-/* -*- 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.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_LOV
-#ifdef __KERNEL__
#include <libcfs/libcfs.h>
-#else
-#include <liblustre.h>
-#endif
#include <obd_class.h>
-#include <obd_lov.h>
-
#include "lov_internal.h"
/** Merge the lock value block(&lvb) attributes and KMS from each of the
int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
struct ost_lvb *lvb, __u64 *kms_place)
{
- __u64 size = 0;
- __u64 kms = 0;
- __u64 blocks = 0;
- __u64 current_mtime = lvb->lvb_mtime;
- __u64 current_atime = lvb->lvb_atime;
- __u64 current_ctime = lvb->lvb_ctime;
- int i;
- int rc = 0;
-
- LASSERT_SPIN_LOCKED(&lsm->lsm_lock);
-#ifdef __KERNEL__
- LASSERT(lsm->lsm_lock_owner == cfs_curproc_pid());
-#endif
-
- for (i = 0; i < lsm->lsm_stripe_count; i++) {
- struct lov_oinfo *loi = lsm->lsm_oinfo[i];
- obd_size lov_size, tmpsize;
+ u64 size = 0;
+ u64 kms = 0;
+ u64 blocks = 0;
+ s64 current_mtime = lvb->lvb_mtime;
+ s64 current_atime = lvb->lvb_atime;
+ s64 current_ctime = lvb->lvb_ctime;
+ int i;
+ int rc = 0;
+
+ assert_spin_locked(&lsm->lsm_lock);
+ LASSERT(lsm->lsm_lock_owner == current_pid());
+
+ CDEBUG(D_INODE, "MDT ID "DOSTID" initial value: s=%llu m=%llu"
+ " a=%llu c=%llu b=%llu\n", POSTID(&lsm->lsm_oi),
+ lvb->lvb_size, lvb->lvb_mtime, lvb->lvb_atime, lvb->lvb_ctime,
+ lvb->lvb_blocks);
+ for (i = 0; i < lsm->lsm_stripe_count; i++) {
+ struct lov_oinfo *loi = lsm->lsm_oinfo[i];
+ u64 lov_size;
+ u64 tmpsize;
if (OST_LVB_IS_ERR(loi->loi_lvb.lvb_blocks)) {
rc = OST_LVB_GET_ERR(loi->loi_lvb.lvb_blocks);
size = lov_size;
/* merge blocks, mtime, atime */
blocks += loi->loi_lvb.lvb_blocks;
+ if (loi->loi_lvb.lvb_mtime > current_mtime)
+ current_mtime = loi->loi_lvb.lvb_mtime;
if (loi->loi_lvb.lvb_atime > current_atime)
current_atime = loi->loi_lvb.lvb_atime;
-
- /* mtime is always updated with ctime, but can be set in past.
- As write and utime(2) may happen within 1 second, and utime's
- mtime has a priority over write's one, leave mtime from mds
- for the same ctimes. */
- if (loi->loi_lvb.lvb_ctime > current_ctime) {
+ if (loi->loi_lvb.lvb_ctime > current_ctime)
current_ctime = loi->loi_lvb.lvb_ctime;
- current_mtime = loi->loi_lvb.lvb_mtime;
- }
+
+ CDEBUG(D_INODE, "MDT ID "DOSTID" on OST[%u]: s=%llu m=%llu"
+ " a=%llu c=%llu b=%llu\n", POSTID(&lsm->lsm_oi),
+ loi->loi_ost_idx, loi->loi_lvb.lvb_size,
+ loi->loi_lvb.lvb_mtime, loi->loi_lvb.lvb_atime,
+ loi->loi_lvb.lvb_ctime, loi->loi_lvb.lvb_blocks);
}
*kms_place = kms;
lvb->lvb_ctime = current_ctime;
RETURN(rc);
}
-
-/** Merge the lock value block(&lvb) attributes from each of the stripes in a
- * file into a single lvb. It is expected that the caller initializes the
- * current atime, mtime, ctime to avoid regressing a more uptodate time on
- * the local client.
- *
- * If \a kms_only is set then we do not consider the recently seen size (rss)
- * when updating the known minimum size (kms). Even when merging RSS, we will
- * take the KMS value if it's larger. This prevents getattr from stomping on
- * dirty cached pages which extend the file size. */
-int lov_merge_lvb(struct obd_export *exp,
- struct lov_stripe_md *lsm, struct ost_lvb *lvb, int kms_only)
-{
- int rc;
- __u64 kms;
-
- ENTRY;
- rc = lov_merge_lvb_kms(lsm, lvb, &kms);
- if (kms_only)
- lvb->lvb_size = kms;
- CDEBUG(D_INODE, "merged: "LPU64" "LPU64" "LPU64" "LPU64" "LPU64"\n",
- lvb->lvb_size, lvb->lvb_mtime, lvb->lvb_atime,
- lvb->lvb_ctime, lvb->lvb_blocks);
- RETURN(rc);
-}
-
-/* Must be called under the lov_stripe_lock() */
-int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
- obd_off size, int shrink)
-{
- struct lov_oinfo *loi;
- int stripe = 0;
- __u64 kms;
- ENTRY;
-
- LASSERT_SPIN_LOCKED(&lsm->lsm_lock);
-#ifdef __KERNEL__
- LASSERT(lsm->lsm_lock_owner == cfs_curproc_pid());
-#endif
-
- if (shrink) {
- for (; stripe < lsm->lsm_stripe_count; stripe++) {
- struct lov_oinfo *loi = lsm->lsm_oinfo[stripe];
- kms = lov_size_to_stripe(lsm, size, stripe);
- CDEBUG(D_INODE,
- "stripe %d KMS %sing "LPU64"->"LPU64"\n",
- stripe, kms > loi->loi_kms ? "increas":"shrink",
- loi->loi_kms, kms);
- loi_kms_set(loi, loi->loi_lvb.lvb_size = kms);
- }
- RETURN(0);
- }
-
- if (size > 0)
- stripe = lov_stripe_number(lsm, size - 1);
- kms = lov_size_to_stripe(lsm, size, stripe);
- loi = lsm->lsm_oinfo[stripe];
-
- CDEBUG(D_INODE, "stripe %d KMS %sincreasing "LPU64"->"LPU64"\n",
- stripe, kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms);
- if (kms > loi->loi_kms)
- loi_kms_set(loi, kms);
-
- RETURN(0);
-}
-
-void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
- struct lov_stripe_md *lsm, int stripeno, int *set)
-{
- valid &= src->o_valid;
-
- if (*set) {
- if (valid & OBD_MD_FLSIZE) {
- /* this handles sparse files properly */
- obd_size lov_size;
-
- lov_size = lov_stripe_size(lsm, src->o_size, stripeno);
- if (lov_size > tgt->o_size)
- tgt->o_size = lov_size;
- }
- if (valid & OBD_MD_FLBLOCKS)
- tgt->o_blocks += src->o_blocks;
- if (valid & OBD_MD_FLBLKSZ)
- tgt->o_blksize += src->o_blksize;
- if (valid & OBD_MD_FLCTIME && tgt->o_ctime < src->o_ctime)
- tgt->o_ctime = src->o_ctime;
- /* Only mtime from OSTs are merged here, as they cannot be set
- in past (only MDS's mtime can) do not look at ctime. */
- if (valid & OBD_MD_FLMTIME && tgt->o_mtime < src->o_mtime)
- tgt->o_mtime = src->o_mtime;
- } else {
- memcpy(tgt, src, sizeof(*tgt));
- tgt->o_id = lsm->lsm_object_id;
- if (valid & OBD_MD_FLSIZE)
- tgt->o_size = lov_stripe_size(lsm,src->o_size,stripeno);
- }
- *set += 1;
-}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff