-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Wang Di <wangdi@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MDS
#include <linux/module.h>
-#include <linux/jbd.h>
-#include <obd.h>
#include <obd_class.h>
-#include <lustre_ver.h>
-#include <obd_support.h>
-#include <lprocfs_status.h>
-
-#include <linux/ldiskfs_fs.h>
#include <lustre_mds.h>
-#include <lustre/lustre_idl.h>
+#include <obd_support.h>
+#include <lu_object.h>
#include <lustre_param.h>
+#include <lustre_fid.h>
#include "mdd_internal.h"
const struct md_device_operations mdd_ops;
+static struct lu_device_type mdd_device_type;
+
+static const char mdd_root_dir_name[] = "ROOT";
+static const char mdd_obf_dir_name[] = "fid";
+
+/* Slab for MDD object allocation */
+struct kmem_cache *mdd_object_kmem;
+
+static struct lu_kmem_descr mdd_caches[] = {
+ {
+ .ckd_cache = &mdd_object_kmem,
+ .ckd_name = "mdd_obj",
+ .ckd_size = sizeof(struct mdd_object)
+ },
+ {
+ .ckd_cache = NULL
+ }
+};
-static const char *mdd_root_dir_name = "root";
-static int mdd_device_init(const struct lu_env *env, struct lu_device *d,
- const char *name, struct lu_device *next)
+static int mdd_connect_to_next(const struct lu_env *env, struct mdd_device *m,
+ const char *nextdev)
{
- struct mdd_device *mdd = lu2mdd_dev(d);
- int rc;
- ENTRY;
+ struct obd_connect_data *data = NULL;
+ struct lu_device *lud = mdd2lu_dev(m);
+ struct obd_device *obd;
+ int rc;
+ ENTRY;
+
+ LASSERT(m->mdd_child_exp == NULL);
+
+ OBD_ALLOC(data, sizeof(*data));
+ if (data == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ obd = class_name2obd(nextdev);
+ if (obd == NULL) {
+ CERROR("can't locate next device: %s\n", nextdev);
+ GOTO(out, rc = -ENOTCONN);
+ }
+
+ data->ocd_connect_flags = OBD_CONNECT_VERSION;
+ data->ocd_version = LUSTRE_VERSION_CODE;
+
+ rc = obd_connect(NULL, &m->mdd_child_exp, obd, &obd->obd_uuid, data, NULL);
+ if (rc) {
+ CERROR("cannot connect to next dev %s (%d)\n", nextdev, rc);
+ GOTO(out, rc);
+ }
+
+ lud->ld_site = m->mdd_child_exp->exp_obd->obd_lu_dev->ld_site;
+ LASSERT(lud->ld_site);
+ m->mdd_child = lu2dt_dev(m->mdd_child_exp->exp_obd->obd_lu_dev);
+ m->mdd_bottom = lu2dt_dev(lud->ld_site->ls_bottom_dev);
+ lu_dev_add_linkage(lud->ld_site, lud);
+
+out:
+ if (data)
+ OBD_FREE(data, sizeof(*data));
+ RETURN(rc);
+}
+
+static int mdd_init0(const struct lu_env *env, struct mdd_device *mdd,
+ struct lu_device_type *t, struct lustre_cfg *lcfg)
+{
+ int rc;
+ ENTRY;
+
+ mdd->mdd_md_dev.md_lu_dev.ld_ops = &mdd_lu_ops;
+ mdd->mdd_md_dev.md_ops = &mdd_ops;
+
+ rc = mdd_connect_to_next(env, mdd, lustre_cfg_string(lcfg, 3));
+ if (rc)
+ RETURN(rc);
+
+ mdd->mdd_atime_diff = MAX_ATIME_DIFF;
+ /* sync permission changes */
+ mdd->mdd_sync_permission = 1;
- mdd->mdd_child = lu2dt_dev(next);
+ dt_conf_get(env, mdd->mdd_child, &mdd->mdd_dt_conf);
- /* Prepare transactions callbacks. */
- mdd->mdd_txn_cb.dtc_txn_start = mdd_txn_start_cb;
- mdd->mdd_txn_cb.dtc_txn_stop = mdd_txn_stop_cb;
- mdd->mdd_txn_cb.dtc_txn_commit = mdd_txn_commit_cb;
- mdd->mdd_txn_cb.dtc_cookie = mdd;
- CFS_INIT_LIST_HEAD(&mdd->mdd_txn_cb.dtc_linkage);
- mdd->mdd_atime_diff = MAX_ATIME_DIFF;
+ /* we are using service name but not mdd obd name
+ * for compatibility reasons.
+ * It is passed from MDT in lustre_cfg[2] buffer */
+ rc = mdd_procfs_init(mdd, lustre_cfg_string(lcfg, 2));
+ if (rc < 0)
+ obd_disconnect(mdd->mdd_child_exp);
- rc = mdd_procfs_init(mdd, name);
RETURN(rc);
}
struct lu_device *d)
{
struct mdd_device *mdd = lu2mdd_dev(d);
- struct lu_device *next = &mdd->mdd_child->dd_lu_dev;
int rc;
+ if (d->ld_site)
+ lu_dev_del_linkage(d->ld_site, d);
+
rc = mdd_procfs_fini(mdd);
if (rc) {
CERROR("proc fini error %d \n", rc);
return ERR_PTR(rc);
}
- return next;
+ return NULL;
+}
+
+static int changelog_init_cb(const struct lu_env *env, struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct mdd_device *mdd = (struct mdd_device *)data;
+ struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+ LASSERT(rec->cr_hdr.lrh_type == CHANGELOG_REC);
+
+ CDEBUG(D_INFO,
+ "seeing record at index %d/%d/"LPU64" t=%x %.*s in log"
+ DOSTID"\n", hdr->lrh_index, rec->cr_hdr.lrh_index,
+ rec->cr.cr_index, rec->cr.cr_type, rec->cr.cr_namelen,
+ rec->cr.cr_name, POSTID(&llh->lgh_id.lgl_oi));
+
+ mdd->mdd_cl.mc_index = rec->cr.cr_index;
+ return LLOG_PROC_BREAK;
+}
+
+static int changelog_user_init_cb(const struct lu_env *env,
+ struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct mdd_device *mdd = (struct mdd_device *)data;
+ struct llog_changelog_user_rec *rec =
+ (struct llog_changelog_user_rec *)hdr;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+ LASSERT(rec->cur_hdr.lrh_type == CHANGELOG_USER_REC);
+
+ CDEBUG(D_INFO, "seeing user at index %d/%d id=%d endrec="LPU64
+ " in log "DOSTID"\n", hdr->lrh_index, rec->cur_hdr.lrh_index,
+ rec->cur_id, rec->cur_endrec, POSTID(&llh->lgh_id.lgl_oi));
+
+ spin_lock(&mdd->mdd_cl.mc_user_lock);
+ mdd->mdd_cl.mc_lastuser = rec->cur_id;
+ if (rec->cur_endrec > mdd->mdd_cl.mc_index)
+ mdd->mdd_cl.mc_index = rec->cur_endrec;
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+
+ return LLOG_PROC_BREAK;
}
-static int mdd_mount(const struct lu_env *env, struct mdd_device *mdd)
+static int llog_changelog_cancel_cb(const struct lu_env *env,
+ struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
{
+ struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
+ struct llog_cookie cookie;
+ long long endrec = *(long long *)data;
+ int rc;
+
+ ENTRY;
+
+ /* This is always a (sub)log, not the catalog */
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+
+ if (rec->cr.cr_index > endrec)
+ /* records are in order, so we're done */
+ RETURN(LLOG_PROC_BREAK);
+
+ cookie.lgc_lgl = llh->lgh_id;
+ cookie.lgc_index = hdr->lrh_index;
+
+ /* cancel them one at a time. I suppose we could store up the cookies
