static int mdd_changelog_users_seq_show(struct seq_file *m, void *data)
{
struct lu_env env;
struct mdd_device *mdd = m->private;
struct llog_ctxt *ctxt;
__u64 cur;
int rc;
ctxt = llog_get_context(mdd2obd_dev(mdd),
LLOG_CHANGELOG_USER_ORIG_CTXT);
if (ctxt == NULL)
return -ENXIO;
LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
rc = lu_env_init(&env, LCT_LOCAL);
if (rc) {
llog_ctxt_put(ctxt);
return rc;
}
spin_lock(&mdd->mdd_cl.mc_lock);
cur = mdd->mdd_cl.mc_index;
spin_unlock(&mdd->mdd_cl.mc_lock);
seq_printf(m, "current index: %llu\n", cur);
seq_printf(m, "%-5s %s\n", "ID", "index");
llog_cat_process(&env, ctxt->loc_handle, lprocfs_changelog_users_cb,
m, 0, 0);
lu_env_fini(&env);
llog_ctxt_put(ctxt);
return 0;
}
static int mdd_changelog_user_purge(const struct lu_env *env,
struct mdd_device *mdd, int id,
long long endrec)
{
struct mdd_changelog_user_data data;
struct llog_ctxt *ctxt;
int rc;
ENTRY;
CDEBUG(D_IOCTL, "Purge request: id=%d, endrec=%lld\n", id, endrec);
data.mcud_id = id;
data.mcud_minid = 0;
data.mcud_minrec = 0;
data.mcud_usercount = 0;
data.mcud_endrec = endrec;
spin_lock(&mdd->mdd_cl.mc_lock);
endrec = mdd->mdd_cl.mc_index;
spin_unlock(&mdd->mdd_cl.mc_lock);
if ((data.mcud_endrec == 0) ||
((data.mcud_endrec > endrec) &&
(data.mcud_endrec != MCUD_UNREGISTER)))
data.mcud_endrec = endrec;
ctxt = llog_get_context(mdd2obd_dev(mdd),
LLOG_CHANGELOG_USER_ORIG_CTXT);
if (ctxt == NULL)
return -ENXIO;
LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
rc = llog_cat_process(env, ctxt->loc_handle,
mdd_changelog_user_purge_cb, (void *)&data,
0, 0);
if ((rc >= 0) && (data.mcud_minrec > 0)) {
CDEBUG(D_IOCTL, "Purging changelog entries up to "LPD64
", referenced by "CHANGELOG_USER_PREFIX"%d\n",
data.mcud_minrec, data.mcud_minid);
rc = mdd_changelog_llog_cancel(env, mdd, data.mcud_minrec);
} else {
CWARN("Could not determine changelog records to purge; rc=%d\n",
rc);
}
llog_ctxt_put(ctxt);
if (!data.mcud_found) {
CWARN("No entry for user %d. Last changelog reference is "
LPD64" by changelog user %d\n", data.mcud_id,
data.mcud_minrec, data.mcud_minid);
rc = -ENOENT;
}
if (!rc && data.mcud_usercount == 0)
/* No more users; turn changelogs off */
rc = mdd_changelog_on(env, mdd, 0);
RETURN (rc);
}
static int lprocfs_rd_changelog_users(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
struct lu_env env;
struct mdd_device *mdd = data;
struct llog_ctxt *ctxt;
struct cucb_data cucb;
__u64 cur;
int rc;
*eof = 1;
ctxt = llog_get_context(mdd2obd_dev(mdd),
LLOG_CHANGELOG_USER_ORIG_CTXT);
if (ctxt == NULL)
return -ENXIO;
LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
rc = lu_env_init(&env, LCT_LOCAL);
if (rc) {
llog_ctxt_put(ctxt);
return rc;
}
spin_lock(&mdd->mdd_cl.mc_lock);
cur = mdd->mdd_cl.mc_index;
spin_unlock(&mdd->mdd_cl.mc_lock);
cucb.count = count;
cucb.page = page;
cucb.idx = 0;
cucb.idx += snprintf(cucb.page + cucb.idx, cucb.count - cucb.idx,
"current index: "LPU64"\n", cur);
cucb.idx += snprintf(cucb.page + cucb.idx, cucb.count - cucb.idx,
"%-5s %s\n", "ID", "index");
