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(int ac, const char **av)
  40 {
  41         hammer2_ioc_pfs_t pfs;
  42         int ecode = 0;
  43         int count = 0;
  44         int fd;
  45         int i;
  46         uint32_t status;
  47         char *pfs_id_str = NULL;
  48
  49         for (i = 0; i < ac; ++i) {
  50                 if ((fd = hammer2_ioctl_handle(av[i])) < 0)
  51                         return(1);
  52                 bzero(&pfs, sizeof(pfs));
  53
  54                 while ((pfs.name_key = pfs.name_next) != (hammer2_key_t)-1) {
  55                         if (ioctl(fd, HAMMER2IOC_PFS_GET, &pfs) < 0) {
  56                                 perror("ioctl");
  57                                 ecode = 1;
  58                                 break;
  59                         }
  60                         if (count == 0) {
  61                                 printf("Type        "
  62                                        "ClusterId (pfs_clid)                 "
  63                                        "Label\n");
  64                         }
  65                         switch(pfs.pfs_type) {
  66                         case HAMMER2_PFSTYPE_NONE:
  67                                 printf("NONE        ");
  68                                 break;
  69                         case HAMMER2_PFSTYPE_CACHE:
  70                                 printf("CACHE       ");
  71                                 break;
  72                         case HAMMER2_PFSTYPE_SLAVE:
  73                                 printf("SLAVE       ");
  74                                 break;
  75                         case HAMMER2_PFSTYPE_SOFT_SLAVE:
  76                                 printf("SOFT_SLAVE  ");
  77                                 break;
  78                         case HAMMER2_PFSTYPE_SOFT_MASTER:
  79                                 printf("SOFT_MASTER ");
  80                                 break;
  81                         case HAMMER2_PFSTYPE_MASTER:
  82                                 switch (pfs.pfs_subtype) {
  83                                 case HAMMER2_PFSSUBTYPE_NONE:
  84                                         printf("MASTER      ");
  85                                         break;
  86                                 case HAMMER2_PFSSUBTYPE_SNAPSHOT:
  87                                         printf("SNAPSHOT    ");
  88                                         break;
  89                                 case HAMMER2_PFSSUBTYPE_AUTOSNAP:
  90                                         printf("AUTOSNAP    ");
  91                                         break;
  92                                 default:
  93                                         printf("MASTER(sub?)");
  94                                         break;
  95                                 }
  96                                 break;
  97                         default:
  98                                 printf("%02x          ", pfs.pfs_type);
  99                                 break;
 100                         }
 101                         uuid_to_string(&pfs.pfs_clid, &pfs_id_str, &status);
 102                         printf("%s ", pfs_id_str);
 103                         free(pfs_id_str);
 104                         pfs_id_str = NULL;
 105                         printf("%s\n", pfs.name);
 106                         ++count;
 107                 }
 108                 close(fd);
 109         }
 110
 111         return (ecode);
 112 }
 113
 114 int
 115 cmd_pfs_getid(const char *sel_path, const char *name, int privateid)
 116 {
 117         hammer2_ioc_pfs_t pfs;
 118         int ecode = 0;
 119         int fd;
 120         uint32_t status;
 121         char *pfs_id_str = NULL;
 122
 123         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
 124                 return(1);
 125         bzero(&pfs, sizeof(pfs));
 126
 127         snprintf(pfs.name, sizeof(pfs.name), "%s", name);
 128         if (ioctl(fd, HAMMER2IOC_PFS_LOOKUP, &pfs) < 0) {
 129                 perror("ioctl");
 130                 ecode = 1;
 131         } else {
 132                 if (privateid)
 133                         uuid_to_string(&pfs.pfs_fsid, &pfs_id_str, &status);
 134                 else
 135                         uuid_to_string(&pfs.pfs_clid, &pfs_id_str, &status);
 136                 printf("%s\n", pfs_id_str);
 137                 free(pfs_id_str);
 138                 pfs_id_str = NULL;
 139         }
 140         close(fd);
 141         return (ecode);
 142 }
 143
 144
 145 int
 146 cmd_pfs_create(const char *sel_path, const char *name,
 147                uint8_t pfs_type, const char *uuid_str)
 148 {
 149         hammer2_ioc_pfs_t pfs;
 150         int ecode = 0;
 151         int fd;
 152         uint32_t status;
 153
 154         /*
 155          * Default to MASTER if no uuid was specified.
 156          * Default to SLAVE if a uuid was specified.
 157          *
 158          * When adding masters to a cluster, the new PFS must be added as
 159          * a slave and then upgraded to ensure proper synchronization.
 160          */
 161         if (pfs_type == HAMMER2_PFSTYPE_NONE) {
 162                 if (uuid_str)
 163                         pfs_type = HAMMER2_PFSTYPE_SLAVE;
 164                 else
 165                         pfs_type = HAMMER2_PFSTYPE_MASTER;
 166         }
 167
 168         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
 169                 return(1);
 170         bzero(&pfs, sizeof(pfs));
 171         snprintf(pfs.name, sizeof(pfs.name), "%s", name);
 172         pfs.pfs_type = pfs_type;
 173         if (uuid_str) {
 174                 uuid_from_string(uuid_str, &pfs.pfs_clid, &status);
 175         } else {
 176                 uuid_create(&pfs.pfs_clid, &status);
 177         }
 178         if (status == uuid_s_ok)
 179                 uuid_create(&pfs.pfs_fsid, &status);
 180         if (status == uuid_s_ok) {
 181                 if (ioctl(fd, HAMMER2IOC_PFS_CREATE, &pfs) < 0) {
 182                         if (errno == EEXIST) {
 183                                 fprintf(stderr,
 184                                         "NOTE: Typically the same name is "
 185                                         "used for cluster elements on "
 186                                         "different mounts,\n"
 187                                         "      but cluster elements on the "
 188                                         "same mount require unique names.\n"
 189                                         "pfs-create %s: already present\n",
 190                                         name);
 191                         } else {
 192                                 perror("ioctl");
 193                         }
 194                         ecode = 1;
 195                 }
 196         } else {
 197                 fprintf(stderr, "hammer2: pfs_create: badly formed uuid\n");
 198                 ecode = 1;
 199         }
 200         close(fd);
 201         return (ecode);
 202 }
 203
 204 int
 205 cmd_pfs_delete(const char *sel_path, const char *name)
 206 {
 207         hammer2_ioc_pfs_t pfs;
 208         int ecode = 0;
 209         int fd;
 210
 211         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
 212                 return(1);
 213         bzero(&pfs, sizeof(pfs));
 214         snprintf(pfs.name, sizeof(pfs.name), "%s", name);
 215
 216         if (ioctl(fd, HAMMER2IOC_PFS_DELETE, &pfs) < 0) {
 217                 fprintf(stderr, "hammer2: pfs_delete(%s): %s\n",
 218                         name, strerror(errno));
 219                 ecode = 1;
 220         }
 221         close(fd);
 222
 223         return (ecode);
 224 }