minus the vendor Makefiles Provide directions for how to bootstrap the vendor sources in FREEBSD-upgrade MFC after 2 weeks Discussed with: rpaulo Sponsored by: EMC / Isilon Storage Division
229 lines
5.2 KiB
C
229 lines
5.2 KiB
C
/* $NetBSD: snapshot.c,v 1.7 2013/02/06 09:05:01 hannken Exp $ */
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <dev/fssvar.h>
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#include <atf-c.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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ATF_TC_WITH_CLEANUP(snapshot);
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ATF_TC_HEAD(snapshot, tc)
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{
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atf_tc_set_md_var(tc, "descr", "basic snapshot features");
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}
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static void
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makefile(const char *path)
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{
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int fd;
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fd = rump_sys_open(path, O_CREAT | O_RDWR, 0777);
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if (fd == -1)
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atf_tc_fail_errno("create %s", path);
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rump_sys_close(fd);
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}
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ATF_TC_BODY(snapshot, tc)
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{
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char buf[1024];
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struct fss_set fss;
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int fssfd;
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int fd, fd2, i;
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if (system(NEWFS) == -1)
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atf_tc_fail_errno("cannot create file system");
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rump_init();
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begin();
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if (rump_sys_mkdir("/mnt", 0777) == -1)
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atf_tc_fail_errno("mount point create");
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if (rump_sys_mkdir("/snap", 0777) == -1)
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atf_tc_fail_errno("mount point 2 create");
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rump_pub_etfs_register("/diskdev", IMGNAME, RUMP_ETFS_BLK);
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mount_diskfs("/diskdev", "/mnt");
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#define TESTSTR1 "huihai\n"
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#define TESTSZ1 (sizeof(TESTSTR1)-1)
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#define TESTSTR2 "baana liten\n"
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#define TESTSZ2 (sizeof(TESTSTR2)-1)
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fd = rump_sys_open("/mnt/myfile", O_RDWR | O_CREAT, 0777);
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if (fd == -1)
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atf_tc_fail_errno("create file");
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if (rump_sys_write(fd, TESTSTR1, TESTSZ1) != TESTSZ1)
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atf_tc_fail_errno("write fail");
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fssfd = rump_sys_open("/dev/rfss0", O_RDWR);
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if (fssfd == -1)
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atf_tc_fail_errno("cannot open fss");
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makefile(BAKNAME);
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memset(&fss, 0, sizeof(fss));
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fss.fss_mount = __UNCONST("/mnt");
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fss.fss_bstore = __UNCONST(BAKNAME);
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fss.fss_csize = 0;
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if (rump_sys_ioctl(fssfd, FSSIOCSET, &fss) == -1)
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atf_tc_fail_errno("create snapshot");
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for (i = 0; i < 10000; i++) {
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if (rump_sys_write(fd, TESTSTR2, TESTSZ2) != TESTSZ2)
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atf_tc_fail_errno("write fail");
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}
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rump_sys_sync();
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/* technically we should fsck it first? */
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mount_diskfs("/dev/fss0", "/snap");
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/* check for old contents */
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fd2 = rump_sys_open("/snap/myfile", O_RDONLY);
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if (fd2 == -1)
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atf_tc_fail_errno("fail");
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memset(buf, 0, sizeof(buf));
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if (rump_sys_read(fd2, buf, sizeof(buf)) == -1)
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atf_tc_fail_errno("read snap");
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ATF_CHECK(strcmp(buf, TESTSTR1) == 0);
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/* check that new files are invisible in the snapshot */
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makefile("/mnt/newfile");
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if (rump_sys_open("/snap/newfile", O_RDONLY) != -1)
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atf_tc_fail("newfile exists in snapshot");
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if (errno != ENOENT)
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atf_tc_fail_errno("newfile open should fail with ENOENT");
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/* check that removed files are still visible in the snapshot */
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rump_sys_unlink("/mnt/myfile");
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if (rump_sys_open("/snap/myfile", O_RDONLY) == -1)
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atf_tc_fail_errno("unlinked file no longer in snapshot");
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/* done for now */
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}
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ATF_TC_CLEANUP(snapshot, tc)
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{
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unlink(IMGNAME);
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}
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ATF_TC_WITH_CLEANUP(snapshotstress);
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ATF_TC_HEAD(snapshotstress, tc)
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{
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atf_tc_set_md_var(tc, "descr", "snapshot on active file system");
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}
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#define NACTIVITY 4
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static bool activity_stop = false;
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static pid_t wrkpid;
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static void *
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fs_activity(void *arg)
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{
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int di, fi;
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char *prefix = arg, path[128];
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rump_pub_lwproc_newlwp(wrkpid);
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RL(rump_sys_mkdir(prefix, 0777));
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while (! activity_stop) {
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for (di = 0; di < 5; di++) {
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snprintf(path, sizeof(path), "%s/d%d", prefix, di);
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RL(rump_sys_mkdir(path, 0777));
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for (fi = 0; fi < 5; fi++) {
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snprintf(path, sizeof(path), "%s/d%d/f%d",
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prefix, di, fi);
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makefile(path);
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}
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}
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for (di = 0; di < 5; di++) {
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for (fi = 0; fi < 5; fi++) {
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snprintf(path, sizeof(path), "%s/d%d/f%d",
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prefix, di, fi);
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RL(rump_sys_unlink(path));
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}
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snprintf(path, sizeof(path), "%s/d%d", prefix, di);
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RL(rump_sys_rmdir(path));
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}
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}
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RL(rump_sys_rmdir(prefix));
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rump_pub_lwproc_releaselwp();
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return NULL;
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}
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ATF_TC_BODY(snapshotstress, tc)
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{
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pthread_t at[NACTIVITY];
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struct fss_set fss;
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char prefix[NACTIVITY][128];
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int i, fssfd;
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if (system(NEWFS) == -1)
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atf_tc_fail_errno("cannot create file system");
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/* Force SMP so the stress makes sense. */
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RL(setenv("RUMP_NCPU", "4", 1));
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RZ(rump_init());
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/* Prepare for fsck to use the RUMP /dev/fss0. */
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RL(rump_init_server("unix://commsock"));
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RL(setenv("LD_PRELOAD", "/usr/lib/librumphijack.so", 1));
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RL(setenv("RUMP_SERVER", "unix://commsock", 1));
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RL(setenv("RUMPHIJACK", "blanket=/dev/rfss0", 1));
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begin();
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RL(rump_sys_mkdir("/mnt", 0777));
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rump_pub_etfs_register("/diskdev", IMGNAME, RUMP_ETFS_BLK);
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mount_diskfs("/diskdev", "/mnt");
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/* Start file system activity. */
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RL(wrkpid = rump_sys_getpid());
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for (i = 0; i < NACTIVITY; i++) {
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snprintf(prefix[i], sizeof(prefix[i]), "/mnt/a%d", i);
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RL(pthread_create(&at[i], NULL, fs_activity, prefix[i]));
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sleep(1);
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}
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fssfd = rump_sys_open("/dev/rfss0", O_RDWR);
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if (fssfd == -1)
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atf_tc_fail_errno("cannot open fss");
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makefile(BAKNAME);
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memset(&fss, 0, sizeof(fss));
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fss.fss_mount = __UNCONST("/mnt");
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fss.fss_bstore = __UNCONST(BAKNAME);
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fss.fss_csize = 0;
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if (rump_sys_ioctl(fssfd, FSSIOCSET, &fss) == -1)
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atf_tc_fail_errno("create snapshot");
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activity_stop = true;
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for (i = 0; i < NACTIVITY; i++)
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RL(pthread_join(at[i], NULL));
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RL(system(FSCK " /dev/rfss0"));
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}
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ATF_TC_CLEANUP(snapshotstress, tc)
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{
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unlink(IMGNAME);
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, snapshot);
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ATF_TP_ADD_TC(tp, snapshotstress);
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return 0;
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}
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