Re: [PATCH v5 09/10] nfsd: handle delegated timestamps in SETATTR

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On Fri, 2024-12-13 at 09:18 -0500, Chuck Lever wrote:
> On 12/13/24 9:14 AM, Jeff Layton wrote:
> > On Thu, 2024-12-12 at 16:06 -0500, Chuck Lever wrote:
> > > On 12/9/24 4:14 PM, Jeff Layton wrote:
> > > > Allow SETATTR to handle delegated timestamps. This patch assumes that
> > > > only the delegation holder has the ability to set the timestamps in this
> > > > way, so we allow this only if the SETATTR stateid refers to a
> > > > *_ATTRS_DELEG delegation.
> > > > 
> > > > Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
> > > > ---
> > > >    fs/nfsd/nfs4proc.c  | 31 ++++++++++++++++++++++++++++---
> > > >    fs/nfsd/nfs4state.c |  2 +-
> > > >    fs/nfsd/nfs4xdr.c   | 20 ++++++++++++++++++++
> > > >    fs/nfsd/nfsd.h      |  5 ++++-
> > > >    4 files changed, 53 insertions(+), 5 deletions(-)
> > > > 
> > > > diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
> > > > index f8a10f90bc7a4b288c20d2733c85f331cc0a8dba..fea171ffed623818c61886b786339b0b73f1053d 100644
> > > > --- a/fs/nfsd/nfs4proc.c
> > > > +++ b/fs/nfsd/nfs4proc.c
> > > > @@ -1135,18 +1135,43 @@ nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
> > > >    		.na_iattr	= &setattr->sa_iattr,
> > > >    		.na_seclabel	= &setattr->sa_label,
> > > >    	};
> > > > +	bool save_no_wcc, deleg_attrs;
> > > > +	struct nfs4_stid *st = NULL;
> > > >    	struct inode *inode;
> > > >    	__be32 status = nfs_ok;
> > > > -	bool save_no_wcc;
> > > >    	int err;
> > > >    
> > > > -	if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
> > > > +	deleg_attrs = setattr->sa_bmval[2] & (FATTR4_WORD2_TIME_DELEG_ACCESS |
> > > > +					      FATTR4_WORD2_TIME_DELEG_MODIFY);
> > > > +
> > > > +	if (deleg_attrs || (setattr->sa_iattr.ia_valid & ATTR_SIZE)) {
> > > > +		int flags = WR_STATE;
> > > > +
> > > > +		if (setattr->sa_bmval[2] & FATTR4_WORD2_TIME_DELEG_ACCESS)
> > > > +			flags |= RD_STATE;
> > > > +
> > > >    		status = nfs4_preprocess_stateid_op(rqstp, cstate,
> > > >    				&cstate->current_fh, &setattr->sa_stateid,
> > > > -				WR_STATE, NULL, NULL);
> > > > +				flags, NULL, &st);
> > > >    		if (status)
> > > >    			return status;
> > > >    	}
> > > > +
> > > > +	if (deleg_attrs) {
> > > > +		status = nfserr_bad_stateid;
> > > > +		if (st->sc_type & SC_TYPE_DELEG) {
> > > > +			struct nfs4_delegation *dp = delegstateid(st);
> > > > +
> > > > +			/* Only for *_ATTRS_DELEG flavors */
> > > > +			if (deleg_attrs_deleg(dp->dl_type))
> > > > +				status = nfs_ok;
> > > > +		}
> > > > +	}
> > > > +	if (st)
> > > > +		nfs4_put_stid(st);
> > > > +	if (status)
> > > > +		return status;
> > > > +
> > > >    	err = fh_want_write(&cstate->current_fh);
> > > >    	if (err)
> > > >    		return nfserrno(err);
> > > > diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> > > > index c882eeba7830b0249ccd74654f81e63b12a30f14..a76e35f86021c5657e31e4fddf08cb5781f01e32 100644