+ * and cancel them all at once; probably more efficient, but this is
+ * done as a user call, so who cares... */
+ rc = llog_cat_cancel_records(env, llh->u.phd.phd_cat_handle, 1,
+ &cookie);
+ RETURN(rc < 0 ? rc : 0);
+}
+
+static int llog_changelog_cancel(const struct lu_env *env,
+ 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(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);
+}
+
+static struct llog_operations changelog_orig_logops;
+
+int mdd_changelog_on(const struct lu_env *env, struct mdd_device *mdd, int on);
+
+static int mdd_changelog_llog_init(const struct lu_env *env,
+ struct mdd_device *mdd)
+{
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ struct llog_ctxt *ctxt = NULL, *uctxt = NULL;
+ int rc;
+
+ ENTRY;
+
+ /* LU-2844 mdd setup failure should not cause umount oops */
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CHANGELOG_INIT))
+ RETURN(-EIO);
+
+ OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
+ obd->obd_lvfs_ctxt.dt = mdd->mdd_bottom;
+ rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CHANGELOG_ORIG_CTXT,
+ obd, &changelog_orig_logops);
+ if (rc) {
+ CERROR("%s: changelog llog setup failed: rc = %d\n",
+ obd->obd_name, rc);
+ RETURN(rc);
+ }
+
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
+ LASSERT(ctxt);
+
+ rc = llog_open_create(env, ctxt, &ctxt->loc_handle, NULL,
+ CHANGELOG_CATALOG);
+ if (rc)
+ GOTO(out_cleanup, rc);
+
+ rc = llog_cat_init_and_process(env, ctxt->loc_handle);
+ if (rc)
+ GOTO(out_close, rc);
+
+ rc = llog_cat_reverse_process(env, ctxt->loc_handle,
+ changelog_init_cb, mdd);
+
+ if (rc < 0) {
+ CERROR("%s: changelog init failed: rc = %d\n", obd->obd_name,
+ rc);
+ GOTO(out_close, rc);
+ }
+
+ CDEBUG(D_IOCTL, "changelog starting index="LPU64"\n",
+ mdd->mdd_cl.mc_index);
+
+ /* setup user changelog */
+ rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CHANGELOG_USER_ORIG_CTXT,
+ obd, &changelog_orig_logops);
+ if (rc) {
+ CERROR("%s: changelog users llog setup failed: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(out_close, rc);
+ }
+
+ uctxt = llog_get_context(obd, LLOG_CHANGELOG_USER_ORIG_CTXT);
+ LASSERT(ctxt);
+
+ rc = llog_open_create(env, uctxt, &uctxt->loc_handle, NULL,
+ CHANGELOG_USERS);
+ if (rc)
+ GOTO(out_ucleanup, rc);
+
+ uctxt->loc_handle->lgh_logops->lop_add = llog_cat_add_rec;
+ uctxt->loc_handle->lgh_logops->lop_declare_add = llog_cat_declare_add_rec;
+
+ rc = llog_cat_init_and_process(env, uctxt->loc_handle);
+ if (rc)
+ GOTO(out_uclose, rc);
+
+ rc = llog_cat_reverse_process(env, uctxt->loc_handle,
+ changelog_user_init_cb, mdd);
+ if (rc < 0) {
+ CERROR("%s: changelog user init failed: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(out_uclose, rc);
+ }
+
+ /* If we have registered users, assume we want changelogs on */
+ if (mdd->mdd_cl.mc_lastuser > 0) {
+ rc = mdd_changelog_on(env, mdd, 1);
+ if (rc < 0)
+ GOTO(out_uclose, rc);
+ }
+ llog_ctxt_put(ctxt);
+ llog_ctxt_put(uctxt);
+ RETURN(0);
+out_uclose:
+ llog_cat_close(env, uctxt->loc_handle);
+out_ucleanup:
+ llog_cleanup(env, uctxt);
+out_close:
+ llog_cat_close(env, ctxt->loc_handle);
+out_cleanup:
+ llog_cleanup(env, ctxt);
+ return rc;
+}
+
+static int mdd_changelog_init(const struct lu_env *env, struct mdd_device *mdd)
+{
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ int rc;
+
+ mdd->mdd_cl.mc_index = 0;
+ spin_lock_init(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_starttime = cfs_time_current_64();
+ mdd->mdd_cl.mc_flags = 0; /* off by default */
+ mdd->mdd_cl.mc_mask = CHANGELOG_DEFMASK;
+ spin_lock_init(&mdd->mdd_cl.mc_user_lock);
+ mdd->mdd_cl.mc_lastuser = 0;
+
+ rc = mdd_changelog_llog_init(env, mdd);
+ if (rc) {
+ CERROR("%s: changelog setup during init failed: rc = %d\n",
+ obd->obd_name, rc);
+ mdd->mdd_cl.mc_flags |= CLM_ERR;
+ }
+
+ return rc;
+}
+
+static void mdd_changelog_fini(const struct lu_env *env,
+ struct mdd_device *mdd)
+{
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ struct llog_ctxt *ctxt;
+
+ mdd->mdd_cl.mc_flags = 0;
+
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
+ if (ctxt) {
+ llog_cat_close(env, ctxt->loc_handle);
+ llog_cleanup(env, ctxt);
+ }
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt) {
+ llog_cat_close(env, ctxt->loc_handle);
+ llog_cleanup(env, ctxt);
+ }
+}
+
+int mdd_changelog_write_header(const struct lu_env *env,
+ struct mdd_device *mdd, int markerflags);
+
+/* Start / stop recording */
+int mdd_changelog_on(const struct lu_env *env, struct mdd_device *mdd, int on)
+{
+ int rc = 0;
+
+ if ((on == 1) && ((mdd->mdd_cl.mc_flags & CLM_ON) == 0)) {
+ LCONSOLE_INFO("%s: changelog on\n", mdd2obd_dev(mdd)->obd_name);
+ if (mdd->mdd_cl.mc_flags & CLM_ERR) {
+ CERROR("Changelogs cannot be enabled due to error "
+ "condition (see %s log).\n",
+ mdd2obd_dev(mdd)->obd_name);
+ rc = -ESRCH;
+ } else {
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_flags |= CLM_ON;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ rc = mdd_changelog_write_header(env, mdd, CLM_START);
+ }
+ } else if ((on == 0) && ((mdd->mdd_cl.mc_flags & CLM_ON) == CLM_ON)) {
+ LCONSOLE_INFO("%s: changelog off\n",mdd2obd_dev(mdd)->obd_name);
+ rc = mdd_changelog_write_header(env, mdd, CLM_FINI);
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_flags &= ~CLM_ON;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ }
+ return rc;
+}
+
+/** Remove entries with indicies up to and including \a endrec from the
+ * changelog
+ * \param mdd
+ * \param endrec
+ * \retval 0 ok
+ */
+int mdd_changelog_llog_cancel(const struct lu_env *env,
+ struct mdd_device *mdd, long long endrec)
+{
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ struct llog_ctxt *ctxt;
+ long long unsigned cur;
int rc;
- struct dt_object *root;
- ENTRY;
- dt_txn_callback_add(mdd->mdd_child, &mdd->mdd_txn_cb);
- root = dt_store_open(env, mdd->mdd_child, mdd_root_dir_name,
- &mdd->mdd_root_fid);
