Hi all, Sorry for confusion and maybe dumb questions: - The aim is to transfer these attributes via RFC8276 (File System Extended attributes in NFSv4)? - AFAIK support for RFC8276 in NFS (only version 4.2) server is since kernel 5.9, right? NFS client supports these as well? - The patches below implements the feature in both, nfs client AND server, right? I am bit confused as "btime" does not seem to be stored as extended attribute in most local filesystems (checked ext4) but is in standard inode structure. Thanks, Ondrej -----Original Message----- From: Trond Myklebust <trondmy@xxxxxxxxxxxxxxx> Sent: pondělí 3. ledna 2022 21:52 To: bfields@xxxxxxxxxxxx; trondmy@xxxxxxxxxx Cc: linux-nfs@xxxxxxxxxxxxxxx; anna.schumaker@xxxxxxxxxx Subject: Re: [PATCH 0/8] Support btime and other NFSv4 specific attributes On Mon, 2022-01-03 at 15:51 -0500, J. Bruce Fields wrote: > On Fri, Dec 17, 2021 at 03:48:46PM -0500, trondmy@xxxxxxxxxx wrote: > > From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> > > > > NFSv4 has support for a number of extra attributes that are of > > interest to Samba when it is used to re-export a filesystem to > > Windows clients. > > Aside from the btime, which is of interest in statx(), Windows > > clients have an interest in determining the status of the 'hidden', > > and 'system' > > flags. > > Backup programs want to read the 'archive' flags and the 'time > > backup' > > attribute. > > Finally, the 'offline' flag can tell whether or not a file needs to > > be staged by an HSM system before it can be read or written to. > > > > The patch series also adds an ioctl() to allow userspace retrieval > > and setting of these attributes where appropriate. It also adds an > > ioctl() > > to allow retrieval of the raw NFSv4 ACCESS information, to allow > > more fine grained determination of the user's access rights to a > > file or directory. All of this information is of use for Samba. > > Same question, what filesystem and server are you testing against? > Same answer. > --b. > > > > > Anne Marie Merritt (3): > > nfs: Add timecreate to nfs inode > > nfs: Add 'archive', 'hidden' and 'system' fields to nfs inode > > nfs: Add 'time backup' to nfs inode > > > > Richard Sharpe (1): > > NFS: Support statx_get and statx_set ioctls > > > > Trond Myklebust (4): > > NFS: Expand the type of nfs_fattr->valid > > NFS: Return the file btime in the statx results when appropriate > > NFSv4: Support the offline bit > > NFSv4: Add an ioctl to allow retrieval of the NFS raw ACCESS mask > > > > fs/nfs/dir.c | 71 ++--- > > fs/nfs/getroot.c | 3 +- > > fs/nfs/inode.c | 147 +++++++++- > > fs/nfs/internal.h | 10 + > > fs/nfs/nfs3proc.c | 1 + > > fs/nfs/nfs4_fs.h | 31 +++ > > fs/nfs/nfs4file.c | 550 > > ++++++++++++++++++++++++++++++++++++++ > > fs/nfs/nfs4proc.c | 175 +++++++++++- > > fs/nfs/nfs4trace.h | 8 +- > > fs/nfs/nfs4xdr.c | 240 +++++++++++++++-- > > fs/nfs/nfstrace.c | 5 + > > fs/nfs/nfstrace.h | 9 +- > > fs/nfs/proc.c | 1 + > > include/linux/nfs4.h | 1 + > > include/linux/nfs_fs.h | 15 ++ > > include/linux/nfs_fs_sb.h | 2 +- > > include/linux/nfs_xdr.h | 80 ++++-- > > include/uapi/linux/nfs.h | 101 +++++++ > > 18 files changed, 1356 insertions(+), 94 deletions(-) > > > > -- > > 2.33.1 -- Trond Myklebust Linux NFS client maintainer, Hammerspace trond.myklebust@xxxxxxxxxxxxxxx Legal Disclaimer: This e-mail communication (and any attachment/s) is confidential and contains proprietary information, some or all of which may be legally privileged. It is intended solely for the use of the individual or entity to which it is addressed. Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful.
