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_SLAVE:
  71                         printf("SLAVE       ");
  72                         break;
  73                 case HAMMER2_PFSTYPE_SOFT_SLAVE:
  74                         printf("SOFT_SLAVE  ");
  75                         break;
  76                 case HAMMER2_PFSTYPE_SOFT_MASTER:
  77                         printf("SOFT_MASTER ");
  78                         break;
  79                 case HAMMER2_PFSTYPE_MASTER:
  80                         switch (pfs.pfs_subtype) {
  81                         case HAMMER2_PFSSUBTYPE_NONE:
  82                                 printf("MASTER      ");
  83                                 break;
  84                         case HAMMER2_PFSSUBTYPE_SNAPSHOT:
  85                                 printf("SNAPSHOT    ");
  86                                 break;
  87                         case HAMMER2_PFSSUBTYPE_AUTOSNAP:
  88                                 printf("AUTOSNAP    ");
  89                                 break;
  90                         default:
  91                                 printf("MASTER(sub?)");
  92                                 break;
  93                         }
  94                         break;
  95                 default:
  96                         printf("%02x          ", pfs.pfs_type);
  97                         break;
  98                 }
  99                 uuid_to_string(&pfs.pfs_clid, &pfs_id_str, &status);
 100                 printf("%s ", pfs_id_str);
 101                 free(pfs_id_str);
 102                 pfs_id_str = NULL;
 103                 printf("%s\n", pfs.name);
 104                 ++count;
 105         }
 106         close(fd);
 107
 108         return (ecode);
 109 }
 110
 111 int
 112 cmd_pfs_getid(const char *sel_path, const char *name, int privateid)
 113 {
 114         hammer2_ioc_pfs_t pfs;
 115         int ecode = 0;
 116         int fd;
 117         uint32_t status;
 118         char *pfs_id_str = NULL;
 119
 120         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
 121                 return(1);
 122         bzero(&pfs, sizeof(pfs));
 123
 124         snprintf(pfs.name, sizeof(pfs.name), "%s", name);
 125         if (ioctl(fd, HAMMER2IOC_PFS_LOOKUP, &pfs) < 0) {
 126                 perror("ioctl");
 127                 ecode = 1;
 128         } else {
 129                 if (privateid)
 130                         uuid_to_string(&pfs.pfs_fsid, &pfs_id_str, &status);
 131                 else
 132                         uuid_to_string(&pfs.pfs_clid, &pfs_id_str, &status);
 133                 printf("%s\n", pfs_id_str);
 134                 free(pfs_id_str);
 135                 pfs_id_str = NULL;
 136         }
 137         close(fd);
 138         return (ecode);
 139 }
 140
 141
 142 int
 143 cmd_pfs_create(const char *sel_path, const char *name,
 144                uint8_t pfs_type, const char *uuid_str)
 145 {
 146         hammer2_ioc_pfs_t pfs;
 147         int ecode = 0;
 148         int fd;
 149         uint32_t status;
 150
 151         /*
 152          * Default to MASTER if no uuid was specified.
 153          * Default to SLAVE if a uuid was specified.
 154          *
 155          * When adding masters to a cluster, the new PFS must be added as
 156          * a slave and then upgraded to ensure proper synchronization.
 157          */
 158         if (pfs_type == HAMMER2_PFSTYPE_NONE) {
 159                 if (uuid_str)
 160                         pfs_type = HAMMER2_PFSTYPE_SLAVE;
 161                 else
 162                         pfs_type = HAMMER2_PFSTYPE_MASTER;
 163         }
 164
 165         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
 166                 return(1);
 167         bzero(&pfs, sizeof(pfs));
 168         snprintf(pfs.name, sizeof(pfs.name), "%s", name);
 169         pfs.pfs_type = pfs_type;
 170         if (uuid_str) {
 171                 uuid_from_string(uuid_str, &pfs.pfs_clid, &status);
 172         } else {
 173                 uuid_create(&pfs.pfs_clid, &status);
 174         }
 175         if (status == uuid_s_ok)
 176                 uuid_create(&pfs.pfs_fsid, &status);
 177         if (status == uuid_s_ok) {
 178                 if (ioctl(fd, HAMMER2IOC_PFS_CREATE, &pfs) < 0) {
 179                         if (errno == EEXIST) {
 180                                 fprintf(stderr,
 181                                         "NOTE: Typically the same name is "
 182                                         "used for cluster elements on "
 183                                         "different mounts,\n"
 184                                         "      but cluster elements on the "
 185                                         "same mount require unique names.\n"
 186                                         "pfs-create %s: already present\n",
 187                                         name);
 188                         } else {
 189                                 perror("ioctl");
 190                         }
 191                         ecode = 1;
 192                 }
 193         } else {
 194                 fprintf(stderr, "hammer2: pfs_create: badly formed uuid\n");
 195                 ecode = 1;
 196         }
 197         close(fd);
 198         return (ecode);
 199 }
 200
 201 int
 202 cmd_pfs_delete(const char *sel_path, const char *name)
 203 {
 204         hammer2_ioc_pfs_t pfs;
 205         int ecode = 0;
 206         int fd;
 207
 208         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
 209                 return(1);
 210         bzero(&pfs, sizeof(pfs));
 211         snprintf(pfs.name, sizeof(pfs.name), "%s", name);
 212
 213         if (ioctl(fd, HAMMER2IOC_PFS_DELETE, &pfs) < 0) {
 214                 fprintf(stderr, "hammer2: pfs_delete(%s): %s\n",
 215                         name, strerror(errno));
 216                 ecode = 1;
 217         }
 218         close(fd);
 219
 220         return (ecode);
 221 }