- if (!IS_ERR(root)) {
- LASSERT(root != NULL);
- lu_object_put(env, &root->do_lu);
- rc = orph_index_init(env, mdd);
- } else
- rc = PTR_ERR(root);
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
+ if (ctxt == NULL)
+ return -ENXIO;
+
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ cur = (long long)mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ if (endrec > cur)
+ endrec = cur;
+
+ /* purge to "0" is shorthand for everything */
+ if (endrec == 0)
+ endrec = cur;
+
+ /* If purging all records, write a header entry so we don't have an
+ empty catalog and we're sure to have a valid starting index next
+ time. In case of crash, we just restart with old log so we're
+ allright. */
+ if (endrec == cur) {
+ /* XXX: transaction is started by llog itself */
+ rc = mdd_changelog_write_header(env, mdd, CLM_PURGE);
+ if (rc)
+ goto out;
+ }
- RETURN(rc);
+ /* Some records were purged, so reset repeat-access time (so we
+ record new mtime update records, so users can see a file has been
+ changed since the last purge) */
+ mdd->mdd_cl.mc_starttime = cfs_time_current_64();
+
+ rc = llog_cancel(env, ctxt, NULL, 1, (struct llog_cookie *)&endrec, 0);
+out:
+ llog_ctxt_put(ctxt);
+ return rc;
}
-static void mdd_device_shutdown(const struct lu_env *env,
- struct mdd_device *m, struct lustre_cfg *cfg)
+/** Add a CL_MARK record to the changelog
+ * \param mdd
+ * \param markerflags - CLM_*
+ * \retval 0 ok
+ */
+int mdd_changelog_write_header(const struct lu_env *env,
+ struct mdd_device *mdd, int markerflags)
{
- ENTRY;
- dt_txn_callback_del(m->mdd_child, &m->mdd_txn_cb);
- if (m->mdd_obd_dev)
- mdd_fini_obd(env, m, cfg);
- orph_index_fini(env, m);
- /* remove upcall device*/
- md_upcall_fini(&m->mdd_md_dev);
- EXIT;
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ struct llog_changelog_rec *rec;
+ struct lu_buf *buf;
+ struct llog_ctxt *ctxt;
+ int reclen;
+ int len = strlen(obd->obd_name);
+ int rc;
+
+ ENTRY;
+
+ if (mdd->mdd_cl.mc_mask & (1 << CL_MARK)) {
+ mdd->mdd_cl.mc_starttime = cfs_time_current_64();
+ RETURN(0);
+ }
+
+ reclen = llog_data_len(sizeof(*rec) + len);
+ buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+ rec = buf->lb_buf;
+
+ rec->cr.cr_flags = CLF_VERSION;
+ rec->cr.cr_type = CL_MARK;
+ rec->cr.cr_namelen = len;
+ memcpy(rec->cr.cr_name, obd->obd_name, rec->cr.cr_namelen);
+ /* Status and action flags */
+ rec->cr.cr_markerflags = mdd->mdd_cl.mc_flags | markerflags;
+ rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) + rec->cr.cr_namelen);
+ rec->cr_hdr.lrh_type = CHANGELOG_REC;
+ rec->cr.cr_time = cl_time();
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ rec->cr.cr_index = ++mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
+ LASSERT(ctxt);
+
+ rc = llog_cat_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL, NULL);
+ if (rc > 0)
+ rc = 0;
+ llog_ctxt_put(ctxt);
+
+ /* assume on or off event; reset repeat-access time */
+ mdd->mdd_cl.mc_starttime = cfs_time_current_64();
+ RETURN(rc);
+}
+
+/**
+ * Lookup method for "fid" object. Only filenames with correct SEQ:OID format
+ * are valid. We also check if object with passed fid exists or not.
+ */
+static int obf_lookup(const struct lu_env *env, struct md_object *p,
+ const struct lu_name *lname, struct lu_fid *f,
+ struct md_op_spec *spec)
+{
+ char *name = (char *)lname->ln_name;
+ struct mdd_device *mdd = mdo2mdd(p);
+ struct mdd_object *child;
+ int rc = 0;
+
+ while (*name == '[')
+ name++;
+
+ sscanf(name, SFID, RFID(f));
+ if (!fid_is_sane(f)) {
+ CWARN("%s: bad FID format [%s], should be "DFID"\n",
+ mdd2obd_dev(mdd)->obd_name, lname->ln_name,
+ (__u64)FID_SEQ_NORMAL, 1, 0);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if (!fid_is_norm(f) && !fid_is_igif(f) && !fid_is_root(f) &&
+ !fid_seq_is_dot(f->f_seq)) {
+ CWARN("%s: "DFID" is invalid, sequence should be "
+ ">= "LPX64" or within ["LPX64","LPX64"].\n",
+ mdd2obd_dev(mdd)->obd_name, PFID(f),
+ (__u64)FID_SEQ_NORMAL, (__u64)FID_SEQ_IGIF,
+ (__u64)FID_SEQ_IGIF_MAX);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ /* Check if object with this fid exists */
+ child = mdd_object_find(env, mdd, f);
+ if (child == NULL)
+ GOTO(out, rc = 0);
+ if (IS_ERR(child))
+ GOTO(out, rc = PTR_ERR(child));
+
+ if (mdd_object_exists(child) == 0)
+ rc = -ENOENT;
+
+ mdd_object_put(env, child);
+
+out:
+ return rc;
+}
+
+static int obf_create(const struct lu_env *env, struct md_object *pobj,
+ const struct lu_name *lname, struct md_object *child,
+ struct md_op_spec *spec, struct md_attr* ma)
+{
+ return -EPERM;
+}
+
+static int obf_rename(const struct lu_env *env,
+ struct md_object *src_pobj, struct md_object *tgt_pobj,
+ const struct lu_fid *lf, const struct lu_name *lsname,
+ struct md_object *tobj, const struct lu_name *ltname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int obf_link(const struct lu_env *env, struct md_object *tgt_obj,
+ struct md_object *src_obj, const struct lu_name *lname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int obf_unlink(const struct lu_env *env, struct md_object *pobj,
+ struct md_object *cobj, const struct lu_name *lname,
+ struct md_attr *ma, int no_name)
+{
+ return -EPERM;
+}
+
+static struct md_dir_operations mdd_obf_dir_ops = {
+ .mdo_lookup = obf_lookup,
+ .mdo_create = obf_create,
+ .mdo_rename = obf_rename,
+ .mdo_link = obf_link,
+ .mdo_unlink = obf_unlink
+};
+
+static struct md_object *mdo_locate(const struct lu_env *env,
+ struct md_device *md,
+ const struct lu_fid *fid)
+{
+ struct lu_object *obj;
+ struct md_object *mdo;
+
+ obj = lu_object_find(env, &md->md_lu_dev, fid, NULL);
+ if (!IS_ERR(obj)) {
+ obj = lu_object_locate(obj->lo_header, md->md_lu_dev.ld_type);
+ LASSERT(obj != NULL);
+ mdo = lu2md(obj);
+ } else {
+ mdo = ERR_PTR(PTR_ERR(obj));
+ }
+ return mdo;
+}
+
+/**
+ * Create special in-memory "fid" object for open-by-fid.
