-/* -*- 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) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <linux/seq_file.h>
#include <lustre_fsfilt.h>
+#include "lquota_internal.h"
#include "quota_internal.h"
-#ifdef HAVE_QUOTA_SUPPORT
-
#ifdef LPROCFS
+/* structure allocated at seq_open time and release when seq_release is called.
+ * It is passed to seq_start/stop/next/show which can thus use the same lu_env
+ * to be used with the iterator API */
+struct lquota_procfs {
+ struct dt_object *lqp_obj;
+ struct lu_env lqp_env;
+};
+
+/* global shared environment */
+static void *lprocfs_quota_seq_start(struct seq_file *p, loff_t *pos)
+{
+ struct lquota_procfs *lqp = p->private;
+ const struct dt_it_ops *iops;
+ struct dt_it *it;
+ loff_t offset = *pos;
+ int rc;
+
+ LASSERT(lqp);
+
+ if (offset == 0)
+ return SEQ_START_TOKEN;
+ offset--;
+
+ if (lqp->lqp_obj == NULL)
+ /* accounting not enabled. */
+ return NULL;
+
+ /* initialize iterator */
+ iops = &lqp->lqp_obj->do_index_ops->dio_it;
+ it = iops->init(&lqp->lqp_env, lqp->lqp_obj, 0, BYPASS_CAPA);
+ if (IS_ERR(it)) {
+ CERROR("%s: failed to initialize iterator: rc = %ld\n",
+ lqp->lqp_obj->do_lu.lo_dev->ld_obd->obd_name,
+ PTR_ERR(it));
+ return NULL;
+ }
+
+ /* move on to the first valid record */
+ rc = iops->load(&lqp->lqp_env, it, 0);
+ if (rc < 0) { /* Error */
+ goto not_found;
+ } else if (rc == 0) {
+ /*
+ * Iterator didn't find record with exactly the key requested.
+ *
+ * It is currently either
+ *
+ * - positioned above record with key less than
+ * requested - skip it.
+ * - or not positioned at all (is in IAM_IT_SKEWED
+ * state) - position it on the next item.
+ */
+ rc = iops->next(&lqp->lqp_env, it);
+ if (rc != 0)
+ goto not_found;
+ }
+ while (offset--) {
+ rc = iops->next(&lqp->lqp_env, it);
+ if (rc != 0) /* Error or reach the end */
+ goto not_found;
+ }
+ return it;
+
+not_found:
+ iops->put(&lqp->lqp_env, it);
+ iops->fini(&lqp->lqp_env, it);
+ return NULL;
+}
+
+static void lprocfs_quota_seq_stop(struct seq_file *p, void *v)
+{
+ struct lquota_procfs *lqp = p->private;
+ const struct dt_it_ops *iops;
+ struct dt_it *it;
+
+ if (lqp->lqp_obj == NULL || v == NULL || v == SEQ_START_TOKEN)
+ return;
+
+ iops = &lqp->lqp_obj->do_index_ops->dio_it;
+ it = (struct dt_it *)v;
+ /* if something wrong happened during ->seq_show, we need to release
+ * the iterator here */
+ iops->put(&lqp->lqp_env, it);
+ iops->fini(&lqp->lqp_env, it);
+}
+
+static void *lprocfs_quota_seq_next(struct seq_file *p, void *v, loff_t *pos)
+{
+ struct lquota_procfs *lqp = p->private;
+ const struct dt_it_ops *iops;
+ struct dt_it *it;
+ int rc;
+
+ LASSERT(lqp);
+
+ ++*pos;
+ if (lqp->lqp_obj == NULL)
+ return NULL;
+
+ if (v == SEQ_START_TOKEN)
+ return lprocfs_quota_seq_start(p, pos);
+
+ iops = &lqp->lqp_obj->do_index_ops->dio_it;
+ it = (struct dt_it *)v;
+
+ rc = iops->next(&lqp->lqp_env, it);
+ if (rc == 0)
+ return it;
+
