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freebsd/sys/geom/vinum/geom_vinum_list.c
Ulf Lilleengen c0b9797aa8 Import the gvinum work that have been done during and after Summer of Code 2007. 
The work have been under testing and fixing since then, and it is mature enough
to be put into HEAD for further testing.

A lot have changed in this time, and here are the most important:
- Gvinum now uses one single workerthread instead of one thread for each
  volume and each plex. The reason for this is that the previous scheme was
  very complex, and was the cause of many of the bugs discovered in gvinum.
  Instead, gvinum now uses one worker thread with an event queue, quite
  similar to what used in gmirror.
- The rebuild/grow/initialize/parity check routines no longer runs in
  separate threads, but are run as regular I/O requests with special flags.
  This made it easier to support mounted growing and parity rebuild.
- Support for growing striped and raid5-plexes, meaning that one can extend the
  volumes for these plex types in addition to the concat type. Also works while
  the volume is mounted.
- Implementation of many of the missing commands from the old vinum:
  attach/detach, start (was partially implemented), stop (was partially
  implemented), concat, mirror, stripe, raid5 (shortcuts for creating volumes
  with one plex of these organizations).
- The parity check and rebuild no longer goes between userland/kernel, meaning
  that the gvinum command will not stay and wait forever for the rebuild to
  finish. You can instead watch the status with the list command.
- Many problems with gvinum have been reported since 5.x, and some has been hard
  to fix due to the complicated architecture. Hopefully, it should be more
  stable and better handle edge cases that previously made gvinum crash.
- Failed drives no longer disappears entirely, but now leave behind a dummy
  drive that makes sure the original state is not forgotten in case the system
  is rebooted between drive failures/swaps.
- Update manpage to reflect new commands and extend it with some examples.

Sponsored by:   Google Summer of Code 2007
Mentored by:    le
Tested by:      Rick C. Petty <rick-freebsd2008 -at- kiwi-computer.com>
2009-03-28 17:20:08 +00:00

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/*-
* Copyright (c) 2004, 2007 Lukas Ertl
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/libkern.h>
#include <sys/malloc.h>
#include <geom/geom.h>
#include <geom/vinum/geom_vinum_var.h>
#include <geom/vinum/geom_vinum.h>
#include <geom/vinum/geom_vinum_share.h>
void gv_lvi(struct gv_volume *, struct sbuf *, int);
void gv_lpi(struct gv_plex *, struct sbuf *, int);
void gv_lsi(struct gv_sd *, struct sbuf *, int);
void gv_ldi(struct gv_drive *, struct sbuf *, int);
void
gv_list(struct g_geom *gp, struct gctl_req *req)
{
struct gv_softc *sc;
struct gv_drive *d;
struct gv_plex *p;
struct gv_sd *s;
struct gv_volume *v;
struct sbuf *sb;
int *argc, i, *flags, type;
char *arg, buf[20], *cmd;
argc = gctl_get_paraml(req, "argc", sizeof(*argc));
if (argc == NULL) {
gctl_error(req, "no arguments given");
return;
}
flags = gctl_get_paraml(req, "flags", sizeof(*flags));
if (flags == NULL) {
gctl_error(req, "no flags given");
return;
}