+ */
+static int mdd_obf_setup(const struct lu_env *env, struct mdd_device *m)
+{
+ struct md_object *mdo;
+ struct mdd_object *mdd_obf;
+ struct lu_fid fid = LU_OBF_FID;
+ int rc;
+
+ rc = mdd_local_file_create(env, m, mdd_object_fid(m->mdd_dot_lustre),
+ mdd_obf_dir_name, S_IFDIR | S_IXUSR, &fid);
+ if (rc < 0)
+ RETURN(rc);
+
+ mdo = mdo_locate(env, &m->mdd_md_dev, &fid);
+ if (IS_ERR(mdo))
+ RETURN(PTR_ERR(mdo));
+
+ LASSERT(lu_object_exists(&mdo->mo_lu));
+
+ mdd_obf = md2mdd_obj(mdo);
+ mdd_obf->mod_obj.mo_dir_ops = &mdd_obf_dir_ops;
+ m->mdd_dot_lustre_objs.mdd_obf = mdd_obf;
+
+ return 0;
+}
+
+/** Setup ".lustre" directory object */
+static int mdd_dot_lustre_setup(const struct lu_env *env, struct mdd_device *m)
+{
+ struct md_object *mdo;
+ struct lu_fid fid;
+ int rc;
+
+ ENTRY;
+ /* Create ".lustre" directory in ROOT. */
+ fid = LU_DOT_LUSTRE_FID;
+ rc = mdd_local_file_create(env, m, &m->mdd_root_fid,
+ dot_lustre_name,
+ S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO,
+ &fid);
+ if (rc < 0)
+ RETURN(rc);
+ mdo = mdo_locate(env, &m->mdd_md_dev, &fid);
+ if (IS_ERR(mdo))
+ RETURN(PTR_ERR(mdo));
+ LASSERT(lu_object_exists(&mdo->mo_lu));
+
+ m->mdd_dot_lustre = md2mdd_obj(mdo);
+
+ rc = mdd_obf_setup(env, m);
+ if (rc) {
+ CERROR("%s: error initializing \"fid\" object: rc = %d.\n",
+ mdd2obd_dev(m)->obd_name, rc);
+ GOTO(out, rc);
+ }
+ RETURN(0);
+out:
+ mdd_object_put(env, m->mdd_dot_lustre);
+ m->mdd_dot_lustre = NULL;
+ return rc;
+}
+
+
+static struct llog_operations hsm_actions_logops;
+
+/**
+ * set llog methods and create LLOG_AGENT_ORIG_CTXT llog
+ * object in obd_device
+ */
+static int mdd_hsm_actions_llog_init(const struct lu_env *env,
+ struct mdd_device *m)
+{
+ struct obd_device *obd = mdd2obd_dev(m);
+ struct llog_ctxt *ctxt = NULL;
+ int rc;
+ ENTRY;
+
+ OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
+ obd->obd_lvfs_ctxt.dt = m->mdd_bottom;
+
+ rc = llog_setup(env, obd, &obd->obd_olg, LLOG_AGENT_ORIG_CTXT,
+ obd, &hsm_actions_logops);
+ if (rc) {
+ CERROR("%s: hsm actions llog setup failed: rc = %d\n",
+ obd->obd_name, rc);
+ RETURN(rc);
+ }
+
+ ctxt = llog_get_context(obd, LLOG_AGENT_ORIG_CTXT);
+ LASSERT(ctxt);
+
+ rc = llog_open_create(env, ctxt, &ctxt->loc_handle, NULL,
+ HSM_ACTIONS);
+ if (rc) {
+ CERROR("%s: hsm actions llog open_create failed: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(out_cleanup, rc);
+ }
+
+ rc = llog_cat_init_and_process(env, ctxt->loc_handle);
+ if (rc)
+ GOTO(out_close, rc);
+
+ llog_ctxt_put(ctxt);
+ RETURN(0);
+
+out_close:
+ llog_cat_close(env, ctxt->loc_handle);
+ ctxt->loc_handle = NULL;
+out_cleanup:
+ llog_cleanup(env, ctxt);
+
+ return rc;
+}
+
+/**
+ * cleanup the context created by llog_setup_named()
+ */
+static int mdd_hsm_actions_llog_fini(const struct lu_env *env,
+ struct mdd_device *m)
+{
+ struct obd_device *obd = mdd2obd_dev(m);
+ struct llog_ctxt *lctxt;
+ ENTRY;
+
+ lctxt = llog_get_context(obd, LLOG_AGENT_ORIG_CTXT);
+ if (lctxt) {
+ llog_cat_close(env, lctxt->loc_handle);
+ lctxt->loc_handle = NULL;
+ llog_cleanup(env, lctxt);
+ }
+
+ RETURN(0);
+}
+
+static void mdd_device_shutdown(const struct lu_env *env, struct mdd_device *m,
+ struct lustre_cfg *cfg)
+{
+ lfsck_degister(env, m->mdd_bottom);
+ mdd_hsm_actions_llog_fini(env, m);
+ mdd_changelog_fini(env, m);
+ orph_index_fini(env, m);
+ if (m->mdd_dot_lustre_objs.mdd_obf)
+ mdd_object_put(env, m->mdd_dot_lustre_objs.mdd_obf);
+ if (m->mdd_dot_lustre)
+ mdd_object_put(env, m->mdd_dot_lustre);
+ if (m->mdd_los != NULL)
+ local_oid_storage_fini(env, m->mdd_los);
+ lu_site_purge(env, mdd2lu_dev(m)->ld_site, ~0);
+
+ if (m->mdd_child_exp)
+ obd_disconnect(m->mdd_child_exp);
}
static int mdd_process_config(const struct lu_env *env,
rc = next->ld_ops->ldo_process_config(env, next, cfg);
if (rc)
GOTO(out, rc);
- dt->dd_ops->dt_conf_get(env, dt, &m->mdd_dt_conf);
-
- rc = mdd_init_obd(env, m, cfg);
- if (rc) {
- CERROR("lov init error %d \n", rc);
- GOTO(out, rc);
- }
- rc = mdd_mount(env, m);
- if (rc)
- GOTO(out, rc);
- rc = mdd_txn_init_credits(env, m);
+ dt_conf_get(env, dt, &m->mdd_dt_conf);
break;
case LCFG_CLEANUP:
- mdd_device_shutdown(env, m, cfg);
+ rc = next->ld_ops->ldo_process_config(env, next, cfg);
+ lu_dev_del_linkage(d->ld_site, d);
+ mdd_device_shutdown(env, m, cfg);
+ break;
default:
rc = next->ld_ops->ldo_process_config(env, next, cfg);
break;
out:
RETURN(rc);
}
-#if 0
-static int mdd_lov_set_nextid(const struct lu_env *env,
- struct mdd_device *mdd)
-{
- struct mds_obd *mds = &mdd->mdd_obd_dev->u.mds;
- int rc;
- ENTRY;
-
- LASSERT(mds->mds_lov_objids != NULL);
- rc = obd_set_info_async(mds->mds_osc_exp, strlen(KEY_NEXT_ID),
- KEY_NEXT_ID, mds->mds_lov_desc.ld_tgt_count,
- mds->mds_lov_objids, NULL);
-
- RETURN(rc);
-}
-
-static int mdd_cleanup_unlink_llog(const struct lu_env *env,