+ if (rc < 0)
+ CERROR("%s: seq_next failed: rc = %d\n",
+ lqp->lqp_obj->do_lu.lo_dev->ld_obd->obd_name, rc);
+
+ /* Reach the end or error */
+ iops->put(&lqp->lqp_env, it);
+ iops->fini(&lqp->lqp_env, it);
+ return NULL;
+}
+
+/*
+ * Output example:
+ *
+ * user_accounting:
+ * - id: 0
+ * usage: { inodes: 209, bytes: 26161152 }
+ * - id: 840000038
+ * usage: { inodes: 1, bytes: 10485760 }
+ */
+static int lprocfs_quota_seq_show(struct seq_file *p, void *v)
+{
+ struct lquota_procfs *lqp = p->private;
+ const struct dt_it_ops *iops;
+ struct dt_it *it;
+ struct dt_key *key;
+ struct acct_rec rec;
+ int rc;
+
+ LASSERT(lqp);
+ if (lqp->lqp_obj == NULL) {
+ seq_printf(p, "not supported\n");
+ return 0;
+ }
+
+ if (v == SEQ_START_TOKEN) {
+ const struct lu_fid *fid = lu_object_fid(&lqp->lqp_obj->do_lu);
+
+ LASSERT(fid_is_acct(fid));
+ if (fid_oid(fid) == ACCT_USER_OID)
+ seq_printf(p, "user_accounting:\n");
+ else
+ seq_printf(p, "group_accounting:\n");
+ return 0;
+ }
+
+ iops = &lqp->lqp_obj->do_index_ops->dio_it;
+ it = (struct dt_it *)v;
+
+ key = iops->key(&lqp->lqp_env, it);
+ if (IS_ERR(key)) {
+ CERROR("%s: failed to get key: rc = %ld\n",
+ lqp->lqp_obj->do_lu.lo_dev->ld_obd->obd_name,
+ PTR_ERR(key));
+ return PTR_ERR(key);
+ }
+
+ rc = iops->rec(&lqp->lqp_env, it, (struct dt_rec *)&rec, 0);
+ if (rc) {
+ CERROR("%s: failed to get rec: rc = %d\n",
+ lqp->lqp_obj->do_lu.lo_dev->ld_obd->obd_name, rc);
+ return rc;
+ }
+
+ seq_printf(p, "- %-8s %llu\n", "id:", *((__u64 *)key));
+ seq_printf(p, " %-8s { inodes: %20"LPF64"u, bytes: %20"LPF64"u }\n",
+ "usage:", rec.ispace, rec.bspace);
+ return 0;
+}
+
+struct seq_operations lprocfs_quota_seq_sops = {
+ .start = lprocfs_quota_seq_start,
+ .stop = lprocfs_quota_seq_stop,
+ .next = lprocfs_quota_seq_next,
+ .show = lprocfs_quota_seq_show,
+};
+
+static int lprocfs_quota_seq_open(struct inode *inode, struct file *file)
+{
+ struct proc_dir_entry *dp = PDE(inode);
+ struct seq_file *seq;
+ int rc;
+ struct lquota_procfs *lqp;
+
+ /* Allocate quota procfs data. This structure will be passed to
+ * seq_start/stop/next/show via seq->private */
+ OBD_ALLOC_PTR(lqp);
+ if (lqp == NULL)
+ return -ENOMEM;
+
+ /* store pointer to object we would like to iterate over */
+ lqp->lqp_obj = (struct dt_object *)dp->data;
+
+ /* Initialize the common environment to be used in the seq operations */
+ rc = lu_env_init(&lqp->lqp_env, LCT_LOCAL);
+ if (rc) {
+ CERROR("%s: error initializing procfs quota env: rc = %d\n",
+ lqp->lqp_obj->do_lu.lo_dev->ld_obd->obd_name, rc);
+ goto out_lqp;
+ }
+
+ if (LPROCFS_ENTRY_AND_CHECK(dp)) {
+ rc = -ENOENT;
+ goto out_env;
+ }
+
+ rc = seq_open(file, &lprocfs_quota_seq_sops);
+ if (rc)
+ goto out_lprocfs;
+
+ seq = file->private_data;
+ seq->private = lqp;
+ return 0;
+
+out_lprocfs:
+ LPROCFS_EXIT();
+out_env:
+ lu_env_fini(&lqp->lqp_env);
+out_lqp:
+ OBD_FREE_PTR(lqp);
+ return rc;
+}
+