sc = gp->softc;
sb = sbuf_new(NULL, NULL, GV_CFG_LEN, SBUF_FIXEDLEN);
/* Figure out which command was given. */
cmd = gctl_get_param(req, "cmd", NULL);
if (cmd == NULL) {
gctl_error(req, "no command given");
return;
}
/* List specific objects or everything. */
if (!strcmp(cmd, "list") || !strcmp(cmd, "l")) {
if (*argc) {
for (i = 0; i < *argc; i++) {
snprintf(buf, sizeof(buf), "argv%d", i);
arg = gctl_get_param(req, buf, NULL);
if (arg == NULL)
continue;
type = gv_object_type(sc, arg);
switch (type) {
case GV_TYPE_VOL:
v = gv_find_vol(sc, arg);
gv_lvi(v, sb, *flags);
break;
case GV_TYPE_PLEX:
p = gv_find_plex(sc, arg);
gv_lpi(p, sb, *flags);
break;
case GV_TYPE_SD:
s = gv_find_sd(sc, arg);
gv_lsi(s, sb, *flags);
break;
case GV_TYPE_DRIVE:
d = gv_find_drive(sc, arg);
gv_ldi(d, sb, *flags);
break;
default:
gctl_error(req, "unknown object '%s'",
arg);
break;
}
}
} else {
gv_ld(gp, req, sb);
sbuf_printf(sb, "\n");
gv_lv(gp, req, sb);
sbuf_printf(sb, "\n");
gv_lp(gp, req, sb);
sbuf_printf(sb, "\n");
gv_ls(gp, req, sb);
}
/* List drives. */
} else if (!strcmp(cmd, "ld")) {
if (*argc) {
for (i = 0; i < *argc; i++) {
snprintf(buf, sizeof(buf), "argv%d", i);
arg = gctl_get_param(req, buf, NULL);
if (arg == NULL)
continue;
type = gv_object_type(sc, arg);
if (type != GV_TYPE_DRIVE) {
gctl_error(req, "'%s' is not a drive",
arg);
continue;
} else {
d = gv_find_drive(sc, arg);
gv_ldi(d, sb, *flags);
}
}
} else
gv_ld(gp, req, sb);
/* List volumes. */
} else if (!strcmp(cmd, "lv")) {
if (*argc) {
for (i = 0; i < *argc; i++) {
snprintf(buf, sizeof(buf), "argv%d", i);
arg = gctl_get_param(req, buf, NULL);
if (arg == NULL)
continue;
type = gv_object_type(sc, arg);
if (type != GV_TYPE_VOL) {
gctl_error(req, "'%s' is not a volume",
arg);
continue;
} else {
v = gv_find_vol(sc, arg);
gv_lvi(v, sb, *flags);
}
}
} else
gv_lv(gp, req, sb);
/* List plexes. */
} else if (!strcmp(cmd, "lp")) {
if (*argc) {
for (i = 0; i < *argc; i++) {
snprintf(buf, sizeof(buf), "argv%d", i);
arg = gctl_get_param(req, buf, NULL);
if (arg == NULL)
continue;
type = gv_object_type(sc, arg);
if (type != GV_TYPE_PLEX) {
gctl_error(req, "'%s' is not a plex",
arg);
continue;
} else {
p = gv_find_plex(sc, arg);
gv_lpi(p, sb, *flags);
}
}
} else
gv_lp(gp, req, sb);
/* List subdisks. */
} else if (!strcmp(cmd, "ls")) {
if (*argc) {
for (i = 0; i < *argc; i++) {
snprintf(buf, sizeof(buf), "argv%d", i);
arg = gctl_get_param(req, buf, NULL);
if (arg == NULL)
continue;
type = gv_object_type(sc, arg);
if (type != GV_TYPE_SD) {
gctl_error(req, "'%s' is not a subdisk",
arg);
continue;
} else {
s = gv_find_sd(sc, arg);
gv_lsi(s, sb, *flags);
}
}
} else
gv_ls(gp, req, sb);
} else
gctl_error(req, "unknown command '%s'", cmd);
sbuf_finish(sb);
gctl_set_param(req, "config", sbuf_data(sb), sbuf_len(sb) + 1);
sbuf_delete(sb);
}
/* List one or more volumes. */
void
gv_lv(struct g_geom *gp, struct gctl_req *req, struct sbuf *sb)
{
struct gv_softc *sc;
struct gv_volume *v;
int i, *flags;
sc = gp->softc;
i = 0;
LIST_FOREACH(v, &sc->volumes, volume)
i++;
sbuf_printf(sb, "%d volume%s:\n", i, i == 1 ? "" : "s");
if (i) {
flags = gctl_get_paraml(req, "flags", sizeof(*flags));
LIST_FOREACH(v, &sc->volumes, volume)
gv_lvi(v, sb, *flags);
}
}
/* List a single volume. */
void
gv_lvi(struct gv_volume *v, struct sbuf *sb, int flags)
{
struct gv_plex *p;
int i;
if (flags & GV_FLAG_V) {
sbuf_printf(sb, "Volume %s:\tSize: %jd bytes (%jd MB)\n",
v->name, (intmax_t)v->size, (intmax_t)v->size / MEGABYTE);
sbuf_printf(sb, "\t\tState: %s\n", gv_volstate(v->state));
} else {
sbuf_printf(sb, "V %-21s State: %s\tPlexes: %7d\tSize: %s\n",
v->name, gv_volstate(v->state), v->plexcount,
gv_roughlength(v->size, 0));
}
if (flags & GV_FLAG_VV) {
i = 0;
LIST_FOREACH(p, &v->plexes, in_volume) {
sbuf_printf(sb, "\t\tPlex %2d:\t%s\t(%s), %s\n", i,
p->name, gv_plexstate(p->state),
gv_roughlength(p->size, 0));
i++;
}
}
if (flags & GV_FLAG_R) {
LIST_FOREACH(p, &v->plexes, in_volume)
gv_lpi(p, sb, flags);
}
}
/* List one or more plexes. */
void
gv_lp(struct g_geom *gp, struct gctl_req *req, struct sbuf *sb)
{
struct gv_softc *sc;
struct gv_plex *p;
int i, *flags;
sc = gp->softc;
i = 0;
LIST_FOREACH(p, &sc->plexes, plex)
i++;
sbuf_printf(sb, "%d plex%s:\n", i, i == 1 ? "" : "es");
if (i) {
flags = gctl_get_paraml(req, "flags", sizeof(*flags));
LIST_FOREACH(p, &sc->plexes, plex)
gv_lpi(p, sb, *flags);
}
}
/* List a single plex. */
void
gv_lpi(struct gv_plex *p, struct sbuf *sb, int flags)
{
struct gv_sd *s;
int i;
if (flags & GV_FLAG_V) {
sbuf_printf(sb, "Plex %s:\tSize:\t%9jd bytes (%jd MB)\n",
p->name, (intmax_t)p->size, (intmax_t)p->size / MEGABYTE);
sbuf_printf(sb, "\t\tSubdisks: %8d\n", p->sdcount);
sbuf_printf(sb, "\t\tState: %s\n", gv_plexstate(p->state));
if ((p->flags & GV_PLEX_SYNCING) ||
(p->flags & GV_PLEX_GROWING) ||
(p->flags & GV_PLEX_REBUILDING)) {
sbuf_printf(sb, "\t\tSynced: ");
sbuf_printf(sb, "%16jd bytes (%d%%)\n",
(intmax_t)p->synced,
(p->size > 0) ? (int)((p->synced * 100) / p->size) :
0);
}
sbuf_printf(sb, "\t\tOrganization: %s", gv_plexorg(p->org));
if (gv_is_striped(p)) {
sbuf_printf(sb, "\tStripe size: %s\n",
gv_roughlength(p->stripesize, 1));
}
sbuf_printf(sb, "\t\tFlags: %d\n", p->flags);
if (p->vol_sc != NULL) {
sbuf_printf(sb, "\t\tPart of volume %s\n", p->volume);
}
} else {
sbuf_printf(sb, "P %-18s %2s State: ", p->name,
gv_plexorg_short(p->org));
if ((p->flags & GV_PLEX_SYNCING) ||
(p->flags & GV_PLEX_GROWING) ||
(p->flags & GV_PLEX_REBUILDING)) {
sbuf_printf(sb, "S %d%%\t", (int)((p->synced * 100) /
p->size));
} else {
sbuf_printf(sb, "%s\t", gv_plexstate(p->state));
}
sbuf_printf(sb, "Subdisks: %5d\tSize: %s\n", p->sdcount,
gv_roughlength(p->size, 0));
}
if (flags & GV_FLAG_VV) {
i = 0;
LIST_FOREACH(s, &p->subdisks, in_plex) {
sbuf_printf(sb, "\t\tSubdisk %d:\t%s\n", i, s->name);
sbuf_printf(sb, "\t\t state: %s\tsize %11jd "
"(%jd MB)\n", gv_sdstate(s->state),
(intmax_t)s->size, (intmax_t)s->size / MEGABYTE);
if (p->org == GV_PLEX_CONCAT) {
sbuf_printf(sb, "\t\t\toffset %9jd (0x%jx)\n",
(intmax_t)s->plex_offset,
(intmax_t)s->plex_offset);
}
i++;
}
}
if (flags & GV_FLAG_R) {
LIST_FOREACH(s, &p->subdisks, in_plex)
gv_lsi(s, sb, flags);
}
}
/* List one or more subdisks. */
void
gv_ls(struct g_geom *gp, struct gctl_req *req, struct sbuf *sb)
{
struct gv_softc *sc;
struct gv_sd *s;
int i, *flags;
sc = gp->softc;
i = 0;
LIST_FOREACH(s, &sc->subdisks, sd)
i++;
sbuf_printf(sb, "%d subdisk%s:\n", i, i == 1 ? "" : "s");
if (i) {
flags = gctl_get_paraml(req, "flags", sizeof(*flags));
