/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Lustre Light block IO
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Copyright (c) 2002-2004 Cluster File Systems, Inc.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see [sun.com URL with a
+ * copy of GPLv2].
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * 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.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/liblustre/rw.c
+ *
+ * Lustre Light block IO
*/
#define DEBUG_SUBSYSTEM S_LLITE
#include <fcntl.h>
#include <sys/uio.h>
+#include <sysio.h>
#ifdef HAVE_XTIO_H
#include <xtio.h>
#endif
-#include <sysio.h>
#include <fs.h>
#include <mount.h>
#include <inode.h>
char name[16];
struct ldlm_lock *lock;
struct lov_stripe_md *lsm;
- } key = { .name = "lock_to_stripe", .lock = lock, .lsm = lsm };
+ } key = { .name = KEY_LOCK_TO_STRIPE, .lock = lock, .lsm = lsm };
__u32 stripe, vallen = sizeof(stripe);
int rc;
ENTRY;
RETURN(stripe);
}
-static int llu_extent_lock_callback(struct ldlm_lock *lock,
- struct ldlm_lock_desc *new, void *data,
- int flag)
+int llu_extent_lock_cancel_cb(struct ldlm_lock *lock,
+ struct ldlm_lock_desc *new, void *data,
+ int flag)
{
struct lustre_handle lockh = { 0 };
int rc;
stripe = llu_lock_to_stripe_offset(inode, lock);
lock_res_and_lock(lock);
kms = ldlm_extent_shift_kms(lock,
- lsm->lsm_oinfo[stripe].loi_kms);
+ lsm->lsm_oinfo[stripe]->loi_kms);
unlock_res_and_lock(lock);
- if (lsm->lsm_oinfo[stripe].loi_kms != kms)
+ if (lsm->lsm_oinfo[stripe]->loi_kms != kms)
LDLM_DEBUG(lock, "updating kms from "LPU64" to "LPU64,
- lsm->lsm_oinfo[stripe].loi_kms, kms);
- lsm->lsm_oinfo[stripe].loi_kms = kms;
+ lsm->lsm_oinfo[stripe]->loi_kms, kms);
+ lsm->lsm_oinfo[stripe]->loi_kms = kms;
iput:
I_RELE(inode);
break;
struct inode *inode = llu_inode_from_lock(lock);
struct llu_inode_info *lli;
struct ost_lvb *lvb;
- int size[2] = { sizeof(struct ptlrpc_body), sizeof(*lvb) };
int rc, stripe = 0;
ENTRY;
if (lli->lli_smd->lsm_stripe_count > 1)
stripe = llu_lock_to_stripe_offset(inode, lock);
- rc = lustre_pack_reply(req, 2, size, NULL);
+ req_capsule_extend(&req->rq_pill, &RQF_LDLM_GL_CALLBACK);
+ req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
+ sizeof(*lvb));
+ rc = req_capsule_server_pack(&req->rq_pill);
if (rc) {
- CERROR("lustre_pack_reply: %d\n", rc);
+ CERROR("failed pack reply: %d\n", rc);
GOTO(iput, rc);
}
- lvb = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*lvb));
- lvb->lvb_size = lli->lli_smd->lsm_oinfo[stripe].loi_kms;
+ lvb = req_capsule_server_get(&req->rq_pill, &RMF_DLM_LVB);
+ lvb->lvb_size = lli->lli_smd->lsm_oinfo[stripe]->loi_kms;
- LDLM_DEBUG(lock, "i_size: %llu -> stripe number %u -> kms "LPU64,
- (long long)llu_i2stat(inode)->st_size, stripe,lvb->lvb_size);
+ LDLM_DEBUG(lock, "i_size: "LPU64" -> stripe number %u -> kms "LPU64,
+ (__u64)llu_i2stat(inode)->st_size, stripe,lvb->lvb_size);
iput:
I_RELE(inode);
out:
return rc;
}
+static int llu_merge_lvb(struct inode *inode)
+{
+ struct llu_inode_info *lli = llu_i2info(inode);
