Date: Wed, 3 Apr 2019 07:22:46 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r345840 - user/pho/stress2/misc Message-ID: <201904030722.x337Mkt6049518@repo.freebsd.org>
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Author: pho Date: Wed Apr 3 07:22:46 2019 New Revision: 345840 URL: https://svnweb.freebsd.org/changeset/base/345840 Log: Added tmpfs to the tested file systems. Added showing file mapping for RW and RO mounts. Sponsored by: Dell EMC Isilon Modified: user/pho/stress2/misc/mountu.sh Modified: user/pho/stress2/misc/mountu.sh ============================================================================== --- user/pho/stress2/misc/mountu.sh Wed Apr 3 07:09:28 2019 (r345839) +++ user/pho/stress2/misc/mountu.sh Wed Apr 3 07:22:46 2019 (r345840) @@ -1,9 +1,10 @@ #!/bin/sh # -# Copyright (c) 2012 Peter Holm <pho@FreeBSD.org> -# All rights reserved. +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD # +# Copyright (c) 2019 Dell EMC Isilon +# # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: @@ -42,95 +43,198 @@ here=`pwd` cd /tmp sed '1,/^EOF/d' < $here/$0 > mountu.c -mycc -o mountu -Wall -Wextra -O2 mountu.c +mycc -o mountu -Wall -Wextra -O2 mountu.c || exit 1 rm -f mountu.c pstat() { - pid=`ps a | grep -v grep | grep /tmp/mountu | awk '{print $1}'` + local pid + pid=`ps ax | grep -v grep | grep /tmp/mountu | awk '{print $1}'` [ -n "$pid" ] && procstat -v $pid } +ck() { + if mount | grep $mntpoint | grep -q "read-only"; then + if pstat $!| awk "\$2 == \"$map\"" | grep -q " rw-"; then + echo + echo "$1 difference" + mount | grep $mntpoint + printf "RW mount mapping and RO mount mapping:\n%s\n" "$r" + pstat $! | awk "\$2 == \"$map\"" + status=$((status + 1)) + fi + else + echo "$1 mount point RO did not succeed" + mount | grep $mntpoint + status=$((status + 1)) + fi +} + +status=0 +file=$mntpoint/mountu.sh.file +mapfile=/tmp/mountu.sh.map mount | grep -q "$mntpoint " && umount $mntpoint -mdconfig -l | grep -q $mdstart && mdconfig -d -u $mdstart +mdconfig -l | grep -q $mdstart && mdconfig -d -u $mdstart mdconfig -a -t swap -s 100m -u $mdstart -bsdlabel -w md${mdstart} auto -newfs $newfs_flags md${mdstart}${part} > /dev/null -mount /dev/md${mdstart}${part} $mntpoint +bsdlabel -w md$mdstart auto +newfs $newfs_flags md${mdstart}$part > /dev/null +mount /dev/md${mdstart}$part $mntpoint chmod 777 $mntpoint -/tmp/mountu $mntpoint/file & - +# ufs +exec 5>$mapfile +/tmp/mountu UFS $file & +pid=$! sleep 1 -if ! mount -u -o ro $mntpoint 2>&1 | grep -q "Device busy"; then - echo "UFS FAILED" - pstat -fi -wait +map=`cat $mapfile`; rm $mapfile; exec 5>&- + +r=`pstat $! | awk "\\$2 == \"$map\""` +mount -u -o ro $mntpoint 2>/dev/null || mount -fu -o ro $mntpoint +ck UFS +mount -u -o rw $mntpoint +rm -f $file +wait $pid +s=$? +[ $s -ne 139 ] && { echo "UFS exit status is $s"; status=1; } while mount | grep -q "$mntpoint "; do umount $mntpoint || sleep 1 done - mdconfig -d -u $mdstart +# nfs if ping -c 2 `echo $nfs_export | sed 's/:.*//'` > /dev/null 2>&1; then - mount -t nfs -o tcp -o retrycnt=3 -o intr -o soft -o rw $nfs_export \ + mount -t nfs -o tcp -o retrycnt=3 -o intr,soft -o rw $nfs_export \ $mntpoint - rm -f /tmp/file - /tmp/mountu $mntpoint/file & + sleep .2 + rm -f $file + /tmp/mountu NFS $file & + pid=$! sleep 1 - if ! mount -u -o ro $mntpoint 2>&1 | grep -q "Device busy"; then - echo "NFS FAILED" - fi - wait - umount $mntpoint + r=`pstat $! | awk "\\$2 == \"$map\""` + mount -u -o ro $mntpoint 2>/dev/null || + mount -fu -o ro $mntpoint 2>/dev/null + ck NFS + wait $pid + s=$? + [ $s -ne 139 ] && { echo "NFS exit status is $s"; status=1; } + + mount -u -o rw $mntpoint 2>/dev/null + sleep .2 + [ -f $file ] && rm -f $file + umount $mntpoint || umount $mntpoint fi +# msdos if [ -x /sbin/mount_msdosfs ]; then mdconfig -a -t swap -s 100m -u $mdstart - bsdlabel -w md${mdstart} auto + bsdlabel -w md$mdstart auto newfs_msdos -F 16 -b 8192 /dev/md${mdstart}$part > /dev/null 2>&1 mount_msdosfs -m 777 /dev/md${mdstart}$part $mntpoint - /tmp/mountu $mntpoint/file & + /tmp/mountu MSDOS $file & + pid=$! sleep 1 - if ! mount -u -o ro $mntpoint 2>&1 | grep -q "Device busy"; then - echo "MSDOS FAILED" - fi - wait + r=`pstat $! | awk "\\$2 == \"$map\""` + mount -u -o ro $mntpoint 2>/dev/null || mount -fu -o ro $mntpoint + ck MSDOS + wait $pid + s=$? + [ $s -ne 139 ] && { echo "MSDOS exit status is $s"; status=1; } + mount -u -o rw $mntpoint + rm -f $file while mount | grep -q "$mntpoint "; do umount $mntpoint || sleep 1 done + mdconfig -d -u $mdstart fi -rm -f /tmp/mountu /tmp/file + +# tmpfs +mount -t tmpfs null $mntpoint +chmod 777 $mntpoint + +/tmp/mountu TMPFS $file & +pid=$! + +sleep 1 +r=`pstat $! | awk "\\$2 == \"$map\""` +mount -u -o ro $mntpoint 2>/dev/null || mount -fu -o ro $mntpoint +ck TMPFS +sleep 1 +mount -u -o rw $mntpoint +rm -f $file +wait $pid +s=$? +[ $s -ne 139 ] && { echo "TMPFS exit status is $s"; status=1; } +while mount | grep -q "$mntpoint "; do + umount $mntpoint || sleep 1 +done + +rm -f /tmp/mountu exit 0 EOF -#include <sys/types.h> +/* kib@ noted: + UFS/NFS/msdosfs reclaim vnode on rw->ro forced remount, and + change the type of the underying object to OBJT_DEAD, but leave + the pages on the object queue and installed in the page tables. + Applications can read/write already mapped pages, but cannot + page in new pages, cannot observe possible further modifications + to already mapped pages (if ro->rw remount happen later), and + their updates to pages are not flushed to file. + + It is impossible to mimic this behaviour for tmpfs. + */ +#include <sys/param.h> +#include <sys/mman.h> +#include <sys/ucontext.h> + #include <err.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> +#include <errno.h> #include <fcntl.h> #include <pwd.h> -#include <sys/mman.h> -#include <sys/param.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> #include <string.h> #include <unistd.h> -#include <errno.h> #define STARTADDR 0x0U -#define ADRSPACE 0x0640000U +#define ADRSPACE 0x0640000U +static void +sighandler(int signo, siginfo_t *si, void *uc1) +{ + ucontext_t *uc; + + uc = uc1; + printf("SIG%s at %p, addr %p\n", sys_signame[signo], si->si_addr, +#if defined(__i386__) + (void *)uc->uc_mcontext.mc_eip); +#else + (void *)uc->uc_mcontext.mc_rip); +#endif + exit(1); +} + int main(int argc __unused, char **argv) { - int fd, ps; + struct passwd *pw; + struct sigaction sa; void *p; size_t len; - struct passwd *pw; - char *c, *path; + int fd; + char *name, *path; + volatile char *c; + memset(&sa, 0, sizeof(sa)); + sa.sa_sigaction = sighandler; + sa.sa_flags = SA_SIGINFO; + if (sigaction(SIGSEGV, &sa, NULL) == -1) + err(1, "sigaction(SIGSEGV)"); + if (sigaction(SIGBUS, &sa, NULL) == -1) + err(1, "sigaction(SIGBUS)"); + if ((pw = getpwnam("nobody")) == NULL) err(1, "no such user: nobody"); @@ -143,7 +247,8 @@ main(int argc __unused, char **argv) p = (void *)STARTADDR; len = ADRSPACE; - path = argv[1]; + name = argv[1]; + path = argv[2]; if ((fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0622)) == -1) err(1,"open(%s)", path); if (ftruncate(fd, len) == -1) @@ -156,15 +261,25 @@ main(int argc __unused, char **argv) } err(1, "mmap(1)"); } + dprintf(5, "%p\n", p); - c = p; - ps = getpagesize(); - for (c = p; (void *)c < p + len; c += ps) { + for (c = p; (void *)c < p + len; c += PAGE_SIZE) { *c = 1; } close(fd); sleep(5); + fprintf(stderr, "%s: Late read start.\n", name); + for (c = p; (void *)c < p + len; c += PAGE_SIZE) { + *c = 1; + } + fprintf(stderr, "%s: Late read complete.\n", name); + + fprintf(stderr, "%s: Late write start.\n", name); + for (c = p; (void *)c < p + len; c += PAGE_SIZE) { + *c = 1; + } + fprintf(stderr, "%s: Late write complete.\n", name); return (0); }
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