llog_cat_process(&env, ctxt->loc_handle, lprocfs_changelog_users_cb,
&cucb, 0, 0);
lu_env_fini(&env);
llog_ctxt_put(ctxt);
return cucb.idx;
}
static int llog_changelog_cancel(struct llog_ctxt *ctxt,
struct lov_stripe_md *lsm, int count,
struct llog_cookie *cookies, int flags)
{
struct llog_handle *cathandle = ctxt->loc_handle;
int rc;
ENTRY;
/* This should only be called with the catalog handle */
LASSERT(cathandle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
rc = llog_cat_process(cathandle, llog_changelog_cancel_cb,
(void *)cookies, 0, 0);
if (rc >= 0)
/* 0 or 1 means we're done */
rc = 0;
else
CERROR("cancel idx %u of catalog "LPX64" rc=%d\n",
cathandle->lgh_last_idx, cathandle->lgh_id.lgl_oid, rc);
RETURN(rc);
}
static int llog_changelog_cancel(const struct lu_env *env,
struct llog_ctxt *ctxt,
struct llog_cookie *cookies, int flags)
{
struct llog_handle *cathandle = ctxt->loc_handle;
int rc;
ENTRY;
/* This should only be called with the catalog handle */
LASSERT(cathandle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
rc = llog_cat_process(env, cathandle, llog_changelog_cancel_cb,
(void *)cookies, 0, 0);
if (rc >= 0)
/* 0 or 1 means we're done */
rc = 0;
else
CERROR("%s: cancel idx %u of catalog "DOSTID" rc=%d\n",
ctxt->loc_obd->obd_name, cathandle->lgh_last_idx,
POSTID(&cathandle->lgh_id.lgl_oi), rc);
RETURN(rc);
}
/* Test log and catalogue processing */
static int llog_test_5(const struct lu_env *env, struct obd_device *obd)
{
struct llog_handle *llh = NULL;
char name[10];
int rc, rc2;
struct llog_mini_rec lmr;
struct llog_ctxt *ctxt;
ctxt = llog_get_context(obd, LLOG_TEST_ORIG_CTXT);
LASSERT(ctxt);
lmr.lmr_hdr.lrh_len = lmr.lmr_tail.lrt_len = LLOG_MIN_REC_SIZE;
lmr.lmr_hdr.lrh_type = 0xf00f00;
CWARN("5a: re-open catalog by id\n");
rc = llog_open(env, ctxt, &llh, &cat_logid, NULL, LLOG_OPEN_EXISTS);
if (rc) {
CERROR("5a: llog_create with logid failed: %d\n", rc);
GOTO(out_put, rc);
}
rc = llog_init_handle(env, llh, LLOG_F_IS_CAT, &uuid);
if (rc) {
CERROR("5a: can't init llog handle: %d\n", rc);
GOTO(out, rc);
}
CWARN("5b: print the catalog entries.. we expect 2\n");
cat_counter = 0;
rc = llog_process(env, llh, cat_print_cb, "test 5", NULL);
if (rc) {
CERROR("5b: process with cat_print_cb failed: %d\n", rc);
GOTO(out, rc);
}
if (cat_counter != 2) {
CERROR("5b: %d entries in catalog\n", cat_counter);
GOTO(out, rc = -EINVAL);
}
CWARN("5c: Cancel %d records, see one log zapped\n", LLOG_TEST_RECNUM);
cancel_count = 0;
rc = llog_cat_process(env, llh, llog_cancel_rec_cb, "foobar", 0, 0);
if (rc != -LLOG_EEMPTY) {
CERROR("5c: process with cat_cancel_cb failed: %d\n", rc);
GOTO(out, rc);
}
CWARN("5c: print the catalog entries.. we expect 1\n");
cat_counter = 0;
rc = llog_process(env, llh, cat_print_cb, "test 5", NULL);
if (rc) {
CERROR("5c: process with cat_print_cb failed: %d\n", rc);
GOTO(out, rc);
}
if (cat_counter != 1) {
CERROR("5c: %d entries in catalog\n", cat_counter);
GOTO(out, rc = -EINVAL);
}
CWARN("5d: add 1 record to the log with many canceled empty pages\n");
