geom_vinum_move.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  *  Copyright (c) 2005 Chris Jones
    3  *  All rights reserved.
    4  *
    5  * This software was developed for the FreeBSD Project by Chris Jones
    6  * thanks to the support of Google's Summer of Code program and
    7  * mentoring by Lukas Ertl.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   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 the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD: releng/8.3/sys/geom/vinum/geom_vinum_move.c 190507 2009-03-28 17:20:08Z lulf $");
   34 
   35 #include <sys/libkern.h>
   36 #include <sys/malloc.h>
   37 
   38 #include <geom/geom.h>
   39 #include <geom/vinum/geom_vinum_var.h>
   40 #include <geom/vinum/geom_vinum.h>
   41 
   42 void
   43 gv_move(struct g_geom *gp, struct gctl_req *req)
   44 {
   45         struct gv_softc *sc;
   46         struct gv_sd *s;
   47         struct gv_drive *d;
   48         char buf[20], *destination, *object;
   49         int *argc, *flags, i, type;
   50 
   51         sc = gp->softc;
   52 
   53         argc = gctl_get_paraml(req, "argc", sizeof(*argc));
   54         if (argc == NULL) {
   55                 gctl_error(req, "no arguments given");
   56                 return;
   57         }
   58         flags = gctl_get_paraml(req, "flags", sizeof(*flags));
   59         if (flags == NULL) {
   60                 gctl_error(req, "no flags given");
   61                 return;
   62         }
   63         destination = gctl_get_param(req, "destination", NULL);
   64         if (destination == NULL) {
   65                 gctl_error(req, "no destination given");
   66                 return;
   67         }
   68         if (gv_object_type(sc, destination) != GV_TYPE_DRIVE) {
   69                 gctl_error(req, "destination '%s' is not a drive", destination);
   70                 return;
   71         }
   72         d = gv_find_drive(sc, destination);
   73 
   74         /*
   75          * We start with 1 here, because argv[0] on the command line is the
   76          * destination drive.
   77          */
   78         for (i = 1; i < *argc; i++) {
   79                 snprintf(buf, sizeof(buf), "argv%d", i);
   80                 object = gctl_get_param(req, buf, NULL);
   81                 if (object == NULL)
   82                         continue;
   83 
   84                 type = gv_object_type(sc, object);
   85                 if (type != GV_TYPE_SD) {
   86                         gctl_error(req, "you can only move subdisks; "
   87                             "'%s' isn't one", object);
   88                         return;
   89                 }
   90 
   91                 s = gv_find_sd(sc, object);
   92                 if (s == NULL) {
   93                         gctl_error(req, "unknown subdisk '%s'", object);
   94                         return;
   95                 }
   96                 gv_post_event(sc, GV_EVENT_MOVE_SD, s, d, *flags, 0);
   97         }
   98 }
   99 
  100 /* Move a subdisk. */
  101 int
  102 gv_move_sd(struct gv_softc *sc, struct gv_sd *cursd, 
  103     struct gv_drive *destination, int flags)
  104 {
  105         struct gv_drive *d;
  106         struct gv_sd *newsd, *s, *s2;
  107         struct gv_plex *p;
  108         int err;
  109 
  110         g_topology_assert();
  111         KASSERT(cursd != NULL, ("gv_move_sd: NULL cursd"));
  112         KASSERT(destination != NULL, ("gv_move_sd: NULL destination"));
  113 
  114         d = cursd->drive_sc;
  115 
  116         if ((gv_consumer_is_open(d->consumer) ||
  117             gv_consumer_is_open(destination->consumer)) &&
  118             !(flags && GV_FLAG_F)) {
  119                 G_VINUM_DEBUG(0, "consumers on current and destination drive "
  120                     " still open");
  121                 return (GV_ERR_ISBUSY);
  122         }
  123 
  124         if (!(flags && GV_FLAG_F)) {
  125                 G_VINUM_DEBUG(1, "-f flag not passed; move would be "
  126                     "destructive");
  127                 return (GV_ERR_INVFLAG);
  128         }
  129 
  130         if (destination == cursd->drive_sc) {
  131                 G_VINUM_DEBUG(1, "subdisk '%s' already on drive '%s'",
  132                     cursd->name, destination->name);
  133                 return (GV_ERR_ISATTACHED);
  134         }
  135 
  136         /* XXX: Does it have to be part of a plex? */
  137         p = gv_find_plex(sc, cursd->plex);
  138         if (p == NULL) {
  139                 G_VINUM_DEBUG(0, "subdisk '%s' is not part of a plex",
  140                     cursd->name);
  141                 return (GV_ERR_NOTFOUND);
  142         }
  143 
  144         /* Stale the old subdisk. */
  145         err = gv_set_sd_state(cursd, GV_SD_STALE,
  146             GV_SETSTATE_FORCE | GV_SETSTATE_CONFIG);
  147         if (err) {
  148                 G_VINUM_DEBUG(0, "could not set the subdisk '%s' to state "
  149                     "'stale'", cursd->name);
  150                 return (err);
  151         }
  152 
  153         /*
  154          * Create new subdisk. Ideally, we'd use gv_new_sd, but that requires
  155          * us to create a string for it to parse, which is silly.
  156          * TODO: maybe refactor gv_new_sd such that this is no longer the case.
  157          */
  158         newsd = g_malloc(sizeof(struct gv_sd), M_WAITOK | M_ZERO);
  159         newsd->plex_offset = cursd->plex_offset;
  160         newsd->size = cursd->size;
  161         newsd->drive_offset = -1;
  162         strlcpy(newsd->name, cursd->name, sizeof(newsd->name));
  163         strlcpy(newsd->drive, destination->name, sizeof(newsd->drive));
  164         strlcpy(newsd->plex, cursd->plex, sizeof(newsd->plex));
  165         newsd->state = GV_SD_STALE;
  166         newsd->vinumconf = cursd->vinumconf;
  167 
  168         err = gv_sd_to_drive(newsd, destination);
  169         if (err) {
  170                 /* XXX not enough free space? */
  171                 g_free(newsd);
  172                 return (err);
  173         }
  174 
  175         /* Replace the old sd by the new one. */
  176         LIST_FOREACH_SAFE(s, &p->subdisks, in_plex, s2) {
  177                 if (s == cursd) {
  178                         gv_rm_sd(sc, s);
  179                 }
  180         }
  181         gv_sd_to_plex(newsd, p);
  182         LIST_INSERT_HEAD(&sc->subdisks, newsd, sd);
  183         /* Update volume size of plex. */
  184         if (p->vol_sc != NULL)
  185                 gv_update_vol_size(p->vol_sc, gv_vol_size(p->vol_sc));
  186         gv_save_config(p->vinumconf);
  187         return (0);
  188 }

Cache object: d8a6167cf1307a4a4ec083b62d49e8d0

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/geom/vinum/geom_vinum_move.c

FreeBSD/Linux Kernel Cross Reference
sys/geom/vinum/geom_vinum_move.c