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14 * in the LICENSE file that accompanied this code).
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18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
32 #define DEBUG_SUBSYSTEM S_LOV
34 #include <libcfs/libcfs.h>
35 #include <cl_object.h>
36 #include <obd_class.h>
37 #include "lov_internal.h"
39 /** Merge the lock value block(&lvb) attributes and KMS from each of the
40 * stripes in a file into a single lvb. It is expected that the caller
41 * initializes the current atime, mtime, ctime to avoid regressing a more
42 * uptodate time on the local client.
44 int lov_merge_lvb_kms(struct lov_stripe_md *lsm, int index,
47 struct lov_stripe_md_entry *lse = lsm->lsm_entries[index];
51 /* XXX: timestamps can be negative by sanity:test_39m,
53 s64 current_mtime = LLONG_MIN;
54 s64 current_atime = LLONG_MIN;
55 s64 current_ctime = LLONG_MIN;
59 assert_spin_locked(&lsm->lsm_lock);
60 LASSERT(lsm->lsm_lock_owner == current->pid);
61 for (i = 0; i < lse->lsme_stripe_count; i++) {
62 struct lov_oinfo *loi = lse->lsme_oinfo[i];
66 if (OST_LVB_IS_ERR(loi->loi_lvb.lvb_blocks)) {
67 rc = OST_LVB_GET_ERR(loi->loi_lvb.lvb_blocks);
71 if (loi->loi_kms_valid) {
72 attr->cat_kms_valid = 1;
73 tmpsize = loi->loi_kms;
77 lov_size = lov_stripe_size(lsm, index, tmpsize, i);
81 if (loi->loi_lvb.lvb_size > tmpsize)
82 tmpsize = loi->loi_lvb.lvb_size;
84 lov_size = lov_stripe_size(lsm, index, tmpsize, i);
87 /* merge blocks, mtime, atime */
88 blocks += loi->loi_lvb.lvb_blocks;
89 if (loi->loi_lvb.lvb_mtime > current_mtime)
90 current_mtime = loi->loi_lvb.lvb_mtime;
91 if (loi->loi_lvb.lvb_atime > current_atime)
92 current_atime = loi->loi_lvb.lvb_atime;
93 if (loi->loi_lvb.lvb_ctime > current_ctime)
94 current_ctime = loi->loi_lvb.lvb_ctime;
96 CDEBUG(D_INODE, "MDT ID "DOSTID" on OST[%u]: s=%llu (%d) m=%llu"
97 " a=%llu c=%llu b=%llu\n", POSTID(&lsm->lsm_oi),
98 loi->loi_ost_idx, loi->loi_lvb.lvb_size, loi->loi_kms_valid,
99 loi->loi_lvb.lvb_mtime, loi->loi_lvb.lvb_atime,
100 loi->loi_lvb.lvb_ctime, loi->loi_lvb.lvb_blocks);
105 attr->cat_size = size;
106 attr->cat_mtime = current_mtime;
107 attr->cat_atime = current_atime;
108 attr->cat_ctime = current_ctime;
109 attr->cat_blocks = blocks;