rc = llog_cat_add(env, llh, &lmr.lmr_hdr, NULL, NULL);
if (rc) {
CERROR("5d: add record to the log with many canceled empty "
"pages failed\n");
GOTO(out, rc);
}
CWARN("5e: print plain log entries.. expect 6\n");
plain_counter = 0;
rc = llog_cat_process(env, llh, plain_print_cb, "foobar", 0, 0);
if (rc) {
CERROR("5e: process with plain_print_cb failed: %d\n", rc);
GOTO(out, rc);
}
if (plain_counter != 6) {
CERROR("5e: found %d records\n", plain_counter);
GOTO(out, rc = -EINVAL);
}
CWARN("5f: print plain log entries reversely.. expect 6\n");
plain_counter = 0;
rc = llog_cat_reverse_process(env, llh, plain_print_cb, "foobar");
if (rc) {
CERROR("5f: reversely process with plain_print_cb failed:"
"%d\n", rc);
GOTO(out, rc);
}
if (plain_counter != 6) {
CERROR("5f: found %d records\n", plain_counter);
GOTO(out, rc = -EINVAL);
}
out:
CWARN("5g: close re-opened catalog\n");
rc2 = llog_cat_close(env, llh);
if (rc2) {
CERROR("5g: close log %s failed: %d\n", name, rc2);
if (rc == 0)
rc = rc2;
}
out_put:
llog_ctxt_put(ctxt);
return rc;
}
/* Test log and catalogue processing */
static int llog_test_5(struct obd_device *obd)
{
struct llog_handle *llh = NULL;
char name[10];
int rc;
struct llog_mini_rec lmr;
struct llog_ctxt *ctxt = llog_get_context(obd, LLOG_TEST_ORIG_CTXT);
ENTRY;
lmr.lmr_hdr.lrh_len = lmr.lmr_tail.lrt_len = LLOG_MIN_REC_SIZE;
lmr.lmr_hdr.lrh_type = 0xf00f00;
CWARN("5a: re-open catalog by id\n");
rc = llog_create(ctxt, &llh, &cat_logid, NULL);
if (rc) {
CERROR("5a: llog_create with logid failed: %d\n", rc);
GOTO(out, rc);
}
llog_init_handle(llh, LLOG_F_IS_CAT, &uuid);
CWARN("5b: print the catalog entries.. we expect 2\n");
rc = llog_process(llh, cat_print_cb, "test 5", NULL);
if (rc) {
CERROR("5b: process with cat_print_cb failed: %d\n", rc);
GOTO(out, rc);
}
CWARN("5c: Cancel 40000 records, see one log zapped\n");
rc = llog_cat_process(llh, llog_cancel_rec_cb, "foobar", 0, 0);
if (rc != -4711) {
CERROR("5c: process with cat_cancel_cb failed: %d\n", rc);
GOTO(out, rc);
}
CWARN("5d: add 1 record to the log with many canceled empty pages\n");
rc = llog_cat_add_rec(llh, &lmr.lmr_hdr, NULL, NULL);
if (rc) {
CERROR("5d: add record to the log with many canceled empty\
pages failed\n");
GOTO(out, rc);
}
CWARN("5b: print the catalog entries.. we expect 1\n");
rc = llog_process(llh, cat_print_cb, "test 5", NULL);
if (rc) {
CERROR("5b: process with cat_print_cb failed: %d\n", rc);
GOTO(out, rc);
}
CWARN("5e: print plain log entries.. expect 6\n");
rc = llog_cat_process(llh, plain_print_cb, "foobar", 0, 0);
if (rc) {
CERROR("5e: process with plain_print_cb failed: %d\n", rc);
GOTO(out, rc);
}
CWARN("5f: print plain log entries reversely.. expect 6\n");
rc = llog_cat_reverse_process(llh, plain_print_cb, "foobar");
if (rc) {
CERROR("5f: reversely process with plain_print_cb failed: %d\n", rc);
GOTO(out, rc);
}
out:
CWARN("5: close re-opened catalog\n");
if (llh)
rc = llog_cat_put(llh);
if (rc)
CERROR("1b: close log %s failed: %d\n", name, rc);
llog_ctxt_put(ctxt);
RETURN(rc);
}
static int llog_test_8(const struct lu_env *env, struct obd_device *obd)