+static int lprocfs_quota_seq_release(struct inode *inode, struct file *file)
+{
+ struct seq_file *seq = file->private_data;
+ struct lquota_procfs *lqp = seq->private;
+
+ LPROCFS_EXIT();
+
+ LASSERT(lqp);
+ lu_env_fini(&lqp->lqp_env);
+ OBD_FREE_PTR(lqp);
+
+ return seq_release(inode, file);
+}
+
+struct file_operations lprocfs_quota_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = lprocfs_quota_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = lprocfs_quota_seq_release,
+};
+
+int lprocfs_quota_rd_type_dumb(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_quota_rd_type_dumb);
+
+int lprocfs_quota_wr_type_dumb(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ return count;
+}
+EXPORT_SYMBOL(lprocfs_quota_wr_type_dumb);
+
int lprocfs_quota_rd_bunit(char *page, char **start, off_t off, int count,
int *eof, void *data)
{
struct obd_device *obd = (struct obd_device *)data;
char stype[MAX_STYPE_SIZE + 1] = "";
int oq_type;
- struct obd_device_target *obt;
LASSERT(obd != NULL);
- obt = &obd->u.obt;
-
/* Collect the needed information */
oq_type = obd->u.obt.obt_qctxt.lqc_flags;
}
EXPORT_SYMBOL(lprocfs_quota_rd_type);
-static int auto_quota_on(struct obd_device *obd, int type,
- struct super_block *sb, int is_master)
+/*
+ * generic_quota_on is very lazy and tolerant about current quota settings
+ * @global means to turn on quotas on each OST additionally to local quotas;
+ * should not be called from filter_quota_ctl on MDS nodes (as it starts
+ * admin quotas on MDS nodes).
+ */
+int generic_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl, int global)
{
- struct obd_quotactl *oqctl;
- struct lvfs_run_ctxt saved;
- int rc = 0, rc1 = 0, id;
struct obd_device_target *obt = &obd->u.obt;
- struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
- struct mds_obd *mds = NULL;
- ENTRY;
-
- LASSERT(type == USRQUOTA || type == GRPQUOTA || type == UGQUOTA);
-
- OBD_ALLOC_PTR(oqctl);
- if (!oqctl)
- RETURN(-ENOMEM);
+ struct lvfs_run_ctxt saved;
+ int id, is_master, rc = 0, local; /* means we need a local quotaon */
cfs_down(&obt->obt_quotachecking);
- id = UGQUOTA2LQC(type);
- /* quota already turned on */
- if ((obt->obt_qctxt.lqc_flags & id) == id)
- GOTO(out, rc);
-
- if (obt->obt_qctxt.lqc_immutable) {
- LCONSOLE_ERROR("Failed to turn Quota on, immutable mode "
- "(is SOM enabled?)\n");
- GOTO(out, rc = -ECANCELED);
- }
+ push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
+ id = UGQUOTA2LQC(oqctl->qc_type);
+ local = (obt->obt_qctxt.lqc_flags & id) != id;
- oqctl->qc_type = type;
oqctl->qc_cmd = Q_QUOTAON;
oqctl->qc_id = obt->obt_qfmt;
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-
+ is_master = !strcmp(obd->obd_type->typ_name, LUSTRE_MDS_NAME);
if (is_master) {
- mds = &obd->u.mds;
- cfs_down(&mds->mds_qonoff_sem);
- /* turn on cluster wide quota */
- rc1 = mds_admin_quota_on(obd, oqctl);
- if (rc1 && rc1 != -EALREADY) {
- CDEBUG_LIMIT(rc1 == -ENOENT ? D_QUOTA : D_ERROR,
- "%s: auto-enable admin quota failed with "
- "rc=%d\n", obd->obd_name, rc1);
- GOTO(out_ctxt, rc1);
+ cfs_down_write(&obd->u.mds.mds_qonoff_sem);
+ if (local) {
+ /* turn on cluster wide quota */
+ rc = mds_admin_quota_on(obd, oqctl);
+ if (rc && rc != -ENOENT)
+ CERROR("%s: %s admin quotaon failed. rc=%d\n",
+ obd->obd_name, global ? "global":"local",
+ rc);
}
}
- /* turn on local quota */
- rc = fsfilt_quotactl(obd, sb, oqctl);
- if (!rc) {
- obt->obt_qctxt.lqc_flags |= UGQUOTA2LQC(type);
- build_lqs(obd);
- } else if (rc == -EBUSY && quota_is_on(qctxt, oqctl)) {
- CWARN("%s: mds local quota[%d] is on already\n",
- obd->obd_name, oqctl->qc_type);
- rc = -EALREADY;
- } else {
- CDEBUG_LIMIT(rc == -ENOENT ? D_QUOTA : D_ERROR,
- "%s: auto-enable local quota failed with rc=%d\n",
- obd->obd_name, rc);
- if (rc1 == -EALREADY) {
- oqctl->qc_cmd = Q_QUOTAOFF;
- mds_admin_quota_off(obd, oqctl);
+ if (rc == 0) {
+ if (local) {
+ rc = fsfilt_quotactl(obd, obt->obt_sb, oqctl);
+ if (rc) {
+ if (rc != -ENOENT)
+ CERROR("%s: %s quotaon failed with"
+ " rc=%d\n", obd->obd_name,
+ global ? "global" : "local", rc);
+ } else {
+ obt->obt_qctxt.lqc_flags |= UGQUOTA2LQC(oqctl->qc_type);
+ build_lqs(obd);
+ }
}
- if (rc == -ENOENT)
- CWARN("%s: quotaon failed because quota files don't "
- "exist, please run quotacheck firstly\n",
- obd->obd_name);
- GOTO(out_ctxt, rc);
+ if (rc == 0 && global && is_master)
+ rc = obd_quotactl(obd->u.mds.mds_lov_exp, oqctl);
}
- EXIT;
+ if (is_master)
+ cfs_up_write(&obd->u.mds.mds_qonoff_sem);
-out_ctxt:
- if (mds != NULL)
- cfs_up(&mds->mds_qonoff_sem);
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-
-out:
cfs_up(&obt->obt_quotachecking);
- OBD_FREE_PTR(oqctl);
+
+ CDEBUG(D_QUOTA, "%s: quotaon type:master:global:local:flags:rc "
+ "%u:%d:%d:%d:%lu:%d\n",
+ obd->obd_name, oqctl->qc_type, is_master, global, local,
+ obt->obt_qctxt.lqc_flags, rc);
+
return rc;
}
+static int auto_quota_on(struct obd_device *obd, int type)
+{
+ struct obd_quotactl *oqctl;
+ int rc;
+ ENTRY;
+
+ LASSERT(type == USRQUOTA || type == GRPQUOTA || type == UGQUOTA);
+
+ OBD_ALLOC_PTR(oqctl);
+ if (!oqctl)
+ RETURN(-ENOMEM);
+
+ oqctl->qc_type = type;
+
+ rc = generic_quota_on(obd, oqctl, 0);
+
+ OBD_FREE_PTR(oqctl);
+ RETURN(rc);
+}
+
int lprocfs_quota_wr_type(struct file *file, const char *buffer,
unsigned long count, void *data)
{
struct obd_device *obd = (struct obd_device *)data;
- struct obd_device_target *obt;
- int type = 0, is_mds;
+ int type = 0;
unsigned long i;
char stype[MAX_STYPE_SIZE + 1] = "";
LASSERT(obd != NULL);
- obt = &obd->u.obt;
-
- is_mds = !strcmp(obd->obd_type->typ_name, LUSTRE_MDS_NAME);
-
if (count > MAX_STYPE_SIZE)
return -EINVAL;
}
if (type != 0) {
- int rc = auto_quota_on(obd, type - 1, obt->obt_sb, is_mds);
+ int rc = auto_quota_on(obd, type - 1);
if (rc && rc != -EALREADY && rc != -ENOENT)
return rc;
}
#endif /* LPROCFS */
-#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff