1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19 *
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2011, 2012, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 */
36 #define DEBUG_SUBSYSTEM S_CLASS
37
38 #include <linux/vfs.h>
39 #include "../include/obd_class.h"
40 #include "../include/lprocfs_status.h"
41 #include "mdc_internal.h"
42
max_rpcs_in_flight_show(struct kobject * kobj,struct attribute * attr,char * buf)43 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
44 struct attribute *attr,
45 char *buf)
46 {
47 int len;
48 struct obd_device *dev = container_of(kobj, struct obd_device,
49 obd_kobj);
50 struct client_obd *cli = &dev->u.cli;
51
52 client_obd_list_lock(&cli->cl_loi_list_lock);
53 len = sprintf(buf, "%u\n", cli->cl_max_rpcs_in_flight);
54 client_obd_list_unlock(&cli->cl_loi_list_lock);
55
56 return len;
57 }
58
max_rpcs_in_flight_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)59 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
60 struct attribute *attr,
61 const char *buffer,
62 size_t count)
63 {
64 struct obd_device *dev = container_of(kobj, struct obd_device,
65 obd_kobj);
66 struct client_obd *cli = &dev->u.cli;
67 int rc;
68 unsigned long val;
69
70 rc = kstrtoul(buffer, 10, &val);
71 if (rc)
72 return rc;
73
74 if (val < 1 || val > MDC_MAX_RIF_MAX)
75 return -ERANGE;
76
77 client_obd_list_lock(&cli->cl_loi_list_lock);
78 cli->cl_max_rpcs_in_flight = val;
79 client_obd_list_unlock(&cli->cl_loi_list_lock);
80
81 return count;
82 }
83 LUSTRE_RW_ATTR(max_rpcs_in_flight);
84
mdc_kuc_open(struct inode * inode,struct file * file)85 static int mdc_kuc_open(struct inode *inode, struct file *file)
86 {
87 return single_open(file, NULL, inode->i_private);
88 }
89
90 /* temporary for testing */
mdc_kuc_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)91 static ssize_t mdc_kuc_write(struct file *file,
92 const char __user *buffer,
93 size_t count, loff_t *off)
94 {
95 struct obd_device *obd =
96 ((struct seq_file *)file->private_data)->private;
97 struct kuc_hdr *lh;
98 struct hsm_action_list *hal;
99 struct hsm_action_item *hai;
100 int len;
101 int fd, rc;
102
103 rc = lprocfs_write_helper(buffer, count, &fd);
104 if (rc)
105 return rc;
106
107 if (fd < 0)
108 return -ERANGE;
109 CWARN("message to fd %d\n", fd);
110
111 len = sizeof(*lh) + sizeof(*hal) + MTI_NAME_MAXLEN +
112 /* for mockup below */ 2 * cfs_size_round(sizeof(*hai));
113
114 lh = kzalloc(len, GFP_NOFS);
115 if (!lh)
116 return -ENOMEM;
117
118 lh->kuc_magic = KUC_MAGIC;
119 lh->kuc_transport = KUC_TRANSPORT_HSM;
120 lh->kuc_msgtype = HMT_ACTION_LIST;
121 lh->kuc_msglen = len;
122
123 hal = (struct hsm_action_list *)(lh + 1);
124 hal->hal_version = HAL_VERSION;
125 hal->hal_archive_id = 1;
126 hal->hal_flags = 0;
127 obd_uuid2fsname(hal->hal_fsname, obd->obd_name, MTI_NAME_MAXLEN);
128
129 /* mock up an action list */
130 hal->hal_count = 2;
131 hai = hai_zero(hal);
132 hai->hai_action = HSMA_ARCHIVE;
133 hai->hai_fid.f_oid = 5;
134 hai->hai_len = sizeof(*hai);
135 hai = hai_next(hai);
136 hai->hai_action = HSMA_RESTORE;
137 hai->hai_fid.f_oid = 10;
138 hai->hai_len = sizeof(*hai);
139
140 /* This works for either broadcast or unicast to a single fd */
141 if (fd == 0) {
142 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
143 } else {
144 struct file *fp = fget(fd);
145
146 rc = libcfs_kkuc_msg_put(fp, lh);
147 fput(fp);
148 }
149 kfree(lh);
150 if (rc < 0)
151 return rc;
152 return count;
153 }
154
155 static struct file_operations mdc_kuc_fops = {
156 .open = mdc_kuc_open,
157 .write = mdc_kuc_write,
158 .release = single_release,
159 };
160
161 LPROC_SEQ_FOPS_WR_ONLY(mdc, ping);
162
163 LPROC_SEQ_FOPS_RO_TYPE(mdc, connect_flags);
164 LPROC_SEQ_FOPS_RO_TYPE(mdc, server_uuid);
165 LPROC_SEQ_FOPS_RO_TYPE(mdc, conn_uuid);
166 LPROC_SEQ_FOPS_RO_TYPE(mdc, timeouts);
167 LPROC_SEQ_FOPS_RO_TYPE(mdc, state);
168
169 /*
170 * Note: below sysfs entry is provided, but not currently in use, instead
171 * sbi->sb_md_brw_size is used, the per obd variable should be used
172 * when DNE is enabled, and dir pages are managed in MDC layer.
173 * Don't forget to enable sysfs store function then.
174 */
max_pages_per_rpc_show(struct kobject * kobj,struct attribute * attr,char * buf)175 static ssize_t max_pages_per_rpc_show(struct kobject *kobj,
176 struct attribute *attr,
177 char *buf)
178 {
179 struct obd_device *dev = container_of(kobj, struct obd_device,
180 obd_kobj);
181 struct client_obd *cli = &dev->u.cli;
182
183 return sprintf(buf, "%d\n", cli->cl_max_pages_per_rpc);
184 }
185 LUSTRE_RO_ATTR(max_pages_per_rpc);
186
187 LPROC_SEQ_FOPS_RW_TYPE(mdc, import);
188 LPROC_SEQ_FOPS_RW_TYPE(mdc, pinger_recov);
189
190 static struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
191 { "ping", &mdc_ping_fops, NULL, 0222 },
192 { "connect_flags", &mdc_connect_flags_fops, NULL, 0 },
193 /*{ "filegroups", lprocfs_rd_filegroups, NULL, 0 },*/
194 { "mds_server_uuid", &mdc_server_uuid_fops, NULL, 0 },
195 { "mds_conn_uuid", &mdc_conn_uuid_fops, NULL, 0 },
196 { "timeouts", &mdc_timeouts_fops, NULL, 0 },
197 { "import", &mdc_import_fops, NULL, 0 },
198 { "state", &mdc_state_fops, NULL, 0 },
199 { "hsm_nl", &mdc_kuc_fops, NULL, 0200 },
200 { "pinger_recov", &mdc_pinger_recov_fops, NULL, 0 },
201 { NULL }
202 };
203
204 static struct attribute *mdc_attrs[] = {
205 &lustre_attr_max_rpcs_in_flight.attr,
206 &lustre_attr_max_pages_per_rpc.attr,
207 NULL,
208 };
209
210 static struct attribute_group mdc_attr_group = {
211 .attrs = mdc_attrs,
212 };
213
lprocfs_mdc_init_vars(struct lprocfs_static_vars * lvars)214 void lprocfs_mdc_init_vars(struct lprocfs_static_vars *lvars)
215 {
216 lvars->sysfs_vars = &mdc_attr_group;
217 lvars->obd_vars = lprocfs_mdc_obd_vars;
218 }
219