{
struct llog_handle *llh = NULL;
char name[10];
int rc, rc2, i;
int orig_counter;
struct llog_mini_rec lmr;
struct llog_ctxt *ctxt;
struct dt_object *obj = NULL;
ENTRY;
ctxt = llog_get_context(obd, LLOG_TEST_ORIG_CTXT);
LASSERT(ctxt);
lmr.lmr_hdr.lrh_len = lmr.lmr_tail.lrt_len = LLOG_MIN_REC_SIZE;
lmr.lmr_hdr.lrh_type = 0xf00f00;
CWARN("8a: fill the first plain llog\n");
rc = llog_open(env, ctxt, &llh, &cat_logid, NULL, LLOG_OPEN_EXISTS);
if (rc) {
CERROR("8a: llog_create with logid failed: %d\n", rc);
GOTO(out_put, rc);
}
rc = llog_init_handle(env, llh, LLOG_F_IS_CAT, &uuid);
if (rc) {
CERROR("8a: can't init llog handle: %d\n", rc);
GOTO(out, rc);
}
plain_counter = 0;
rc = llog_cat_process(env, llh, test_8_cb, "foobar", 0, 0);
if (rc != 0) {
CERROR("5a: process with test_8_cb failed: %d\n", rc);
GOTO(out, rc);
}
orig_counter = plain_counter;
for (i = 0; i < 100; i++) {
rc = llog_cat_add(env, llh, &lmr.lmr_hdr, NULL);
if (rc) {
CERROR("5a: add record failed\n");
GOTO(out, rc);
}
}
/* grab the current plain llog, we'll corrupt it later */
obj = llh->u.chd.chd_current_log->lgh_obj;
LASSERT(obj);
lu_object_get(&obj->do_lu);
CWARN("8a: pin llog "DFID"\n", PFID(lu_object_fid(&obj->do_lu)));
rc2 = llog_cat_close(env, llh);
if (rc2) {
CERROR("8a: close log %s failed: %d\n", name, rc2);
if (rc == 0)
rc = rc2;
GOTO(out_put, rc);
}
CWARN("8b: fill the second plain llog\n");
rc = llog_open(env, ctxt, &llh, &cat_logid, NULL, LLOG_OPEN_EXISTS);
if (rc) {
CERROR("8b: llog_create with logid failed: %d\n", rc);
GOTO(out_put, rc);
}
rc = llog_init_handle(env, llh, LLOG_F_IS_CAT, &uuid);
if (rc) {
CERROR("8b: can't init llog handle: %d\n", rc);
GOTO(out, rc);
}
for (i = 0; i < 100; i++) {
rc = llog_cat_add(env, llh, &lmr.lmr_hdr, NULL);
if (rc) {
CERROR("8b: add record failed\n");
GOTO(out, rc);
}
}
CWARN("8b: second llog "DFID"\n",
PFID(lu_object_fid(&llh->u.chd.chd_current_log->lgh_obj->do_lu)));
rc2 = llog_cat_close(env, llh);
if (rc2) {
CERROR("8b: close log %s failed: %d\n", name, rc2);
if (rc == 0)
rc = rc2;
GOTO(out_put, rc);
}
CWARN("8c: drop two records from the first plain llog\n");
llog_truncate(env, obj);
CWARN("8d: count survived records\n");
rc = llog_open(env, ctxt, &llh, &cat_logid, NULL, LLOG_OPEN_EXISTS);
if (rc) {
CERROR("8d: llog_create with logid failed: %d\n", rc);
GOTO(out_put, rc);
}
rc = llog_init_handle(env, llh, LLOG_F_IS_CAT, &uuid);
if (rc) {
CERROR("8d: can't init llog handle: %d\n", rc);
GOTO(out, rc);
}
plain_counter = 0;
rc = llog_cat_process(env, llh, test_8_cb, "foobar", 0, 0);
if (rc != 0) {
CERROR("8d: process with test_8_cb failed: %d\n", rc);
GOTO(out, rc);
}
if (orig_counter + 200 - 2 != plain_counter) {
CERROR("found %d records (expected %d)\n", plain_counter,
orig_counter + 200 - 2);
rc = -EIO;
}
out:
CWARN("8d: close re-opened catalog\n");
rc2 = llog_cat_close(env, llh);
if (rc2) {
CERROR("8d: close log %s failed: %d\n", name, rc2);
if (rc == 0)
rc = rc2;
}
out_put:
llog_ctxt_put(ctxt);
if (obj != NULL)
lu_object_put(env, &obj->do_lu);
RETURN(rc);
}
