On Wed, Jan 13, 2021 at 03:16:52PM +0000, Trond Myklebust wrote: > How would that work then? Would you just look at the project ID of the > directory identified by the filehandle as the export point, and then > match to the project ID on the target inode? That sounds like it > doesn't even need to encode anything special in the filehandle. True, we would not even have to encode them. > How do you set a project ID in XFS? With the XFS_IOC_SETXFLAGS ioctl. On the command line side people usually do it using the xfs_quota tool as part of setting up the tree quotas, but it can also be done separately using the chproj subcommand of xfs_io.