- struct mdd_device *mdd)
-{
- /* XXX: to be implemented! */
- return 0;
-}
-#endif
static int mdd_recovery_complete(const struct lu_env *env,
struct lu_device *d)
{
struct mdd_device *mdd = lu2mdd_dev(d);
- struct lu_device *next = &mdd->mdd_child->dd_lu_dev;
- struct obd_device *obd = mdd2obd_dev(mdd);
+ struct lu_device *next;
int rc;
ENTRY;
LASSERT(mdd != NULL);
- LASSERT(obd != NULL);
-#if 0
- /* XXX: Do we need this in new stack? */
- rc = mdd_lov_set_nextid(env, mdd);
- if (rc) {
- CERROR("mdd_lov_set_nextid() failed %d\n",
- rc);
- RETURN(rc);
- }
-
- /* XXX: cleanup unlink. */
- rc = mdd_cleanup_unlink_llog(env, mdd);
- if (rc) {
- CERROR("mdd_cleanup_unlink_llog() failed %d\n",
- rc);
- RETURN(rc);
- }
-#endif
- /* Call that with obd_recovering = 1 just to update objids */
- obd_notify(obd->u.mds.mds_osc_obd, NULL, (obd->obd_async_recov ?
- OBD_NOTIFY_SYNC_NONBLOCK : OBD_NOTIFY_SYNC), NULL);
-
- /* Drop obd_recovering to 0 and call o_postrecov to recover mds_lov */
- obd->obd_recovering = 0;
- obd->obd_type->typ_dt_ops->o_postrecov(obd);
+ next = &mdd->mdd_child->dd_lu_dev;
/* XXX: orphans handling. */
__mdd_orphan_cleanup(env, mdd);
RETURN(rc);
}
+int mdd_local_file_create(const struct lu_env *env, struct mdd_device *mdd,
+ const struct lu_fid *pfid, const char *name, __u32 mode,
+ struct lu_fid *fid)
+{
+ struct dt_object *parent, *dto;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(!fid_is_zero(pfid));
+ parent = dt_locate(env, mdd->mdd_bottom, pfid);
+ if (unlikely(IS_ERR(parent)))
+ RETURN(PTR_ERR(parent));
+
+ /* create local file/dir, if @fid is passed then try to use it */
+ if (fid_is_zero(fid))
+ dto = local_file_find_or_create(env, mdd->mdd_los, parent,
+ name, mode);
+ else
+ dto = local_file_find_or_create_with_fid(env, mdd->mdd_bottom,
+ fid, parent, name,
+ mode);
+ if (IS_ERR(dto))
+ GOTO(out_put, rc = PTR_ERR(dto));
+ *fid = *lu_object_fid(&dto->do_lu);
+ /* since stack is not fully set up the local_storage uses own stack
+ * and we should drop its object from cache */
+ lu_object_put_nocache(env, &dto->do_lu);
+ EXIT;
+out_put:
+ lu_object_put(env, &parent->do_lu);
+ return 0;
+}
+
+static int mdd_prepare(const struct lu_env *env,
+ struct lu_device *pdev,
+ struct lu_device *cdev)
+{
+ struct mdd_device *mdd = lu2mdd_dev(cdev);
+ struct lu_device *next = &mdd->mdd_child->dd_lu_dev;
+ struct lu_fid fid;
+ int rc;
+
+ ENTRY;
+
+ rc = next->ld_ops->ldo_prepare(env, cdev, next);
+ if (rc)
+ RETURN(rc);
+
+ /* Setup local dirs */
+ fid.f_seq = FID_SEQ_LOCAL_NAME;
+ fid.f_oid = 1;
+ fid.f_ver = 0;
+ rc = local_oid_storage_init(env, mdd->mdd_bottom, &fid,
+ &mdd->mdd_los);
+ if (rc)
+ RETURN(rc);
+
+ rc = dt_root_get(env, mdd->mdd_child, &mdd->mdd_local_root_fid);
+ if (rc < 0)
+ GOTO(out_los, rc);
+
+ lu_root_fid(&fid);
+ if (mdd_seq_site(mdd)->ss_node_id == 0) {
+ rc = mdd_local_file_create(env, mdd, &mdd->mdd_local_root_fid,
+ mdd_root_dir_name, S_IFDIR |
+ S_IRUGO | S_IWUSR | S_IXUGO, &fid);
+ if (rc != 0) {
+ CERROR("%s: create root fid failed: rc = %d\n",
+ mdd2obd_dev(mdd)->obd_name, rc);
+ GOTO(out_los, rc);
+ }
+
+ mdd->mdd_root_fid = fid;
+ rc = mdd_dot_lustre_setup(env, mdd);
+ if (rc != 0) {
+ CERROR("%s: initializing .lustre failed: rc = %d\n",
+ mdd2obd_dev(mdd)->obd_name, rc);
+ GOTO(out_los, rc);
+ }
+
+ rc = mdd_compat_fixes(env, mdd);
+ if (rc)
+ GOTO(out_los, rc);
+
+ } else {
+ /* Normal client usually send root access to MDT0 directly,
+ * the root FID on non-MDT0 will only be used by echo client. */
+ mdd->mdd_root_fid = fid;
+ }
+
+ rc = orph_index_init(env, mdd);
+ if (rc < 0)
+ GOTO(out_dot, rc);
+
+ rc = mdd_changelog_init(env, mdd);
+ if (rc != 0) {
+ CERROR("%s: failed to initialize changelog: rc = %d\n",
+ mdd2obd_dev(mdd)->obd_name, rc);
+ GOTO(out_orph, rc);
+ }
+
+ rc = mdd_hsm_actions_llog_init(env, mdd);
+ if (rc != 0)
+ GOTO(out_changelog, rc);
+
+ rc = lfsck_register(env, mdd->mdd_bottom, mdd->mdd_child, true);
+ if (rc != 0) {
+ CERROR("%s: failed to initialize lfsck: rc = %d\n",
+ mdd2obd_dev(mdd)->obd_name, rc);
+ GOTO(out_hsm, rc);
+ }
+ RETURN(0);
+out_hsm:
+ mdd_hsm_actions_llog_fini(env, mdd);
+out_changelog:
+ mdd_changelog_fini(env, mdd);
+out_orph:
+ orph_index_fini(env, mdd);
+out_dot:
+ if (mdd_seq_site(mdd)->ss_node_id == 0) {
+ mdd_object_put(env, mdd->mdd_dot_lustre);
+ mdd->mdd_dot_lustre = NULL;
+ mdd_object_put(env, mdd->mdd_dot_lustre_objs.mdd_obf);
+ mdd->mdd_dot_lustre_objs.mdd_obf = NULL;
+ }
+out_los:
+ local_oid_storage_fini(env, mdd->mdd_los);
+ mdd->mdd_los = NULL;
+
+ return rc;
+}
+
const struct lu_device_operations mdd_lu_ops = {
.ldo_object_alloc = mdd_object_alloc,
.ldo_process_config = mdd_process_config,
- .ldo_recovery_complete = mdd_recovery_complete
+ .ldo_recovery_complete = mdd_recovery_complete,
+ .ldo_prepare = mdd_prepare,
};
-/*
- * No permission check is needed.
- */
static int mdd_root_get(const struct lu_env *env,
- struct md_device *m, struct lu_fid *f)
+ struct md_device *m, struct lu_fid *f)
{
- struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
+ struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
- ENTRY;
- *f = mdd->mdd_root_fid;
- RETURN(0);
+ ENTRY;
+ *f = mdd->mdd_root_fid;
+ RETURN(0);
}
/*
* No permission check is needed.
*/
static int mdd_statfs(const struct lu_env *env, struct md_device *m,
- struct kstatfs *sfs)
+ struct obd_statfs *sfs)
{
- struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
- int rc;
+ struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
+ int rc;
- ENTRY;
+ ENTRY;
- rc = mdd_child_ops(mdd)->dt_statfs(env, mdd->mdd_child, sfs);
+ rc = mdd_child_ops(mdd)->dt_statfs(env, mdd->mdd_child, sfs);
- RETURN(rc);
+ sfs->os_namelen = min_t(__u32, sfs->os_namelen, NAME_MAX);
+
+ RETURN(rc);
}
/*
* No permission check is needed.
*/
-static int mdd_maxsize_get(const struct lu_env *env, struct md_device *m,
- int *md_size, int *cookie_size)
-{
- struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
- ENTRY;
-
- *md_size = mdd_lov_mdsize(env, mdd);
- *cookie_size = mdd_lov_cookiesize(env, mdd);
-
- RETURN(0);
-}
-
static int mdd_init_capa_ctxt(const struct lu_env *env, struct md_device *m,
int mode, unsigned long timeout, __u32 alg,
struct lustre_capa_key *keys)
{
struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
- struct mds_obd *mds = &mdd2obd_dev(mdd)->u.mds;
int rc;
ENTRY;
- mds->mds_capa_keys = keys;
+ /* need barrier for mds_capa_keys access. */
+
rc = mdd_child_ops(mdd)->dt_init_capa_ctxt(env, mdd->mdd_child, mode,
timeout, alg, keys);
RETURN(rc);
}
+static int mdd_maxeasize_get(const struct lu_env *env, struct md_device *m,
+ int *easize)
+{
+ struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
+ ENTRY;
+
+ *easize = mdd->mdd_dt_conf.ddp_max_ea_size;
+
+ RETURN(0);
+}
+
static int mdd_update_capa_key(const struct lu_env *env,
struct md_device *m,
struct lustre_capa_key *key)
{
+ /* we do not support capabilities ... */
+ return -EINVAL;
+}
+
+static int mdd_llog_ctxt_get(const struct lu_env *env, struct md_device *m,
+ int idx, void **h)
+{
struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
- struct obd_export *lov_exp = mdd2obd_dev(mdd)->u.mds.mds_osc_exp;
- int rc;
- ENTRY;
- rc = obd_set_info_async(lov_exp, sizeof(KEY_CAPA_KEY), KEY_CAPA_KEY,
- sizeof(*key), key, NULL);
- RETURN(rc);
+ *h = llog_group_get_ctxt(&mdd2obd_dev(mdd)->obd_olg, idx);
+ return (*h == NULL ? -ENOENT : 0);
+}
+
+static struct lu_device *mdd_device_free(const struct lu_env *env,
+ struct lu_device *lu)
+{
+ struct mdd_device *m = lu2mdd_dev(lu);
+ ENTRY;
+
+ LASSERT(atomic_read(&lu->ld_ref) == 0);
+ md_device_fini(&m->mdd_md_dev);
+ OBD_FREE_PTR(m);
+ RETURN(NULL);
}
static struct lu_device *mdd_device_alloc(const struct lu_env *env,
if (m == NULL) {
l = ERR_PTR(-ENOMEM);
} else {
- md_device_init(&m->mdd_md_dev, t);
+ int rc;
+
l = mdd2lu_dev(m);
- l->ld_ops = &mdd_lu_ops;
- m->mdd_md_dev.md_ops = &mdd_ops;
- md_upcall_init(&m->mdd_md_dev, NULL);
+ md_device_init(&m->mdd_md_dev, t);
+ rc = mdd_init0(env, m, t, lcfg);
+ if (rc != 0) {
+ mdd_device_free(env, l);
+ l = ERR_PTR(rc);
+ }
}
return l;
}
-static struct lu_device *mdd_device_free(const struct lu_env *env,
- struct lu_device *lu)
+/*
+ * we use exports to track all mdd users
+ */
+static int mdd_obd_connect(const struct lu_env *env, struct obd_export **exp,
+ struct obd_device *obd, struct obd_uuid *cluuid,
+ struct obd_connect_data *data, void *localdata)
{
- struct mdd_device *m = lu2mdd_dev(lu);
- struct lu_device *next = &m->mdd_child->dd_lu_dev;
- ENTRY;
+ struct mdd_device *mdd = lu2mdd_dev(obd->obd_lu_dev);
+ struct lustre_handle conn;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_CONFIG, "connect #%d\n", mdd->mdd_connects);
+
+ rc = class_connect(&conn, obd, cluuid);
+ if (rc)
+ RETURN(rc);
- LASSERT(atomic_read(&lu->ld_ref) == 0);
- md_device_fini(&m->mdd_md_dev);
- OBD_FREE_PTR(m);
- RETURN(next);
+ *exp = class_conn2export(&conn);
+
+ /* Why should there ever be more than 1 connect? */
+ LASSERT(mdd->mdd_connects == 0);
+ mdd->mdd_connects++;
+
+ RETURN(0);
+}
+
+/*
+ * once last export (we don't count self-export) disappeared
+ * mdd can be released
+ */
+static int mdd_obd_disconnect(struct obd_export *exp)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct mdd_device *mdd = lu2mdd_dev(obd->obd_lu_dev);
+ int rc, release = 0;
+ ENTRY;
+
+ mdd->mdd_connects--;
+ if (mdd->mdd_connects == 0)
+ release = 1;
+
+ rc = class_disconnect(exp);
+
+ if (rc == 0 && release)
+ class_manual_cleanup(obd);
+ RETURN(rc);
+}
+
+static int mdd_obd_get_info(const struct lu_env *env, struct obd_export *exp,
+ __u32 keylen, void *key, __u32 *vallen, void *val,
+ struct lov_stripe_md *lsm)
+{
+ int rc = -EINVAL;
+
+ if (KEY_IS(KEY_OSP_CONNECTED)) {
+ struct obd_device *obd = exp->exp_obd;
