On Fri, Oct 9, 2015 at 9:34 PM, Alexander Morozov <alexandr.morozov@xxxxxxxxxx> wrote: > There were reports that overlay doesn't work very well with unix-sockets. > In particular you can't access unix-socket through hardlink on overlay fs. > Problem is that overlay creates different inodes for hardlinks and code in > net/unix/af_unix.c relies on inodes for unix-socket lookup. I think this > affects any code which relies on inodes from kern_path. There is helper > d_backing_inode, which I think supposed to get inodes from underlying fs > (for example ext4), but in current implementation it does nothing. These > patches made on top of v4.3-rc4 of main linux tree (master is broken for my > ubuntu VM), but I tested that they applying on master and there was no > changes to overlay since v4.3-rc4. > > Alexander Morozov (2): > fs/overlay: move update and instantiate dentry code to function > fs/overlay: use same inodes for hardlinks Problem is with lookup: how do we go from backing dentry to overlayfs dentry so the inode can be shared? Thanks, Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
