Add some basic tests for inactive/reclaim. To make this possible,
adjust the read/write shovel threads so, that we can tap into the operations between puffs(9) and the file server.
This commit is contained in:
pooka
parent
52a4f7ac75
commit
a436045559
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@ -1,4 +1,4 @@
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# $NetBSD: Makefile,v 1.5 2010/07/07 10:49:51 pooka Exp $
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# $NetBSD: Makefile,v 1.6 2010/07/11 12:26:19 pooka Exp $
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#
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.include <bsd.own.mk>
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@ -14,6 +14,7 @@ LDADD+= -lrumpfs_syspuffs -lrumpvfs_fifofs
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LDADD+= -lrumpnet_local -lrumpnet_net -lrumpnet
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LDADD+= -lrumpvfs
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LDADD+= -lrump -lrumpuser -lpthread
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LDADD+= -lpuffs -lutil
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.include <bsd.test.mk>
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.include <bsd.subdir.mk>
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@ -1,4 +1,4 @@
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/* $NetBSD: t_basic.c,v 1.3 2010/07/07 10:49:51 pooka Exp $ */
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/* $NetBSD: t_basic.c,v 1.4 2010/07/11 12:26:19 pooka Exp $ */
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#include <sys/types.h>
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#include <sys/mount.h>
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@ -11,6 +11,7 @@
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#include <fcntl.h>
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#include <pthread.h>
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#include <puffs.h>
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#include <puffsdump.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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@ -31,12 +32,49 @@ struct puffs_args {
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};
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#define BUFSIZE (64*1024)
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#define DTFS_DUMP "-o","dump"
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struct thefds {
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int rumpfd;
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int servfd;
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};
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int vfs_toserv_ops[PUFFS_VFS_MAX];
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int vn_toserv_ops[PUFFS_VN_MAX];
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/*
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* Do a synchronous operation. When this returns, all FAF operations
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* have at least been delivered to the file system.
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*
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* XXX: is this really good enough considering puffs(9)-issued
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* callback operations?
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*/
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static void
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syncbar(const char *fs)
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{
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struct statvfs svb;
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rump_sys_statvfs1(fs, &svb, ST_WAIT);
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}
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static void
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dumpopcount(void)
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{
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size_t i;
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printf("VFS OPS:\n");
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for (i = 0; i < MIN(puffsdump_vfsop_count, PUFFS_VFS_MAX); i++) {
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printf("\t%s: %d\n",
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puffsdump_vfsop_revmap[i], vfs_toserv_ops[i]);
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}
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printf("VN OPS:\n");
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for (i = 0; i < MIN(puffsdump_vnop_count, PUFFS_VN_MAX); i++) {
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printf("\t%s: %d\n",
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puffsdump_vnop_revmap[i], vn_toserv_ops[i]);
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}
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}
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/*
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* Threads which shovel data between comfd and /dev/puffs.
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* (cannot use polling since fd's are in different namespaces)
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@ -44,6 +82,8 @@ struct thefds {
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static void *
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readshovel(void *arg)
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{
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struct putter_hdr *phdr;
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struct puffs_req *preq;
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struct thefds *fds = arg;
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char buf[BUFSIZE];
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ssize_t n;
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@ -52,25 +92,37 @@ readshovel(void *arg)
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comfd = fds->servfd;
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puffsfd = fds->rumpfd;
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phdr = (void *)buf;
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preq = (void *)buf;
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/* use static thread id */
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rump_pub_lwp_alloc_and_switch(0, 0);
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rump_pub_lwp_alloc_and_switch(0, 10);
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for (;;) {
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ssize_t n, n2;
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n = rump_sys_read(puffsfd, buf, BUFSIZE);
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if (n <= 0) {
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n = rump_sys_read(puffsfd, buf, sizeof(*phdr));
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if (n <= 0)
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break;
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assert(phdr->pth_framelen < BUFSIZE);
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n = rump_sys_read(puffsfd, buf+sizeof(*phdr),
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phdr->pth_framelen - sizeof(*phdr));
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if (n <= 0)
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break;
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/* Analyze request */
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if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VFS) {
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assert(preq->preq_optype < PUFFS_VFS_MAX);
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vfs_toserv_ops[preq->preq_optype]++;
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} else if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VN) {
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assert(preq->preq_optype < PUFFS_VN_MAX);
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vn_toserv_ops[preq->preq_optype]++;
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}
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while (n) {
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n2 = write(comfd, buf, n);
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if (n2 == -1)
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err(1, "readshovel failed write: %d");
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if (n2 == 0)
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n = phdr->pth_framelen;
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if (write(comfd, buf, n) != n)
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break;
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n -= n2;
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}
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}
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return NULL;
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@ -86,7 +138,7 @@ writeshovel(void *arg)
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int error, comfd, puffsfd;
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/* use static thread id */
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rump_pub_lwp_alloc_and_switch(0, 0);
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rump_pub_lwp_alloc_and_switch(0, 11);
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comfd = fds->servfd;
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puffsfd = fds->rumpfd;
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@ -103,6 +155,7 @@ writeshovel(void *arg)
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*/
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off = 0;
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toread = sizeof(struct putter_hdr);
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assert(toread < BUFSIZE);
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do {
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n = read(comfd, buf+off, toread);
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if (n <= 0) {
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@ -117,10 +170,9 @@ writeshovel(void *arg)
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n = rump_sys_write(puffsfd, buf, phdr->pth_framelen);
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if (n != phdr->pth_framelen)
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goto out;
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break;
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}
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out:
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return NULL;
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}