> > > > --- a/fs/nfsd/nfs4state.c
> > > > +++ b/fs/nfsd/nfs4state.c
> > > > @@ -5486,7 +5486,7 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
> > > >    static inline __be32
> > > >    nfs4_check_delegmode(struct nfs4_delegation *dp, int flags)
> > > >    {
> > > > -	if ((flags & WR_STATE) && deleg_is_read(dp->dl_type))
> > > > +	if (!(flags & RD_STATE) && deleg_is_read(dp->dl_type))
> > > >    		return nfserr_openmode;
> > > >    	else
> > > >    		return nfs_ok;
> > > > diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
> > > > index 0561c99b5def2eccf679bf3ea0e5b1a57d5d8374..ce93a31ac5cec75b0f944d288e796e7a73641572 100644
> > > > --- a/fs/nfsd/nfs4xdr.c
> > > > +++ b/fs/nfsd/nfs4xdr.c
> > > > @@ -521,6 +521,26 @@ nfsd4_decode_fattr4(struct nfsd4_compoundargs *argp, u32 *bmval, u32 bmlen,
> > > >    		*umask = mask & S_IRWXUGO;
> > > >    		iattr->ia_valid |= ATTR_MODE;
> > > >    	}
> > > > +	if (bmval[2] & FATTR4_WORD2_TIME_DELEG_ACCESS) {
> > > > +		fattr4_time_deleg_access access;
> > > > +
> > > > +		if (!xdrgen_decode_fattr4_time_deleg_access(argp->xdr, &access))
> > > > +			return nfserr_bad_xdr;
> > > > +		iattr->ia_atime.tv_sec = access.seconds;
> > > > +		iattr->ia_atime.tv_nsec = access.nseconds;
> > > > +		iattr->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET | ATTR_DELEG;
> > > > +	}
> > > > +	if (bmval[2] & FATTR4_WORD2_TIME_DELEG_MODIFY) {
> > > > +		fattr4_time_deleg_modify modify;
> > > > +
> > > > +		if (!xdrgen_decode_fattr4_time_deleg_modify(argp->xdr, &modify))
> > > > +			return nfserr_bad_xdr;
> > > > +		iattr->ia_mtime.tv_sec = modify.seconds;
> > > > +		iattr->ia_mtime.tv_nsec = modify.nseconds;
> > > > +		iattr->ia_ctime.tv_sec = modify.seconds;
> > > > +		iattr->ia_ctime.tv_nsec = modify.seconds;
> > > > +		iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME | ATTR_MTIME_SET | ATTR_DELEG;
> > > > +	}
> > > >    
> > > >    	/* request sanity: did attrlist4 contain the expected number of words? */
> > > >    	if (attrlist4_count != xdr_stream_pos(argp->xdr) - starting_pos)
> > > > diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
> > > > index 004415651295891b3440f52a4c986e3a668a48cb..f007699aa397fe39042d80ccd568db4654d19dd5 100644
> > > > --- a/fs/nfsd/nfsd.h
> > > > +++ b/fs/nfsd/nfsd.h
> > > > @@ -531,7 +531,10 @@ static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval)
> > > >    #endif
> > > >    #define NFSD_WRITEABLE_ATTRS_WORD2 \
> > > >    	(FATTR4_WORD2_MODE_UMASK \
> > > > -	| MAYBE_FATTR4_WORD2_SECURITY_LABEL)
> > > > +	| MAYBE_FATTR4_WORD2_SECURITY_LABEL \
> > > > +	| FATTR4_WORD2_TIME_DELEG_ACCESS \
> > > > +	| FATTR4_WORD2_TIME_DELEG_MODIFY \
> > > > +	)
> > > >    
> > > >    #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
> > > >    	NFSD_WRITEABLE_ATTRS_WORD0
> > > > 
> > > 
> > > Hi Jeff-
> > > 
> > > After this patch is applied, I see failures of the git regression suite
> > > on NFSv4.2 mounts.
> > > 
> > > Test Summary Report
> > > -------------------
> > > ./t3412-rebase-root.sh                             (Wstat: 256 (exited
> > > 1) Tests: 25 Failed: 5)
> > >     Failed tests:  6, 19, 21-22, 24
> > >     Non-zero exit status: 1
> > > ./t3400-rebase.sh                                  (Wstat: 256 (exited
> > > 1) Tests: 38 Failed: 1)
> > >     Failed test:  31
> > >     Non-zero exit status: 1
> > > ./t3406-rebase-message.sh                          (Wstat: 256 (exited
> > > 1) Tests: 32 Failed: 2)
> > >     Failed tests:  15, 20
> > >     Non-zero exit status: 1
> > > ./t3428-rebase-signoff.sh                          (Wstat: 256 (exited
> > > 1) Tests: 7 Failed: 2)
> > >     Failed tests:  6-7
> > >     Non-zero exit status: 1
> > > ./t3418-rebase-continue.sh                         (Wstat: 256 (exited
> > > 1) Tests: 29 Failed: 1)
> > >     Failed test:  7
> > >     Non-zero exit status: 1
> > > ./t3415-rebase-autosquash.sh                       (Wstat: 256 (exited
> > > 1) Tests: 27 Failed: 2)
> > >     Failed tests:  3-4
> > >     Non-zero exit status: 1
> > > ./t3404-rebase-interactive.sh                      (Wstat: 256 (exited
> > > 1) Tests: 131 Failed: 15)
> > >     Failed tests:  32, 34-43, 45, 121-123
> > >     Non-zero exit status: 1
> > > ./t1013-read-tree-submodule.sh                     (Wstat: 256 (exited
> > > 1) Tests: 68 Failed: 1)
> > >     Failed test:  34
> > >     Non-zero exit status: 1
> > > ./t2013-checkout-submodule.sh                      (Wstat: 256 (exited
> > > 1) Tests: 74 Failed: 4)
> > >     Failed tests:  26-27, 30-31
> > >     Non-zero exit status: 1
> > > ./t5500-fetch-pack.sh                              (Wstat: 256 (exited
> > > 1) Tests: 375 Failed: 1)
> > >     Failed test:  28
> > >     Non-zero exit status: 1
> > > ./t5572-pull-submodule.sh                          (Wstat: 256 (exited
> > > 1) Tests: 67 Failed: 2)
> > >     Failed tests:  5, 7
> > >     Non-zero exit status: 1
> > > Files=1007, Tests=30810, 1417 wallclock secs (11.18 usr 10.17 sys +
> > > 1037.05 cusr 6529.12 csys = 7587.52 CPU)
> > > Result: FAIL
> > > 
> > > The NFS client and NFS server under test are running the same v6.13-rc2
> > > kernel from my git.kernel.org nfsd-testing branch.
> > > 
> > > 
> > 
> > I'm not seeing these failures. I ran the gitr suite under kdevops with
> > your nfsd-testing branch (6.13.0-rc2-ge9a809c5714e):
> > 
> > All tests successful.
> > Files=1007, Tests=30695, 10767 wallclock secs (13.87 usr 16.86 sys + 1160.76 cusr 17870.80 csys = 19062.29 CPU)
> > Result: PASS
> > 
> > ...and looking at the results of those specific tests, they did run and
> > they did pass.
> > 
> > I'm rerunning the tests now. It's possible the underlying fs matters.
> > Mine is exporting xfs. Yours?
> 
> Mine is btrfs, and the NFS version is v4.2 on TCP.
> 
> 

Nope, I still can't reproduce this with btrfs either. I'm also using
v4.2 on TCP. I assume you're running this under kdevops, so we should
have a relatively similar environment.

Are you also testing the same commit?
-- 
Jeff Layton <jlayton@xxxxxxxxxx>





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