1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * cl code shared between vvp and liblustre (and other Lustre clients in the
40 #include <obd_class.h>
41 #include <obd_support.h>
44 #include <lustre_lite.h>
47 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
48 * us to make MDS RPCs with large enough reply buffers to hold the
49 * maximum-sized (= maximum striped) EA and cookie without having to
50 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
51 int cl_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
53 struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC_V3 };
54 __u32 valsize = sizeof(struct lov_desc);
55 int rc, easize, def_easize, cookiesize;
60 rc = obd_get_info(dt_exp, sizeof(KEY_LOVDESC), KEY_LOVDESC,
61 &valsize, &desc, NULL);
65 stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
66 lsm.lsm_stripe_count = stripes;
67 easize = obd_size_diskmd(dt_exp, &lsm);
69 lsm.lsm_stripe_count = desc.ld_default_stripe_count;
70 def_easize = obd_size_diskmd(dt_exp, &lsm);
72 cookiesize = stripes * sizeof(struct llog_cookie);
74 CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
77 rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
82 * This function is used as an upcall-callback hooked by liblustre and llite
83 * clients into obd_notify() listeners chain to handle notifications about
84 * change of import connect_flags. See llu_fsswop_mount() and
85 * lustre_common_fill_super().
87 int cl_ocd_update(struct obd_device *host,
88 struct obd_device *watched,
89 enum obd_notify_event ev, void *owner)
91 struct lustre_client_ocd *lco;
92 struct client_obd *cli;
97 if (!strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) {
98 cli = &watched->u.cli;
100 flags = cli->cl_import->imp_connect_data.ocd_connect_flags;
101 CDEBUG(D_SUPER, "Changing connect_flags: "LPX64" -> "LPX64"\n",
102 lco->lco_flags, flags);
103 spin_lock(&lco->lco_lock);
104 lco->lco_flags &= flags;
105 /* for each osc event update ea size */
107 cl_init_ea_size(lco->lco_md_exp, lco->lco_dt_exp);
109 spin_unlock(&lco->lco_lock);
112 CERROR("unexpected notification from %s %s!\n",
113 watched->obd_type->typ_name,