From c51eb694bce443ae7c0584b1545c14254569ae49 Mon Sep 17 00:00:00 2001 From: Emmanuel Dreyfus Date: Sun, 7 Jun 2015 21:32:32 +0200 Subject: Tests portability: umount(8) 1) Avoid hangs on unmounting NFS on NetBSD NetBSD umount(8) on a NFS mount whose server is gone will wait forever because umount(8) calls realpath(3) and tries to access the mount before it calls unmount(2). The non-portable, NetBSD-specific umount -R flag prevent that behavior. We therefore introduce UMOUNT_F, defined as "umount -f" on Linux and "umount -f -R" on NetBSD to take care of forced unmounts, especially in the NFS case. 2) Enforce usage of force_umount wrapper with timeout Whenever umount is used it should be wrapped in force_umount with tiemout handling. That saves us timing issues, and it handles the NetBSD NFS case. 3) Cleanup kernel cache flush. We used (cd $M0 && umount $M0 ) as a portable kernel cache flush trick, but it does not flush everything we need on Linux. Introduce a drop_cache() shell function that reverts to previously used echo 3 > /proc/sys/vm/drop_caches on Linux, and keeps (cd $M0 && umount $M0 ) on other systems. BUG: 1129939 Change-Id: Iab1f5a023405f1f7270c42b595573702ca1eb6f3 Signed-off-by: Emmanuel Dreyfus Reviewed-on: http://review.gluster.org/11114 Tested-by: NetBSD Build System Reviewed-by: Kaleb KEITHLEY Tested-by: Gluster Build System Reviewed-by: Vijay Bellur --- tests/bugs/glusterfs/bug-867253.t | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tests/bugs/glusterfs') diff --git a/tests/bugs/glusterfs/bug-867253.t b/tests/bugs/glusterfs/bug-867253.t index aee27c87158..41972a7731b 100644 --- a/tests/bugs/glusterfs/bug-867253.t +++ b/tests/bugs/glusterfs/bug-867253.t @@ -37,7 +37,7 @@ touch $M0/files{1..1000}; # Kill a brick process kill -9 `cat $GLUSTERD_WORKDIR/vols/$V0/run/$H0-d-backends-${V0}0.pid`; -( cd $M0 ; umount $M0 ) # fail but drops kernel cache +drop_cache $M0 ls -l $M0 >/dev/null; @@ -48,7 +48,7 @@ TEST $CLI volume start $V0 force # Kill a brick process kill -9 `cat $GLUSTERD_WORKDIR/vols/$V0/run/$H0-d-backends-${V0}1.pid`; -( cd $M0 ; umount $M0 ) +drop_cache $M0 ls -l $M0 >/dev/null; -- cgit