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@ -438,6 +490,179 @@ ATF_TC_BODY(root_chrdev, tc)
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atf_tc_fail_errno("unmount");
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}
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/*
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* Inactive/reclaim tests
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*/
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ATF_TC(inactive_basic);
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ATF_TC_HEAD(inactive_basic, tc)
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{
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atf_tc_set_md_var(tc, "descr", "inactive gets called");
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}
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ATF_TC_BODY(inactive_basic, tc)
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{
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char *myopts[] = {
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"-i",
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"dtfs",
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};
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int fd;
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dtfsmountv("/mp", myopts);
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fd = rump_sys_open("/mp/file", O_CREAT | O_RDWR, 0777);
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if (fd == -1)
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atf_tc_fail_errno("create");
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/* one for /mp */
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_INACTIVE], 1);
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rump_sys_close(fd);
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/* one for /mp/file */
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_INACTIVE], 2);
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if (rump_sys_unmount("/mp", 0) == -1)
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atf_tc_fail_errno("unmount");
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/* one for /mp again */
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_INACTIVE], 3);
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}
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ATF_TC(inactive_reclaim);
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ATF_TC_HEAD(inactive_reclaim, tc)
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{
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atf_tc_set_md_var(tc, "descr", "inactive/reclaim gets called");
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}
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ATF_TC_BODY(inactive_reclaim, tc)
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{
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char *myopts[] = {
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"-i",
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"dtfs",
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};
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int fd;
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dtfsmountv("/mp", myopts);
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fd = rump_sys_open("/mp/file", O_CREAT | O_RDWR, 0777);
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if (fd == -1)
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atf_tc_fail_errno("create");
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_INACTIVE], 1);
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if (rump_sys_unlink("/mp/file") == -1)
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atf_tc_fail_errno("remove");
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_INACTIVE], 2);
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_RECLAIM], 0);
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rump_sys_close(fd);
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syncbar("/mp");
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_INACTIVE], 4);
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_RECLAIM], 1);
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if (rump_sys_unmount("/mp", 0) == -1)
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atf_tc_fail_errno("unmount");
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}
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ATF_TC(reclaim_hardlink);
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ATF_TC_HEAD(reclaim_hardlink, tc)
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{
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atf_tc_set_md_var(tc, "descr", "reclaim gets called only after "
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"final link is gone");
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}
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ATF_TC_BODY(reclaim_hardlink, tc)
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{
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char *myopts[] = {
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"-i",
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"dtfs",
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};
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int fd;
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int ianow;
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dtfsmountv("/mp", myopts);
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fd = rump_sys_open("/mp/file", O_CREAT | O_RDWR, 0777);
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if (fd == -1)
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atf_tc_fail_errno("create");
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if (rump_sys_link("/mp/file", "/mp/anotherfile") == -1)
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atf_tc_fail_errno("create link");
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rump_sys_close(fd);
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_RECLAIM], 0);
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/* unlink first hardlink */
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if (rump_sys_unlink("/mp/file") == -1)
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atf_tc_fail_errno("unlink 1");
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_RECLAIM], 0);
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ianow = vn_toserv_ops[PUFFS_VN_INACTIVE];
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/* unlink second hardlink */
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if (rump_sys_unlink("/mp/anotherfile") == -1)
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atf_tc_fail_errno("unlink 2");
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syncbar("/mp");
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ATF_REQUIRE(ianow < vn_toserv_ops[PUFFS_VN_INACTIVE]);
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_RECLAIM], 1);
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if (rump_sys_unmount("/mp", 0) == -1)
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atf_tc_fail_errno("unmount");
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}
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ATF_TC(unlink_accessible);
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ATF_TC_HEAD(unlink_accessible, tc)
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{
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atf_tc_set_md_var(tc, "descr", "open file is accessible after "
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"having been unlinked");
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}
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ATF_TC_BODY(unlink_accessible, tc)
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{
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char *myopts[] = {
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"-i",
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"-o","nopagecache",
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"dtfs",
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};
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char buf[512];
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int fd, ianow;
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assert(sizeof(buf) > sizeof(MAGICSTR));
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dtfsmountv("/mp", myopts);
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fd = rump_sys_open("/mp/file", O_CREAT | O_RDWR, 0777);
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if (fd == -1)
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atf_tc_fail_errno("create");
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if (rump_sys_write(fd, MAGICSTR, sizeof(MAGICSTR)) != sizeof(MAGICSTR))
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atf_tc_fail_errno("write");
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if (rump_sys_unlink("/mp/file") == -1)
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atf_tc_fail_errno("unlink");
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_RECLAIM], 0);
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ianow = vn_toserv_ops[PUFFS_VN_INACTIVE];
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if (rump_sys_pread(fd, buf, sizeof(buf), 0) == -1)
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atf_tc_fail_errno("read");
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rump_sys_close(fd);
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syncbar("/mp");
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_RECLAIM], 1);
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ATF_REQUIRE_EQ(vn_toserv_ops[PUFFS_VN_INACTIVE], ianow+2);
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ATF_REQUIRE_STREQ(buf, MAGICSTR);
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if (rump_sys_unmount("/mp", 0) == -1)
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atf_tc_fail_errno("unmount");
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}
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ATF_TP_ADD_TCS(tp)
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{
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@ -448,5 +673,10 @@ ATF_TP_ADD_TCS(tp)
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ATF_TP_ADD_TC(tp, root_reg);
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ATF_TP_ADD_TC(tp, root_chrdev);
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ATF_TP_ADD_TC(tp, inactive_basic);
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ATF_TP_ADD_TC(tp, inactive_reclaim);
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ATF_TP_ADD_TC(tp, reclaim_hardlink);
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ATF_TP_ADD_TC(tp, unlink_accessible);
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return atf_no_error();
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}
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