LIST_FOREACH(s, &sc->subdisks, sd)
gv_lsi(s, sb, *flags);
}
}
/* List a single subdisk. */
void
gv_lsi(struct gv_sd *s, struct sbuf *sb, int flags)
{
if (flags & GV_FLAG_V) {
sbuf_printf(sb, "Subdisk %s:\n", s->name);
sbuf_printf(sb, "\t\tSize: %16jd bytes (%jd MB)\n",
(intmax_t)s->size, (intmax_t)s->size / MEGABYTE);
sbuf_printf(sb, "\t\tState: %s\n", gv_sdstate(s->state));
if (s->state == GV_SD_INITIALIZING ||
s->state == GV_SD_REVIVING) {
if (s->state == GV_SD_INITIALIZING)
sbuf_printf(sb, "\t\tInitialized: ");
else
sbuf_printf(sb, "\t\tRevived: ");
sbuf_printf(sb, "%16jd bytes (%d%%)\n",
(intmax_t)s->initialized,
(int)((s->initialized * 100) / s->size));
}
if (s->plex_sc != NULL) {
sbuf_printf(sb, "\t\tPlex %s at offset %jd (%s)\n",
s->plex, (intmax_t)s->plex_offset,
gv_roughlength(s->plex_offset, 1));
}
sbuf_printf(sb, "\t\tDrive %s (%s) at offset %jd (%s)\n",
s->drive,
s->drive_sc == NULL ? "*missing*" : s->drive_sc->name,
(intmax_t)s->drive_offset,
gv_roughlength(s->drive_offset, 1));
sbuf_printf(sb, "\t\tFlags: %d\n", s->flags);
} else {
sbuf_printf(sb, "S %-21s State: ", s->name);
if (s->state == GV_SD_INITIALIZING ||
s->state == GV_SD_REVIVING) {
if (s->state == GV_SD_INITIALIZING)
sbuf_printf(sb, "I ");
else
sbuf_printf(sb, "R ");
sbuf_printf(sb, "%d%%\t",
(int)((s->initialized * 100) / s->size));
} else {
sbuf_printf(sb, "%s\t", gv_sdstate(s->state));
}
sbuf_printf(sb, "D: %-12s Size: %s\n", s->drive,
gv_roughlength(s->size, 0));
}
}
/* List one or more drives. */
void
gv_ld(struct g_geom *gp, struct gctl_req *req, struct sbuf *sb)
{
struct gv_softc *sc;
struct gv_drive *d;
int i, *flags;
sc = gp->softc;
i = 0;
LIST_FOREACH(d, &sc->drives, drive)
i++;
sbuf_printf(sb, "%d drive%s:\n", i, i == 1 ? "" : "s");
if (i) {
flags = gctl_get_paraml(req, "flags", sizeof(*flags));
LIST_FOREACH(d, &sc->drives, drive)
gv_ldi(d, sb, *flags);
}
}
/* List a single drive. */
void
gv_ldi(struct gv_drive *d, struct sbuf *sb, int flags)
{
struct gv_freelist *fl;
struct gv_sd *s;
/* Verbose listing. */
if (flags & GV_FLAG_V) {
sbuf_printf(sb, "Drive %s:\tDevice %s\n", d->name, d->device);
sbuf_printf(sb, "\t\tSize: %16jd bytes (%jd MB)\n",
(intmax_t)d->size, (intmax_t)d->size / MEGABYTE);
sbuf_printf(sb, "\t\tUsed: %16jd bytes (%jd MB)\n",
(intmax_t)d->size - d->avail,
(intmax_t)(d->size - d->avail) / MEGABYTE);
sbuf_printf(sb, "\t\tAvailable: %11jd bytes (%jd MB)\n",
(intmax_t)d->avail, (intmax_t)d->avail / MEGABYTE);
sbuf_printf(sb, "\t\tState: %s\n", gv_drivestate(d->state));
sbuf_printf(sb, "\t\tFlags: %d\n", d->flags);
/* Be very verbose. */
if (flags & GV_FLAG_VV) {
sbuf_printf(sb, "\t\tFree list contains %d entries:\n",
d->freelist_entries);
sbuf_printf(sb, "\t\t Offset\t Size\n");
LIST_FOREACH(fl, &d->freelist, freelist)
sbuf_printf(sb, "\t\t%9jd\t%9jd\n",
(intmax_t)fl->offset, (intmax_t)fl->size);
}
} else {
sbuf_printf(sb, "D %-21s State: %s\t/dev/%s\tA: %jd/%jd MB "
"(%d%%)\n", d->name, gv_drivestate(d->state), d->device,
(intmax_t)d->avail / MEGABYTE, (intmax_t)d->size / MEGABYTE,
d->size > 0 ? (int)((d->avail * 100) / d->size) : 0);
}
/* Recursive listing. */
if (flags & GV_FLAG_R) {
LIST_FOREACH(s, &d->subdisks, from_drive)
gv_lsi(s, sb, flags);
}
}
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