* GPL HEADER END
*/
/*
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2012, 2013, Intel Corporation.
* Use is subject to license terms.
*
- * Author: Johann Lombardi <johann@whamcloud.com>
- * Author: Niu Yawei <niu@whamcloud.com>
+ * Author: Johann Lombardi <johann.lombardi@intel.com>
+ * Author: Niu Yawei <yawei.niu@intel.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
#define DEBUG_SUBSYSTEM S_LQUOTA
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
#include "lquota_internal.h"
-static struct dt_object_format dt_acct_format = {
- .dof_type = DFT_INDEX,
- .u.dof_idx.di_feat = &dt_acct_features
+struct kmem_cache *lqe_kmem;
+
+struct lu_kmem_descr lquota_caches[] = {
+ {
+ .ckd_cache = &lqe_kmem,
+ .ckd_name = "lqe_kmem",
+ .ckd_size = sizeof(struct lquota_entry)
+ },
+ {
+ .ckd_cache = NULL
+ }
};
+/* register lquota key */
+LU_KEY_INIT_FINI(lquota, struct lquota_thread_info);
+LU_CONTEXT_KEY_DEFINE(lquota, LCT_MD_THREAD | LCT_DT_THREAD | LCT_LOCAL);
+LU_KEY_INIT_GENERIC(lquota);
+
/**
* Look-up accounting object to collect space usage information for user
* or group.
*
- * \param env - is the environment passed by the caller
- * \param dev - is the dt_device storing the accounting object
- * \param oid - is the object id of the accounting object to initialize, must be
- * either ACCT_USER_OID or ACCT_GROUP_OID.
+ * \param env - is the environment passed by the caller
+ * \param dev - is the dt_device storing the accounting object
+ * \param type - is the quota type, either USRQUOTA or GRPQUOTA
*/
struct dt_object *acct_obj_lookup(const struct lu_env *env,
- struct dt_device *dev, __u32 oid)
+ struct dt_device *dev, int type)
{
- struct dt_object *obj = NULL;
- struct lu_fid fid;
- struct lu_attr attr;
- int rc;
+ struct lquota_thread_info *qti = lquota_info(env);
+ struct dt_object *obj = NULL;
ENTRY;
- memset(&attr, 0, sizeof(attr));
- attr.la_valid = LA_MODE;
- attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR;
- lu_local_obj_fid(&fid, oid);
+ lu_local_obj_fid(&qti->qti_fid,
+ type == USRQUOTA ? ACCT_USER_OID : ACCT_GROUP_OID);
- /* lookup/create the accounting object */
- obj = dt_find_or_create(env, dev, &fid, &dt_acct_format, &attr);
+ /* lookup the accounting object */
+ obj = dt_locate(env, dev, &qti->qti_fid);
if (IS_ERR(obj))
RETURN(obj);
+ if (!dt_object_exists(obj)) {
+ lu_object_put(env, &obj->do_lu);
+ RETURN(ERR_PTR(-ENOENT));
+ }
+
if (obj->do_index_ops == NULL) {
+ int rc;
+
/* set up indexing operations */
rc = obj->do_ops->do_index_try(env, obj, &dt_acct_features);
if (rc) {
+ CERROR("%s: failed to set up indexing operations for %s"
+ " acct object rc:%d\n",
+ dev->dd_lu_dev.ld_obd->obd_name,
+ QTYPE_NAME(type), rc);
+ lu_object_put(env, &obj->do_lu);
+ RETURN(ERR_PTR(rc));
+ }
+ }
+ RETURN(obj);
+}
+
+/**
+ * Initialize slave index object to collect local quota limit for user or group.
+ *
+ * \param env - is the environment passed by the caller
+ * \param dev - is the dt_device storing the slave index object
+ * \param type - is the quota type, either USRQUOTA or GRPQUOTA
+ */
+static struct dt_object *quota_obj_lookup(const struct lu_env *env,
+ struct dt_device *dev, int type)
+{
+ struct lquota_thread_info *qti = lquota_info(env);
+ struct dt_object *obj = NULL;
+ ENTRY;
+
+ qti->qti_fid.f_seq = FID_SEQ_QUOTA;
+ qti->qti_fid.f_oid = type == USRQUOTA ? LQUOTA_USR_OID : LQUOTA_GRP_OID;
+ qti->qti_fid.f_ver = 0;
+
+ /* lookup the quota object */
+ obj = dt_locate(env, dev, &qti->qti_fid);
+ if (IS_ERR(obj))
+ RETURN(obj);
+
+ if (!dt_object_exists(obj)) {
+ lu_object_put(env, &obj->do_lu);
+ RETURN(ERR_PTR(-ENOENT));
+ }
+
+ if (obj->do_index_ops == NULL) {
+ int rc;
+
+ /* set up indexing operations */
+ rc = obj->do_ops->do_index_try(env, obj,
+ &dt_quota_slv_features);
+ if (rc) {
+ CERROR("%s: failed to set up indexing operations for %s"
+ " slave index object rc:%d\n",
+ dev->dd_lu_dev.ld_obd->obd_name,
+ QTYPE_NAME(type), rc);
lu_object_put(env, &obj->do_lu);
RETURN(ERR_PTR(rc));
}
int lquotactl_slv(const struct lu_env *env, struct dt_device *dev,
struct obd_quotactl *oqctl)
{
- struct acct_rec rec;
- __u64 key;
- struct dt_object *obj;
- int rc = 0;
+ struct lquota_thread_info *qti = lquota_info(env);
+ __u64 key;
+ struct dt_object *obj;
+ struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
+ int rc;
ENTRY;
if (oqctl->qc_cmd != Q_GETOQUOTA) {
/* as in many other places, dev->dd_lu_dev.ld_obd->obd_name
- * point to a valid obd_name, to be fixed in LU-1574 */
+ * point to an invalid obd_name, to be fixed in LU-1574 */
CERROR("%s: Unsupported quotactl command: %x\n",
dev->dd_lu_dev.ld_obd->obd_name, oqctl->qc_cmd);
RETURN(-EOPNOTSUPP);
}
- if (oqctl->qc_type == USRQUOTA)
- obj = acct_obj_lookup(env, dev, ACCT_USER_OID);
- else if (oqctl->qc_type == GRPQUOTA)
- obj = acct_obj_lookup(env, dev, ACCT_GROUP_OID);
- else
+ if (oqctl->qc_type != USRQUOTA && oqctl->qc_type != GRPQUOTA)
/* no support for directory quota yet */
RETURN(-EOPNOTSUPP);
+ /* qc_id is a 32-bit field while a key has 64 bits */
+ key = oqctl->qc_id;
+
+ /* Step 1: collect accounting information */
+
+ obj = acct_obj_lookup(env, dev, oqctl->qc_type);
if (IS_ERR(obj))
RETURN(-EOPNOTSUPP);
if (obj->do_index_ops == NULL)
GOTO(out, rc = -EINVAL);
- /* qc_id is a 32-bit field while a key has 64 bits */
- key = oqctl->qc_id;
-
/* lookup record storing space accounting information for this ID */
- rc = dt_lookup(env, obj, (struct dt_rec *)&rec, (struct dt_key *)&key,
- BYPASS_CAPA);
+ rc = dt_lookup(env, obj, (struct dt_rec *)&qti->qti_acct_rec,
+ (struct dt_key *)&key, BYPASS_CAPA);
if (rc < 0)
GOTO(out, rc);
memset(&oqctl->qc_dqblk, 0, sizeof(struct obd_dqblk));
- oqctl->qc_dqblk.dqb_curspace = rec.bspace;
- oqctl->qc_dqblk.dqb_curinodes = rec.ispace;
- oqctl->qc_dqblk.dqb_valid = QIF_USAGE;
- /* TODO: must set {hard,soft}limit and grace time */
+ dqblk->dqb_curspace = qti->qti_acct_rec.bspace;
+ dqblk->dqb_curinodes = qti->qti_acct_rec.ispace;
+ dqblk->dqb_valid = QIF_USAGE;
+
+ lu_object_put(env, &obj->do_lu);
+
+ /* Step 2: collect enforcement information */
+
+ obj = quota_obj_lookup(env, dev, oqctl->qc_type);
+ if (IS_ERR(obj))
+ RETURN(0);
+ if (obj->do_index_ops == NULL)
+ GOTO(out, rc = 0);
+
+ memset(&qti->qti_slv_rec, 0, sizeof(qti->qti_slv_rec));
+ /* lookup record storing enforcement information for this ID */
+ rc = dt_lookup(env, obj, (struct dt_rec *)&qti->qti_slv_rec,
+ (struct dt_key *)&key, BYPASS_CAPA);
+ if (rc < 0 && rc != -ENOENT)
+ GOTO(out, rc = 0);
+
+ if (lu_device_is_md(dev->dd_lu_dev.ld_site->ls_top_dev)) {
+ dqblk->dqb_ihardlimit = qti->qti_slv_rec.qsr_granted;
+ dqblk->dqb_bhardlimit = 0;
+ } else {
+ dqblk->dqb_ihardlimit = 0;
+ dqblk->dqb_bhardlimit = qti->qti_slv_rec.qsr_granted;
+ }
+ dqblk->dqb_valid |= QIF_LIMITS;
- EXIT;
+ GOTO(out, rc = 0);
out:
lu_object_put(env, &obj->do_lu);
return rc;
}
EXPORT_SYMBOL(lquotactl_slv);
+
+/**
+ * Helper routine returning the FID associated with the global index storing
+ * quota settings for the storage pool \pool_id, resource type \pool_type and
+ * the quota type \quota_type.
+ */
+void lquota_generate_fid(struct lu_fid *fid, int pool_id, int pool_type,
+ int quota_type)
+{
+ __u8 qtype;
+
+ qtype = (quota_type == USRQUOTA) ? LQUOTA_TYPE_USR : LQUOTA_TYPE_GRP;
+
+ fid->f_seq = FID_SEQ_QUOTA_GLB;
+ fid->f_oid = (qtype << 24) | (pool_type << 16) | (__u16)pool_id;
+ fid->f_ver = 0;
+}
+
+/**
+ * Helper routine used to extract pool ID, pool type and quota type from a
+ * given FID.
+ */
+int lquota_extract_fid(const struct lu_fid *fid, int *pool_id, int *pool_type,
+ int *quota_type)
+{
+ unsigned int tmp;
+ ENTRY;
+
+ if (fid->f_seq != FID_SEQ_QUOTA_GLB)
+ RETURN(-EINVAL);
+
+ if (pool_id != NULL) {
+ tmp = fid->f_oid & 0xffffU;
+ if (tmp != 0)
+ /* we only support pool ID 0 for the time being */
+ RETURN(-ENOTSUPP);
+ *pool_id = tmp;
+ }
+
+ if (pool_type != NULL) {
+ tmp = (fid->f_oid >> 16) & 0xffU;
+ if (tmp >= LQUOTA_LAST_RES)
+ RETURN(-ENOTSUPP);
+
+ *pool_type = tmp;
+ }
+
+ if (quota_type != NULL) {
+ tmp = fid->f_oid >> 24;
+ if (tmp >= LQUOTA_TYPE_MAX)
+ RETURN(-ENOTSUPP);
+
+ *quota_type = (tmp == LQUOTA_TYPE_USR) ? USRQUOTA : GRPQUOTA;
+ }
+
+ RETURN(0);
+}
+
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0)
+/* Index features supported by the global index objects.
+ * We actually use one dt_index_features structure for each quota combination
+ * of quota type x [inode, block] to allow the ldiskfs OSD to recognize those
+ * objects and to handle the conversion from the old administrative quota file
+ * format */
+struct dt_index_features dt_quota_iusr_features;
+EXPORT_SYMBOL(dt_quota_iusr_features);
+struct dt_index_features dt_quota_busr_features;
+EXPORT_SYMBOL(dt_quota_busr_features);
+struct dt_index_features dt_quota_igrp_features;
+EXPORT_SYMBOL(dt_quota_igrp_features);
+struct dt_index_features dt_quota_bgrp_features;
+EXPORT_SYMBOL(dt_quota_bgrp_features);
+
+/**
+ * Helper routine returning the right index feature structure to be used
+ * depending on the FID of the global index.
+ */
+const struct dt_index_features *glb_idx_feature(struct lu_fid *fid)
+{
+ int res_type, quota_type, rc;
+
+ rc = lquota_extract_fid(fid, NULL, &res_type, "a_type);
+ if (rc)
+ return ERR_PTR(rc);
+
+ if (quota_type == USRQUOTA) {
+ if (res_type == LQUOTA_RES_MD)
+ return &dt_quota_iusr_features;
+ else
+ return &dt_quota_busr_features;
+ } else {
+ if (res_type == LQUOTA_RES_MD)
+ return &dt_quota_igrp_features;
+ else
+ return &dt_quota_bgrp_features;
+ }
+}
+#else
+#warning "remove old quota compatibility code"
+#endif
+
+static int __init init_lquota(void)
+{
+ int rc;
+ ENTRY;
+
+ lquota_key_init_generic(&lquota_thread_key, NULL);
+ lu_context_key_register(&lquota_thread_key);
+
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0)
+ dt_quota_iusr_features = dt_quota_busr_features = dt_quota_glb_features;
+ dt_quota_igrp_features = dt_quota_bgrp_features = dt_quota_glb_features;
+#else
+#warning "remove old quota compatibility code"
+#endif
+
+ rc = lu_kmem_init(lquota_caches);
+ if (rc)
+ GOTO(out_key, rc);
+
+ rc = qmt_glb_init();
+ if (rc)
+ GOTO(out_caches, rc);
+
+ rc = qsd_glb_init();
+ if (rc)
+ GOTO(out_qmt, rc);
+
+ RETURN(0);
+
+out_qmt:
+ qmt_glb_fini();
+out_caches:
+ lu_kmem_fini(lquota_caches);
+out_key:
+ lu_context_key_degister(&lquota_thread_key);
+ return rc;
+}
+
+static void exit_lquota(void)
+{
+ qsd_glb_fini();
+ qmt_glb_fini();
+ lu_kmem_fini(lquota_caches);
+ lu_context_key_degister(&lquota_thread_key);
+}
+
+MODULE_AUTHOR("Intel Corporation <http://www.intel.com/>");
+MODULE_DESCRIPTION("Lustre Quota");
+MODULE_LICENSE("GPL");
+
+cfs_module(lquota, "2.4.0", init_lquota, exit_lquota);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff