sbin/hammer2/cmd_pfs.c

   1 /*
   2  * Copyright (c) 2011-2012 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@dragonflybsd.org>
   6  * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in
  16  *    the documentation and/or other materials provided with the
  17  *    distribution.
  18  * 3. Neither the name of The DragonFly Project nor the names of its
  19  *    contributors may be used to endorse or promote products derived
  20  *    from this software without specific, prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  25  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  26  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  28  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  29  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  30  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  31  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  32  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "hammer2.h"
  37
  38 int
  39 cmd_pfs_list(const char *sel_path)
  40 {
  41         hammer2_ioc_pfs_t pfs;
  42         int ecode = 0;
  43         int count = 0;
  44         int fd;
  45         uint32_t status;
  46         char *pfs_id_str = NULL;
  47
  48         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
  49                 return(1);
  50         bzero(&pfs, sizeof(pfs));
  51
  52         while ((pfs.name_key = pfs.name_next) != (hammer2_key_t)-1) {
  53                 if (ioctl(fd, HAMMER2IOC_PFS_GET, &pfs) < 0) {
  54                         perror("ioctl");
  55                         ecode = 1;
  56                         break;
  57                 }
  58                 if (count == 0) {
  59                         printf("Type        "
  60                                "ClusterId (pfs_clid)                 "
  61                                "Label\n");
  62                 }
  63                 switch(pfs.pfs_type) {
  64                 case HAMMER2_PFSTYPE_NONE:
  65                         printf("NONE        ");
  66                         break;
  67                 case HAMMER2_PFSTYPE_CACHE:
  68                         printf("CACHE       ");
  69                         break;
  70                 case HAMMER2_PFSTYPE_COPY:
  71                         printf("COPY        ");
  72                         break;
  73                 case HAMMER2_PFSTYPE_SLAVE:
  74                         printf("SLAVE       ");
  75                         break;
  76                 case HAMMER2_PFSTYPE_SOFT_SLAVE:
  77                         printf("SOFT_SLAVE  ");
  78                         break;
  79                 case HAMMER2_PFSTYPE_SOFT_MASTER:
  80                         printf("SOFT_MASTER ");
  81                         break;
  82                 case HAMMER2_PFSTYPE_MASTER:
  83                         printf("MASTER      ");
  84                         break;
  85                 case HAMMER2_PFSTYPE_SNAPSHOT:
  86                         printf("SNAPSHOT    ");
  87                         break;
  88                 default:
  89                         printf("%02x          ", pfs.pfs_type);
  90                         break;
  91                 }
  92                 uuid_to_string(&pfs.pfs_clid, &pfs_id_str, &status);
  93                 printf("%s ", pfs_id_str);
  94                 free(pfs_id_str);
  95                 pfs_id_str = NULL;
  96                 printf("%s\n", pfs.name);
  97                 ++count;
  98         }
  99         close(fd);
 100
 101         return (ecode);
 102 }
 103
 104 int
 105 cmd_pfs_getid(const char *sel_path, const char *name, int privateid)
 106 {
 107         hammer2_ioc_pfs_t pfs;
 108         int ecode = 0;
 109         int fd;
 110         uint32_t status;
 111         char *pfs_id_str = NULL;
 112
 113         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
 114                 return(1);
 115         bzero(&pfs, sizeof(pfs));
 116
 117         snprintf(pfs.name, sizeof(pfs.name), "%s", name);
 118         if (ioctl(fd, HAMMER2IOC_PFS_LOOKUP, &pfs) < 0) {
 119                 perror("ioctl");
 120                 ecode = 1;
 121         } else {
 122                 if (privateid)
 123                         uuid_to_string(&pfs.pfs_fsid, &pfs_id_str, &status);
 124                 else
 125                         uuid_to_string(&pfs.pfs_clid, &pfs_id_str, &status);
 126                 printf("%s\n", pfs_id_str);
 127                 free(pfs_id_str);
 128                 pfs_id_str = NULL;
 129         }
 130         close(fd);
 131         return (ecode);
 132 }
 133
 134
 135 int
 136 cmd_pfs_create(const char *sel_path, const char *name,
 137                uint8_t pfs_type, const char *uuid_str)
 138 {
 139         hammer2_ioc_pfs_t pfs;
 140         int ecode = 0;
 141         int fd;
 142         uint32_t status;
 143
 144         /*
 145          * Default to MASTER if no uuid was specified.
 146          * Default to SLAVE if a uuid was specified.
 147          *
 148          * When adding masters to a cluster, the new PFS must be added as
 149          * a slave and then upgraded to ensure proper synchronization.
 150          */
 151         if (pfs_type == HAMMER2_PFSTYPE_NONE) {
 152                 if (uuid_str)
 153                         pfs_type = HAMMER2_PFSTYPE_SLAVE;
 154                 else
 155                         pfs_type = HAMMER2_PFSTYPE_MASTER;
 156         }
 157
 158         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
 159                 return(1);
 160         bzero(&pfs, sizeof(pfs));
 161         snprintf(pfs.name, sizeof(pfs.name), "%s", name);
 162         pfs.pfs_type = pfs_type;
 163         if (uuid_str) {
 164                 uuid_from_string(uuid_str, &pfs.pfs_clid, &status);
 165         } else {
 166                 uuid_create(&pfs.pfs_clid, &status);
 167         }
 168         if (status == uuid_s_ok)
 169                 uuid_create(&pfs.pfs_fsid, &status);
 170         if (status == uuid_s_ok) {
 171                 if (ioctl(fd, HAMMER2IOC_PFS_CREATE, &pfs) < 0) {
 172                         if (errno == EEXIST) {
 173                                 fprintf(stderr,
 174                                         "NOTE: Typically the same name is "
 175                                         "used for cluster elements on "
 176                                         "different mounts,\n"
 177                                         "      but cluster elements on the "
 178                                         "same mount require unique names.\n"
 179                                         "pfs-create %s: already present\n",
 180                                         name);
 181                         } else {
 182                                 perror("ioctl");
 183                         }
 184                         ecode = 1;
 185                 }
 186         } else {
 187                 fprintf(stderr, "hammer2: pfs_create: badly formed uuid\n");
 188                 ecode = 1;
 189         }
 190         close(fd);
 191         return (ecode);
 192 }
 193
 194 int
 195 cmd_pfs_delete(const char *sel_path, const char *name)
 196 {
 197         hammer2_ioc_pfs_t pfs;
 198         int ecode = 0;
 199         int fd;
 200
 201         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
 202                 return(1);
 203         bzero(&pfs, sizeof(pfs));
 204         snprintf(pfs.name, sizeof(pfs.name), "%s", name);
 205
 206         if (ioctl(fd, HAMMER2IOC_PFS_DELETE, &pfs) < 0) {
 207                 fprintf(stderr, "hammer2: pfs_delete(%s): %s\n",
 208                         name, strerror(errno));
 209                 ecode = 1;
 210         }
 211         close(fd);
 212
 213         return (ecode);
 214 }