+ struct llu_sb_info *sbi = llu_i2sbi(inode);
+ struct intnl_stat *st = llu_i2stat(inode);
+ struct ost_lvb lvb;
+ int rc;
+ ENTRY;
+
+ inode_init_lvb(inode, &lvb);
+ rc = obd_merge_lvb(sbi->ll_dt_exp, lli->lli_smd, &lvb, 0);
+ st->st_size = lvb.lvb_size;
+ st->st_blocks = lvb.lvb_blocks;
+ /* handle st_blocks overflow gracefully */
+ if (st->st_blocks < lvb.lvb_blocks)
+ st->st_blocks = ~0UL;
+ st->st_mtime = lvb.lvb_mtime;
+ st->st_atime = lvb.lvb_atime;
+ st->st_ctime = lvb.lvb_ctime;
+
+ RETURN(rc);
+}
+
+int llu_local_size(struct inode *inode)
+{
+ ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
+ struct llu_inode_info *lli = llu_i2info(inode);
+ struct llu_sb_info *sbi = llu_i2sbi(inode);
+ struct lustre_handle lockh = { 0 };
+ int flags = 0;
+ int rc;
+ ENTRY;
+
+ if (lli->lli_smd->lsm_stripe_count == 0)
+ RETURN(0);
+
+ rc = obd_match(sbi->ll_dt_exp, lli->lli_smd, LDLM_EXTENT,
+ &policy, LCK_PR, &flags, inode, &lockh);
+ if (rc < 0)
+ RETURN(rc);
+ else if (rc == 0)
+ RETURN(-ENODATA);
+
+ rc = llu_merge_lvb(inode);
+ obd_cancel(sbi->ll_dt_exp, lli->lli_smd, LCK_PR, &lockh);
+ RETURN(rc);
+}
+
/* NB: lov_merge_size will prefer locally cached writes if they extend the
* file (because it prefers KMS over RSS when larger) */
int llu_glimpse_size(struct inode *inode)
struct intnl_stat *st = llu_i2stat(inode);
struct llu_sb_info *sbi = llu_i2sbi(inode);
struct lustre_handle lockh = { 0 };
- struct obd_enqueue_info einfo = { 0 };
+ struct ldlm_enqueue_info einfo = { 0 };
struct obd_info oinfo = { { { 0 } } };
- struct ost_lvb lvb;
int rc;
ENTRY;
- CDEBUG(D_DLMTRACE, "Glimpsing inode %llu\n", (long long)st->st_ino);
+ /* If size is cached on the mds, skip glimpse. */
+ if (lli->lli_flags & LLIF_MDS_SIZE_LOCK)
+ RETURN(0);
+
+ CDEBUG(D_DLMTRACE, "Glimpsing inode "LPU64"\n", (__u64)st->st_ino);
if (!lli->lli_smd) {
- CDEBUG(D_DLMTRACE, "No objects for inode %llu\n",
- (long long)st->st_ino);
+ CDEBUG(D_DLMTRACE, "No objects for inode "LPU64"\n",
+ (__u64)st->st_ino);
RETURN(0);
}
einfo.ei_type = LDLM_EXTENT;
einfo.ei_mode = LCK_PR;
- einfo.ei_flags = LDLM_FL_HAS_INTENT;
- einfo.ei_cb_bl = llu_extent_lock_callback;
+ einfo.ei_cb_bl = osc_extent_blocking_cb;
einfo.ei_cb_cp = ldlm_completion_ast;
einfo.ei_cb_gl = llu_glimpse_callback;
einfo.ei_cbdata = inode;
oinfo.oi_policy.l_extent.end = OBD_OBJECT_EOF;
oinfo.oi_lockh = &lockh;
oinfo.oi_md = lli->lli_smd;
+ oinfo.oi_flags = LDLM_FL_HAS_INTENT;
- rc = obd_enqueue_rqset(sbi->ll_osc_exp, &oinfo, &einfo);
+ rc = obd_enqueue_rqset(sbi->ll_dt_exp, &oinfo, &einfo);
if (rc) {
CERROR("obd_enqueue returned rc %d, returning -EIO\n", rc);
RETURN(rc > 0 ? -EIO : rc);
}
- inode_init_lvb(inode, &lvb);
- obd_merge_lvb(sbi->ll_osc_exp, lli->lli_smd, &lvb, 0);
- st->st_size = lvb.lvb_size;
- st->st_blocks = lvb.lvb_blocks;
- st->st_mtime = lvb.lvb_mtime;
- st->st_atime = lvb.lvb_atime;
- st->st_ctime = lvb.lvb_ctime;
-
- CDEBUG(D_DLMTRACE, "glimpse: size: %llu, blocks: %llu\n",
- (long long)st->st_size, (long long)st->st_blocks);
+ rc = llu_merge_lvb(inode);
+ CDEBUG(D_DLMTRACE, "glimpse: size: "LPU64", blocks: "LPU64"\n",
+ (__u64)st->st_size, (__u64)st->st_blocks);
RETURN(rc);
}
{
struct llu_sb_info *sbi = llu_i2sbi(inode);
struct intnl_stat *st = llu_i2stat(inode);
- struct obd_enqueue_info einfo = { 0 };
+ struct ldlm_enqueue_info einfo = { 0 };
struct obd_info oinfo = { { { 0 } } };
struct ost_lvb lvb;
int rc;
RETURN(0);
CDEBUG(D_DLMTRACE, "Locking inode %llu, start "LPU64" end "LPU64"\n",
- (long long)st->st_ino, policy->l_extent.start,
+ (unsigned long long)st->st_ino, policy->l_extent.start,
policy->l_extent.end);
einfo.ei_type = LDLM_EXTENT;
einfo.ei_mode = mode;
- einfo.ei_flags = ast_flags;
- einfo.ei_cb_bl = llu_extent_lock_callback;
+ einfo.ei_cb_bl = osc_extent_blocking_cb;
einfo.ei_cb_cp = ldlm_completion_ast;
einfo.ei_cb_gl = llu_glimpse_callback;
einfo.ei_cbdata = inode;
oinfo.oi_policy = *policy;
oinfo.oi_lockh = lockh;
oinfo.oi_md = lsm;
+ oinfo.oi_flags = ast_flags;
- rc = obd_enqueue(sbi->ll_osc_exp, &oinfo, &einfo);
+ rc = obd_enqueue(sbi->ll_dt_exp, &oinfo, &einfo, NULL);
*policy = oinfo.oi_policy;
if (rc > 0)
rc = -EIO;
inode_init_lvb(inode, &lvb);
- obd_merge_lvb(sbi->ll_osc_exp, lsm, &lvb, 1);
+ obd_merge_lvb(sbi->ll_dt_exp, lsm, &lvb, 1);
if (policy->l_extent.start == 0 &&
policy->l_extent.end == OBD_OBJECT_EOF)
st->st_size = lvb.lvb_size;
(sbi->ll_flags & LL_SBI_NOLCK) || mode == LCK_NL)
RETURN(0);
- rc = obd_cancel(sbi->ll_osc_exp, lsm, mode, lockh);
+ rc = obd_cancel(sbi->ll_dt_exp, lsm, mode, lockh);
RETURN(rc);
}
RETURN(0);
}
+static struct obd_capa * llu_ap_lookup_capa(void *data, int cmd)
+{
+ return NULL;
+}
+
static struct obd_async_page_ops llu_async_page_ops = {
.ap_make_ready = NULL,
.ap_refresh_count = NULL,
.ap_fill_obdo = llu_ap_fill_obdo,
.ap_update_obdo = llu_ap_update_obdo,
.ap_completion = llu_ap_completion,
+ .ap_lookup_capa = llu_ap_lookup_capa,
};
static int llu_queue_pio(int cmd, struct llu_io_group *group,
rc = obd_prep_async_page(exp, lsm, NULL, page,
(obd_off)page->index << CFS_PAGE_SHIFT,
&llu_async_page_ops,
- llap, &llap->llap_cookie);
+ llap, &llap->llap_cookie,
+ 1 /* no cache in liblustre at all */,
+ NULL);
if (rc) {
LASSERT(rc < 0);
llap->llap_cookie = NULL;
RETURN(rc);
}
+
CDEBUG(D_CACHE, "llap %p page %p group %p obj off "LPU64"\n",
llap, page, llap->llap_cookie,
(obd_off)pages->index << CFS_PAGE_SHIFT);
if (!llap_cookie_size)
llap_cookie_size = obd_prep_async_page(llu_i2obdexp(inode),
NULL, NULL, NULL, 0,
- NULL, NULL, NULL);
+ NULL, NULL, NULL, 0,
+ NULL);
OBD_ALLOC(group, LLU_IO_GROUP_SIZE(maxpages));
if (!group)
static int max_io_pages(ssize_t len, int iovlen)
{
- return (((len + CFS_PAGE_SIZE -1) >> CFS_PAGE_SHIFT) + 2 + iovlen - 1);
+ return (((len + CFS_PAGE_SIZE -1) / CFS_PAGE_SIZE) + 2 + iovlen - 1);
}
static
err = oig_wait(iogroup->lig_oig);
if (err) {
- CERROR("sync error %d, data corruption possible\n", err);
+ CERROR("%s error: %s\n", is_read ? "read" : "write", strerror(-err));
GOTO(err_unlock, err);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff