From 0f725500f50f386a19e33b077c7590d75bb276d8 Mon Sep 17 00:00:00 2001 From: Xavier Hernandez Date: Tue, 9 May 2017 19:40:21 +0200 Subject: cluster/ec: correctly handle end of file for seek When a SEEK_HOLE was issued near to the end of file, sometimes an offset beyond the end of file was returned. Another problem was that using some offsets greater than the end of file returned successfully instead of failing with ENXIO. >Change-Id: I238d2884ba02fd19a78116b0f8f8e8d6338fb3f5 >BUG: 1449348 >Signed-off-by: Xavier Hernandez >Reviewed-on: https://review.gluster.org/17228 >Smoke: Gluster Build System >NetBSD-regression: NetBSD Build System >CentOS-regression: Gluster Build System >Reviewed-by: Amar Tumballi >Reviewed-by: Pranith Kumar Karampuri >(cherry picked from commit eb96dd45f8e583c6bad84bf32ca17e2bb01dd38f) Change-Id: I238d2884ba02fd19a78116b0f8f8e8d6338fb3f5 BUG: 1468126 Signed-off-by: Xavier Hernandez Reviewed-on: https://review.gluster.org/17711 Reviewed-by: Pranith Kumar Karampuri Tested-by: Pranith Kumar Karampuri Smoke: Gluster Build System CentOS-regression: Gluster Build System NetBSD-regression: NetBSD Build System --- tests/basic/ec/ec-seek.t | 57 +++++++++++++++ tests/basic/ec/seek.c | 185 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 242 insertions(+) create mode 100644 tests/basic/ec/ec-seek.t create mode 100644 tests/basic/ec/seek.c (limited to 'tests') diff --git a/tests/basic/ec/ec-seek.t b/tests/basic/ec/ec-seek.t new file mode 100644 index 00000000000..6a0060870c8 --- /dev/null +++ b/tests/basic/ec/ec-seek.t @@ -0,0 +1,57 @@ +#!/bin/bash + +. $(dirname $0)/../../include.rc +. $(dirname $0)/../../volume.rc + +cleanup + +SEEK=$(dirname $0)/seek +build_tester $(dirname $0)/seek.c -o ${SEEK} + +TEST glusterd +TEST pidof glusterd +TEST $CLI volume info + +TEST mkdir -p $B0/${V0}{0..2} +TEST $CLI volume create $V0 disperse 3 redundancy 1 $H0:$B0/${V0}{0..2} + +EXPECT "$V0" volinfo_field $V0 'Volume Name' +EXPECT 'Created' volinfo_field $V0 'Status' +EXPECT '3' brick_count $V0 + +TEST $CLI volume start $V0 +EXPECT_WITHIN $PROCESS_UP_TIMEOUT 'Started' volinfo_field $V0 'Status' + +TEST $GFS -s $H0 --volfile-id $V0 $M0 +EXPECT_WITHIN $CHILD_UP_TIMEOUT "3" ec_child_up_count $V0 0 + +TEST ${SEEK} create ${M0}/test 0 1 1048576 1 +# Determine underlying filesystem allocation block size +BSIZE="$(($(${SEEK} scan ${M0}/test hole 0) * 2))" + +TEST ${SEEK} create ${M0}/test 0 ${BSIZE} $((${BSIZE} * 4 + 512)) ${BSIZE} + +EXPECT "^0$" ${SEEK} scan ${M0}/test data 0 +EXPECT "^$((${BSIZE} / 2))$" ${SEEK} scan ${M0}/test data $((${BSIZE} / 2)) +EXPECT "^$((${BSIZE} - 1))$" ${SEEK} scan ${M0}/test data $((${BSIZE} - 1)) +EXPECT "^$((${BSIZE} * 4))$" ${SEEK} scan ${M0}/test data ${BSIZE} +EXPECT "^$((${BSIZE} * 4))$" ${SEEK} scan ${M0}/test data $((${BSIZE} * 4)) +EXPECT "^$((${BSIZE} * 5))$" ${SEEK} scan ${M0}/test data $((${BSIZE} * 5)) +EXPECT "^$((${BSIZE} * 5 + 511))$" ${SEEK} scan ${M0}/test data $((${BSIZE} * 5 + 511)) +EXPECT "^ENXIO$" ${SEEK} scan ${M0}/test data $((${BSIZE} * 5 + 512)) +EXPECT "^ENXIO$" ${SEEK} scan ${M0}/test data $((${BSIZE} * 6)) + +EXPECT "^${BSIZE}$" ${SEEK} scan ${M0}/test hole 0 +EXPECT "^${BSIZE}$" ${SEEK} scan ${M0}/test hole $((${BSIZE} / 2)) +EXPECT "^${BSIZE}$" ${SEEK} scan ${M0}/test hole $((${BSIZE} - 1)) +EXPECT "^${BSIZE}$" ${SEEK} scan ${M0}/test hole ${BSIZE} +EXPECT "^$((${BSIZE} * 5 + 512))$" ${SEEK} scan ${M0}/test hole $((${BSIZE} * 4)) +EXPECT "^$((${BSIZE} * 5 + 512))$" ${SEEK} scan ${M0}/test hole $((${BSIZE} * 5)) +EXPECT "^$((${BSIZE} * 5 + 512))$" ${SEEK} scan ${M0}/test hole $((${BSIZE} * 5 + 511)) +EXPECT "^ENXIO$" ${SEEK} scan ${M0}/test hole $((${BSIZE} * 5 + 512)) +EXPECT "^ENXIO$" ${SEEK} scan ${M0}/test hole $((${BSIZE} * 6)) + +cleanup + +# Centos6 regression slaves seem to not support SEEK_DATA/SEEK_HOLE +#G_TESTDEF_TEST_STATUS_CENTOS6=BAD_TEST,BUG=000000 diff --git a/tests/basic/ec/seek.c b/tests/basic/ec/seek.c new file mode 100644 index 00000000000..67036ad4e75 --- /dev/null +++ b/tests/basic/ec/seek.c @@ -0,0 +1,185 @@ + +#define _GNU_SOURCE + +#include +#include +#include +#include +#include +#include +#include +#include + +static char buffer[65536]; + +static int +parse_int(const char *text, size_t *value) +{ + char *ptr; + size_t val; + + val = strtoul(text, &ptr, 0); + if (*ptr != 0) { + return 0; + } + + *value = val; + + return 1; +} + +static int +fill_area(int fd, off_t offset, size_t size) +{ + size_t len; + ssize_t res; + + while (size > 0) { + len = sizeof(buffer); + if (len > size) { + len = size; + } + res = pwrite(fd, buffer, len, offset); + if (res < 0) { + fprintf(stderr, + "pwrite(%d, %p, %lu, %lu) failed: %d\n", + fd, buffer, size, offset, errno); + return 0; + } + if (res != len) { + fprintf(stderr, + "pwrite(%d, %p, %lu, %lu) didn't wrote all " + "data: %lu/%lu\n", + fd, buffer, size, offset, res, len); + return 0; + } + offset += len; + size -= len; + } + + return 1; +} + +static void +syntax(void) +{ + fprintf(stderr, "Syntax: seek create [...]\n"); + fprintf(stderr, " seek scan data|hole \n"); +} + +static int +seek_create(const char *path, int argc, char *argv[]) +{ + size_t off, size; + int fd; + int ret = 1; + + fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0644); + if (fd < 0) { + fprintf(stderr, "Failed to create the file\n"); + goto out; + } + + while (argc > 0) { + if (!parse_int(argv[0], &off) || + !parse_int(argv[1], &size)) { + syntax(); + goto out_close; + } + if (!fill_area(fd, off, size)) { + goto out_close; + } + argv += 2; + argc -= 2; + } + + ret = 0; + +out_close: + close(fd); +out: + return ret; +} + +static int +seek_scan(const char *path, const char *type, const char *pos) +{ + size_t off, res; + int fd, whence; + int ret = 1; + + if (strcmp(type, "data") == 0) { + whence = SEEK_DATA; + } else if (strcmp(type, "hole") == 0) { + whence = SEEK_HOLE; + } else { + syntax(); + goto out; + } + + if (!parse_int(pos, &off)) { + syntax(); + goto out; + } + + fd = open(path, O_RDWR); + if (fd < 0) { + fprintf(stderr, "Failed to open the file\n"); + goto out; + } + + res = lseek(fd, off, whence); + if (res == (off_t)-1) { + if (errno != ENXIO) { + fprintf(stderr, "seek(%d, %lu, %d) failed: %d\n", fd, + off, whence, errno); + goto out_close; + } + fprintf(stdout, "ENXIO\n"); + } else { + fprintf(stdout, "%lu\n", res); + } + + ret = 0; + +out_close: + close(fd); +out: + return ret; +} + +int +main(int argc, char *argv[]) +{ + int ret = 1; + + memset(buffer, 0x55, sizeof(buffer)); + + if (argc < 3) { + syntax(); + goto out; + } + + if (strcmp(argv[1], "create") == 0) { + if (((argc - 3) & 1) != 0) { + syntax(); + goto out; + } + ret = seek_create(argv[2], argc - 3, argv + 3); + } else if (strcmp(argv[1], "scan") == 0) { + if (argc != 5) { + syntax(); + goto out; + } + ret = seek_scan(argv[2], argv[3], argv[4]); + } else { + syntax(); + goto out; + } + + ret = 0; + +out: + return ret; +} + -- cgit