+ struct mdd_device *mdd;
+
+ if (!obd->obd_set_up || obd->obd_stopping)
+ RETURN(-EAGAIN);
+
+ mdd = lu2mdd_dev(obd->obd_lu_dev);
+ LASSERT(mdd);
+ rc = obd_get_info(env, mdd->mdd_child_exp, keylen, key, vallen,
+ val, lsm);
+ RETURN(rc);
+ }
+
+ RETURN(rc);
}
static struct obd_ops mdd_obd_device_ops = {
- .o_owner = THIS_MODULE
+ .o_owner = THIS_MODULE,
+ .o_connect = mdd_obd_connect,
+ .o_disconnect = mdd_obd_disconnect,
+ .o_get_info = mdd_obd_get_info,
};
-/* context key constructor/destructor: mdd_ucred_key_init, mdd_ucred_key_fini */
-LU_KEY_INIT_FINI(mdd_ucred, struct md_ucred);
+static int mdd_changelog_user_register(const struct lu_env *env,
+ struct mdd_device *mdd, int *id)
+{
+ struct llog_ctxt *ctxt;
+ struct llog_changelog_user_rec *rec;
+ int rc;
+ ENTRY;
+
+ ctxt = llog_get_context(mdd2obd_dev(mdd),
+ LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt == NULL)
+ RETURN(-ENXIO);
+
+ OBD_ALLOC_PTR(rec);
+ if (rec == NULL) {
+ llog_ctxt_put(ctxt);
+ RETURN(-ENOMEM);
+ }
+
+ /* Assume we want it on since somebody registered */
+ rc = mdd_changelog_on(env, mdd, 1);
+ if (rc)
+ GOTO(out, rc);
+
+ rec->cur_hdr.lrh_len = sizeof(*rec);
+ rec->cur_hdr.lrh_type = CHANGELOG_USER_REC;
+ spin_lock(&mdd->mdd_cl.mc_user_lock);
+ if (mdd->mdd_cl.mc_lastuser == (unsigned int)(-1)) {
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+ CERROR("Maximum number of changelog users exceeded!\n");
+ GOTO(out, rc = -EOVERFLOW);
+ }
+ *id = rec->cur_id = ++mdd->mdd_cl.mc_lastuser;
+ rec->cur_endrec = mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+
+ rc = llog_cat_add(env, ctxt->loc_handle, &rec->cur_hdr, NULL, NULL);
+
+ CDEBUG(D_IOCTL, "Registered changelog user %d\n", *id);
+out:
+ OBD_FREE_PTR(rec);
+ llog_ctxt_put(ctxt);
+ RETURN(rc);
+}
-static struct lu_context_key mdd_ucred_key = {
- .lct_tags = LCT_SESSION,
- .lct_init = mdd_ucred_key_init,
- .lct_fini = mdd_ucred_key_fini
+struct mdd_changelog_user_data {
+ __u64 mcud_endrec; /**< purge record for this user */
+ __u64 mcud_minrec; /**< lowest changelog recno still referenced */
+ __u32 mcud_id;
+ __u32 mcud_minid; /**< user id with lowest rec reference */
+ __u32 mcud_usercount;
+ unsigned int mcud_found:1;
};
+#define MCUD_UNREGISTER -1LL
-struct md_ucred *md_ucred(const struct lu_env *env)
+/** Two things:
+ * 1. Find the smallest record everyone is willing to purge
+ * 2. Update the last purgeable record for this user
+ */
+static int mdd_changelog_user_purge_cb(const struct lu_env *env,
+ struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
{
- LASSERT(env->le_ses != NULL);
- return lu_context_key_get(env->le_ses, &mdd_ucred_key);
+ struct llog_changelog_user_rec *rec;
+ struct mdd_changelog_user_data *mcud = data;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+
+ rec = (struct llog_changelog_user_rec *)hdr;
+
+ mcud->mcud_usercount++;
+
+ /* If we have a new endrec for this id, use it for the following
+ min check instead of its old value */
+ if (rec->cur_id == mcud->mcud_id)
+ rec->cur_endrec = max(rec->cur_endrec, mcud->mcud_endrec);
+
+ /* Track the minimum referenced record */
+ if (mcud->mcud_minid == 0 || mcud->mcud_minrec > rec->cur_endrec) {
+ mcud->mcud_minid = rec->cur_id;
+ mcud->mcud_minrec = rec->cur_endrec;
+ }
+
+ if (rec->cur_id != mcud->mcud_id)
+ RETURN(0);
+
+ /* Update this user's record */
+ mcud->mcud_found = 1;
+
+ /* Special case: unregister this user */
+ if (mcud->mcud_endrec == MCUD_UNREGISTER) {
+ struct llog_cookie cookie;
+
+ cookie.lgc_lgl = llh->lgh_id;
+ cookie.lgc_index = hdr->lrh_index;
+
+ rc = llog_cat_cancel_records(env, llh->u.phd.phd_cat_handle,
+ 1, &cookie);
+ if (rc == 0)
+ mcud->mcud_usercount--;
+
+ RETURN(rc);
+ }
+
+ /* Update the endrec */
+ CDEBUG(D_IOCTL, "Rewriting changelog user %d endrec to "LPU64"\n",
+ mcud->mcud_id, rec->cur_endrec);
+
+ /* hdr+1 is loc of data */
+ hdr->lrh_len -= sizeof(*hdr) + sizeof(struct llog_rec_tail);
+ rc = llog_write(env, llh, hdr, NULL, 0, (void *)(hdr + 1),
+ hdr->lrh_index);
+
+ RETURN(rc);
}
-EXPORT_SYMBOL(md_ucred);
-/*
- * context key constructor/destructor:
- * mdd_capainfo_key_init, mdd_capainfo_key_fini
- */
-LU_KEY_INIT_FINI(mdd_capainfo, struct md_capainfo);
+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;
-struct lu_context_key mdd_capainfo_key = {
- .lct_tags = LCT_SESSION,
- .lct_init = mdd_capainfo_key_init,
- .lct_fini = mdd_capainfo_key_fini
-};
+ 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;
+ }
-struct md_capainfo *md_capainfo(const struct lu_env *env)
+ if (!rc && data.mcud_usercount == 0)
+ /* No more users; turn changelogs off */
+ rc = mdd_changelog_on(env, mdd, 0);
+
+ RETURN (rc);
+}
+
+/** mdd_iocontrol
+ * May be called remotely from mdt_iocontrol_handle or locally from
+ * mdt_iocontrol. Data may be freeform - remote handling doesn't enforce
+ * an obd_ioctl_data format (but local ioctl handler does).
+ * \param cmd - ioc
+ * \param len - data len
+ * \param karg - ioctl data, in kernel space
+ */
+static int mdd_iocontrol(const struct lu_env *env, struct md_device *m,
+ unsigned int cmd, int len, void *karg)
{
- /* NB, in mdt_init0 */
- if (env->le_ses == NULL)
- return NULL;
- return lu_context_key_get(env->le_ses, &mdd_capainfo_key);
+ struct mdd_device *mdd;
+ struct obd_ioctl_data *data = karg;
+ int rc;
+ ENTRY;
+
+ mdd = lu2mdd_dev(&m->md_lu_dev);
+
+ /* Doesn't use obd_ioctl_data */
+ switch (cmd) {
+ case OBD_IOC_CHANGELOG_CLEAR: {
+ struct changelog_setinfo *cs = karg;
+ rc = mdd_changelog_user_purge(env, mdd, cs->cs_id,
+ cs->cs_recno);
+ RETURN(rc);
+ }
+ case OBD_IOC_GET_MNTOPT: {
+ mntopt_t *mntopts = (mntopt_t *)karg;
+ *mntopts = mdd->mdd_dt_conf.ddp_mntopts;
+ RETURN(0);
+ }
+ case OBD_IOC_START_LFSCK: {
+ rc = lfsck_start(env, mdd->mdd_bottom,
+ (struct lfsck_start_param *)karg);
+ RETURN(rc);
+ }
+ case OBD_IOC_STOP_LFSCK: {
+ rc = lfsck_stop(env, mdd->mdd_bottom, false);
+ RETURN(rc);
+ }
+ case OBD_IOC_PAUSE_LFSCK: {
+ rc = lfsck_stop(env, mdd->mdd_bottom, true);
+ RETURN(rc);
+ }
+ }
+
+ /* Below ioctls use obd_ioctl_data */
+ if (len != sizeof(*data)) {
+ CERROR("Bad ioctl size %d\n", len);
+ RETURN(-EINVAL);
+ }
+ if (data->ioc_version != OBD_IOCTL_VERSION) {
+ CERROR("Bad magic %x != %x\n", data->ioc_version,
+ OBD_IOCTL_VERSION);
+ RETURN(-EINVAL);
+ }
+
+ switch (cmd) {
+ case OBD_IOC_CHANGELOG_REG:
+ rc = mdd_changelog_user_register(env, mdd, &data->ioc_u32_1);
+ break;
+ case OBD_IOC_CHANGELOG_DEREG:
+ rc = mdd_changelog_user_purge(env, mdd, data->ioc_u32_1,
+ MCUD_UNREGISTER);
+ break;
+ default:
+ rc = -ENOTTY;
+ }
+
+ RETURN (rc);
}
-EXPORT_SYMBOL(md_capainfo);
/* type constructor/destructor: mdd_type_init, mdd_type_fini */
-LU_TYPE_INIT_FINI(mdd, &mdd_thread_key, &mdd_ucred_key, &mdd_capainfo_key);
+LU_TYPE_INIT_FINI(mdd, &mdd_thread_key);
const struct md_device_operations mdd_ops = {
- .mdo_statfs = mdd_statfs,
- .mdo_root_get = mdd_root_get,
- .mdo_maxsize_get = mdd_maxsize_get,
- .mdo_init_capa_ctxt = mdd_init_capa_ctxt,
- .mdo_update_capa_key= mdd_update_capa_key,
-#ifdef HAVE_QUOTA_SUPPORT
- .mdo_quota = {
- .mqo_notify = mdd_quota_notify,
- .mqo_setup = mdd_quota_setup,
- .mqo_cleanup = mdd_quota_cleanup,
- .mqo_recovery = mdd_quota_recovery,
- .mqo_check = mdd_quota_check,
- .mqo_on = mdd_quota_on,
- .mqo_off = mdd_quota_off,
- .mqo_setinfo = mdd_quota_setinfo,
- .mqo_getinfo = mdd_quota_getinfo,
- .mqo_setquota = mdd_quota_setquota,
- .mqo_getquota = mdd_quota_getquota,
- .mqo_getoinfo = mdd_quota_getoinfo,
- .mqo_getoquota = mdd_quota_getoquota,
- .mqo_invalidate = mdd_quota_invalidate,
- .mqo_finvalidate = mdd_quota_finvalidate
- }
-#endif
+ .mdo_statfs = mdd_statfs,
+ .mdo_root_get = mdd_root_get,
+ .mdo_init_capa_ctxt = mdd_init_capa_ctxt,
+ .mdo_update_capa_key= mdd_update_capa_key,
+ .mdo_llog_ctxt_get = mdd_llog_ctxt_get,
+ .mdo_iocontrol = mdd_iocontrol,
+ .mdo_maxeasize_get = mdd_maxeasize_get,
};
static struct lu_device_type_operations mdd_device_type_ops = {
.ldto_device_alloc = mdd_device_alloc,
.ldto_device_free = mdd_device_free,
- .ldto_device_init = mdd_device_init,
.ldto_device_fini = mdd_device_fini
};
struct lu_context_key *key, void *data)
{
struct mdd_thread_info *info = data;
- if (info->mti_max_lmm != NULL)
- OBD_FREE(info->mti_max_lmm, info->mti_max_lmm_size);
- if (info->mti_max_cookie != NULL)
- OBD_FREE(info->mti_max_cookie, info->mti_max_cookie_size);
+
+ lu_buf_free(&info->mti_big_buf);
+ lu_buf_free(&info->mti_link_buf);
+
OBD_FREE_PTR(info);
}
static int __init mdd_mod_init(void)
{
- struct lprocfs_static_vars lvars;
- lprocfs_mdd_init_vars(&lvars);
- return class_register_type(&mdd_obd_device_ops, NULL, lvars.module_vars,
- LUSTRE_MDD_NAME, &mdd_device_type);
+ struct lprocfs_static_vars lvars;
+ int rc;
+
+ lprocfs_mdd_init_vars(&lvars);
+
+ rc = lu_kmem_init(mdd_caches);
+ if (rc)
+ return rc;
+
+ changelog_orig_logops = llog_osd_ops;
+ changelog_orig_logops.lop_cancel = llog_changelog_cancel;
+ changelog_orig_logops.lop_add = llog_cat_add_rec;
+ changelog_orig_logops.lop_declare_add = llog_cat_declare_add_rec;
+
+ hsm_actions_logops = llog_osd_ops;
+ hsm_actions_logops.lop_add = llog_cat_add_rec;
+ hsm_actions_logops.lop_declare_add = llog_cat_declare_add_rec;
+
+ rc = class_register_type(&mdd_obd_device_ops, NULL, NULL,
+#ifndef HAVE_ONLY_PROCFS_SEQ
+ lvars.module_vars,
+#endif
+ LUSTRE_MDD_NAME, &mdd_device_type);
+ if (rc)
+ lu_kmem_fini(mdd_caches);
+ return rc;
}
static void __exit mdd_mod_exit(void)
{
- class_unregister_type(LUSTRE_MDD_NAME);
+ class_unregister_type(LUSTRE_MDD_NAME);
+ lu_kmem_fini(mdd_caches);
}
MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff