NFS fcntl(F_SETLK) problem (Linux->MacOSX)

[Yasushi Shinjo]

$B?7>k!wC^GHBg3X>pJs$G$9!#$3$s$K$A$O!#(B

NFS $B$N%m%C%/$NLdBj$,=P$F$$$^$9!#%/%i%$%"%s%H$O!"(BLinux
(RedHat, 2.6.9-42.0.2.ELsmp), $B%5!<%P$O!"(BMacOSX 10.4 Server
$B$G$9!#$&$A$N<c$$<T$,D4$Y$?=j!"%/%i%$%"%s%H$G(B fcntl() $B%7%9%F(B
$B%`%3!<%k$N(B F_SETLK $B$GLdBj$,H/@8$9$k$H$N$3$H$G$7$?!#(Bflock()
$B%7%9%F%`%3!<%k$G$OH/@8$7$^$;$s!#(B

$B$3$NJU$j!"2?$+>pJs$O$J$$$G$7$g$&$+!#(Bflock() $B$G$OLdBj$J$$$H$$(B
$B$&$3$H$+$i!"D>46E*$K2x$7$$$N$O!"(BLinux $B$N(B lockd $B$J$s$@$1$l$I!#(B

NFS $B$O!"(Bv2 $B$G$b(B v3 $B$G$bF1$8$h$&$KLdBj$,H/@8$7$^$9!#(B

lockd $B$NLdBj$@$H$9$k$H!"@N$J$,$i$NLdBj$G!"$J$+$J$+5;=Q$,?J$^(B
$B$J$$$J$"$H$$$&5$$,$7$^$9!#J,;6%"%k%4%j%:%`$GFq$7$$=j$G$O$"$k(B
$B$s$@$1$l$I!"@h?M$,%P%0$C$?=j$G!"8e$N?M$bF1$8$h$&$K%P%0$k$+$C(B
$B$F8@$$$?$$!#(B

$B!@!@!!?7>k!!Lw!!!J$7$s$8$g$&!!$d$9$7!K!!!@!@(B
$B!@!@!!C^GHBg3X!!EE;R!&>pJs!!!!!!!!!!!!!!!@!@(B

[OGAWA KenIchi]

Post by Yasushi Shinjo
NFS $B$N%m%C%/$NLdBj$,=P$F$$$^$9!#%/%i%$%"%s%H$O!"(BLinux
(RedHat, 2.6.9-42.0.2.ELsmp), $B%5!<%P$O!"(BMacOSX 10.4 Server
$B$G$9!#$&$A$N<c$$<T$,D4$Y$?=j!"%/%i%$%"%s%H$G(B fcntl() $B%7%9%F(B

$B!VLdBj!W$H$$$&$N$O$I$&$$$&LdBj$J$N$G$7$g$&$+!)(B

Post by Yasushi Shinjo
$B$3$NJU$j!"2?$+>pJs$O$J$$$G$7$g$&$+!#(B

fcntl$B$G$O$J$/(Bflock$B$N5sF0$J$N$G$9$,!"(B

Linux NFS faq $B$N(B D10
http://nfs.sourceforge.net/#faq_d10

$B$K!"(B

$B!!(Bflock()/BSD locks act only locally on Linux NFS clients prior to
$B!!(B2.6.12.

$B$H$"$k$N$G!"(BLinux$B$N%+!<%M%k(B2.6.9$B$@$H(Bflock$B$O%M%C%H%o!<%/1[$7$G$O%m%C%/(B
$B$G$-$J$$$N$G$O$J$$$+$J$H;W$$$^$9!#(B

[Yasushi Shinjo]

$B?7>k!wC^GHBg3X>pJs$G$9!#$3$s$K$A$O!#(B

Post by OGAWA KenIchi
$B!VLdBj!W$H$$$&$N$O$I$&$$$&LdBj$J$N$G$7$g$&$+!)(B

$B%m%C%/$NLdBj$G$9$,!"6qBNE*$J>I>u$H$7$F$O!"%U%!%$%k$r%m%C%/$7(B
$B$h$&$H$9$k$H8G$^$C$F$7$^$&$H$$$&$3$H$G$9!#%/%i%$%"%s%H$O!"(B
Linux$B!"%5!<%P$O!"(BMacOSX $B$G$9!#(B

Post by OGAWA KenIchi
fcntl$B$G$O$J$/(Bflock$B$N5sF0$J$N$G$9$,!"(B
Linux NFS faq $B$N(B D10
http://nfs.sourceforge.net/#faq_d10
$B!!(Bflock()/BSD locks act only locally on Linux NFS clients prior to
$B!!(B2.6.12.
$B$G$-$J$$$N$G$O$J$$$+$J$H;W$$$^$9!#(B

$B>pJs$"$j$,$H$&$4$6$$$^$9!#(Bflock() $B$O8G$^$i$J$$$@$1$G!"%m%C%/(B
$B$H$7$F$OF/$$$F$$$J$$$H$$$&$3$H$+$b$7$l$^$;$s$M!#(B
fcntl(F_SETLK) $B$KLdBj$,$"$k$+$i$H$$$C$F$M(Bflock() $B$GBeBX$9$k(B
$B$H$$$&$N$O!"4m$J$$$G$9$M!#(B

$B$3$A$i$O!"(BRedHat $B$J$N$G!"(B2.6.9 $B$H$$$$$D$D!"FH<+$K%Q%C%A$rEv(B
$B$F$F$$$k>l9g$O$"$k$N$G$9$1$l$I!##37n$4$m$"$C$?(B Linux NFSv3
$B%/%i%$%"%s%H$N(B find $B$NLdBj$O2r>C$7$F$$$k$_$?$$!##37n$4$m$O!"(B
NFSv3 $B$G(B find $B$,$^$H$b$KF0$+$J$/$F!"$7$g$&$,$J$/$F(B NFSv2 $B$G(B
$BN?$$$G$$$^$7$?!#(B

$B!@!@!!?7>k!!Lw!!!J$7$s$8$g$&!!$d$9$7!K!!!@!@(B
$B!@!@!!C^GHBg3X!!EE;R!&>pJs!!!!!!!!!!!!!!!@!@(B

[Takashi SHIRAI]

$B!!$7$i$$$G$9!#(B

Post by Yasushi Shinjo
$B?7>k!wC^GHBg3X>pJs$G$9!#$3$s$K$A$O!#(B
$B%m%C%/$NLdBj$G$9$,!"6qBNE*$J>I>u$H$7$F$O!"%U%!%$%k$r%m%C%/$7(B
$B$h$&$H$9$k$H8G$^$C$F$7$^$&$H$$$&$3$H$G$9!#%/%i%$%"%s%H$O!"(B
Linux$B!"%5!<%P$O!"(BMacOSX $B$G$9!#(B

$B!!(BLinux $B$N(B NFS $B$O<BAu$,IT40A4$J$3$H$GM-L>$G$9$,!"FC$K(B lockd
$B$O>e<j$/F/$+$J$$$3$H$,B?$$$h$&$G$9!#(B
$B!!Aj<j$,F1$8(B Linux kernel $B$GF1$8(B architecture $B$@$H3d$H0BDj$7(B
$B$F$^$9$,!"$=$l$G$b<:GT$9$k;~$K$O<:GT$9$k$N$G!"$3$H(B Linux $B$K(B
$B4X$7$F$***@N$N(B fcntl() $B$N>o<1$rE,MQ$9$Y$-$+$H!#(B

$B!!0x$_$K!"7P83B'$+$i8@$&$H!"(Bdeadlock $B$9$k;~$K$O!V(Bclient $B?t$,(B
$BB?2a$.!W$H$+2?$H$+EG$$$F$?5$$,$9$k$N$G!"(Bunlock $B$5$l$k$N$rBT(B
$B$C$F$$$k(B client $B$,B?$$$H2?$+$^$:$$$N$+$b!#(B

Post by Yasushi Shinjo
$B$H$7$F$OF/$$$F$$$J$$$H$$$&$3$H$+$b$7$l$^$;$s$M!#(B
fcntl(F_SETLK) $B$KLdBj$,$"$k$+$i$H$$$C$F$M(Bflock() $B$GBeBX$9$k(B
$B$H$$$&$N$O!"4m$J$$$G$9$M!#(B

$B!!(Bglibc $B$r;H$&8B$j$O(B lockf() $B$b(B fcntl() $B$r;H$C$F(B lock $B5!9=$r(B
$B<BAu$7$F$$$k$h$&$K8+$($k$N$G!"(Blockf() $B$KF($2$k$H$$$&2r$b$"$j(B
$B$^$;$s!#(B
$B!!(Bflock() $B$K4X$7$F$O!"(BLinux kernel 2.x $B0J9_$G$OFHN)$N(B system
call $B$J$N$G!"(Bman page $B$N$H$*$j!V(BNFS $B$G;H$($J$$JL$N(B lock $B5!9=!W(B
$B$G$9$,!"(Bkernel 1.x $B$@$H(B fcntl() $B$r;H$&$N$GF1$85!9=$G$9$M!#(B

[Yasushi Shinjo]

$B?7>k!wC^GHBg3X>pJs$G$9!#$3$s$K$A$O!#(B

Post by Takashi SHIRAI
$B!!(BLinux $B$N(B NFS $B$O<BAu$,IT40A4$J$3$H$GM-L>$G$9$,!"FC$K(B lockd
$B$O>e<j$/F/$+$J$$$3$H$,B?$$$h$&$G$9!#(B
$B$F$^$9$,!"$=$l$G$b<:GT$9$k;~$K$O<:GT$9$k$N$G!"$3$H(B Linux $B$K(B

$B<+J,$G%W%m%0%i%`$r=q$/$H$$$&$3$H$J$i!"$=$&$J$N$G$7$g$&!#:#$O!"(B
$BB>?M$,=q$$$?%W%m%0%i%`$,F0$+$J$$$H$$$&OC$J$N$G!#6qBNE*$K!"(B
$B:#:$$C$F$$$k$N$O!"(BUser Mode Linux $B$G$9!#B>$K$b$"$k$N$G$7$g$&!#(B

Post by Takashi SHIRAI
$B!!(Bglibc $B$r;H$&8B$j$O(B lockf() $B$b(B fcntl() $B$r;H$C$F(B lock $B5!9=$r(B
$B<BAu$7$F$$$k$h$&$K8+$($k$N$G!"(Blockf() $B$KF($2$k$H$$$&2r$b$"$j(B
$B$^$;$s!#(B

$B:#$O!"(Bfcntl() $B$,8G$^$k$H$$$&$3$H$J$N$G!"(Blockf() $B$G$b8G$^$k$+(B
$B$b$7$l$^$;$s!#(B

$B!@!@!!?7>k!!Lw!!!J$7$s$8$g$&!!$d$9$7!K!!!@!@(B
$B!@!@!!C^GHBg3X!!EE;R!&>pJs!!!!!!!!!!!!!!!@!@(B