Hi, > > > It seems more fixes are needed. > > > > I think the problem is that the submount doesn't appear in /proc/mounts. > > "nfsd_fh()" in nfs-utils needs to be able to map from the uuid for a > > filesystem to the mount point. To do this it walks through /proc/mounts > > checking the uuid of each filesystem. If a filesystem isn't listed > > there, it obviously fails. > > > > I guess you could add code to nfs-utils to do whatever "btrfs subvol > > list" does to make up for the fact that btrfs doesn't register in > > /proc/mounts. > > Another approach might be to just change svcxdr_encode_fattr3() and > nfsd4_encode_fattr() in the 'FSIDSOJURCE_UUID' case to check if > dentry->d_inode has a different btrfs volume id to > exp->ex_path.dentry->d_inode. > If it does, then mix the volume id into the fsid somehow. > > With that, you wouldn't want the first change I suggested. This is what I have done. and it is based on linux 5.10.44 but it still not work, so still more jobs needed. Best Regards Wang Yugui (wangyugui@xxxxxxxxxxxx) 2021/06/21
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