL exist or not. > > So, I'd prefer #2. > Any comments are welcome. > > thanks, > Kinglong Mee > > _______________________________________________ > Gluster-devel mailing list > Gluster-devel@gluster.org > https://lists.gluster.org/mailman/listinfo/gluster-devel >
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