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freebsd-skq/sys/geom/raid/md_jmicron.c
Alexander Motin 40ea77a036 Merge GEOM direct dispatch changes from the projects/camlock branch. 
When safety requirements are met, it allows to avoid passing I/O requests
to GEOM g_up/g_down thread, executing them directly in the caller context.
That allows to avoid CPU bottlenecks in g_up/g_down threads, plus avoid
several context switches per I/O.

The defined now safety requirements are:
 - caller should not hold any locks and should be reenterable;
 - callee should not depend on GEOM dual-threaded concurency semantics;
 - on the way down, if request is unmapped while callee doesn't support it,
   the context should be sleepable;
 - kernel thread stack usage should be below 50%.

To keep compatibility with GEOM classes not meeting above requirements
new provider and consumer flags added:
 - G_CF_DIRECT_SEND -- consumer code meets caller requirements (request);
 - G_CF_DIRECT_RECEIVE -- consumer code meets callee requirements (done);
 - G_PF_DIRECT_SEND -- provider code meets caller requirements (done);
 - G_PF_DIRECT_RECEIVE -- provider code meets callee requirements (request).
Capable GEOM class can set them, allowing direct dispatch in cases where
it is safe.  If any of requirements are not met, request is queued to
g_up or g_down thread same as before.

Such GEOM classes were reviewed and updated to support direct dispatch:
CONCAT, DEV, DISK, GATE, MD, MIRROR, MULTIPATH, NOP, PART, RAID, STRIPE,
VFS, ZERO, ZFS::VDEV, ZFS::ZVOL, all classes based on g_slice KPI (LABEL,
MAP, FLASHMAP, etc).

To declare direct completion capability disk(9) KPI got new flag equivalent
to G_PF_DIRECT_SEND -- DISKFLAG_DIRECT_COMPLETION.  da(4) and ada(4) disk
drivers got it set now thanks to earlier CAM locking work.

This change more then twice increases peak block storage performance on
systems with manu CPUs, together with earlier CAM locking changes reaching
more then 1 million IOPS (512 byte raw reads from 16 SATA SSDs on 4 HBAs to
256 user-level threads).

Sponsored by:	iXsystems, Inc.
MFC after:	2 months
2013-10-22 08:22:19 +00:00

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/*-
* Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org>
* Copyright (c) 2000 - 2008 Søren Schmidt <sos@FreeBSD.org>
* 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 THE AUTHORS 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 THE AUTHORS 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/param.h>
#include <sys/bio.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/kobj.h>
#include <sys/limits.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <sys/taskqueue.h>
#include <geom/geom.h>
#include "geom/raid/g_raid.h"
#include "g_raid_md_if.h"
static MALLOC_DEFINE(M_MD_JMICRON, "md_jmicron_data", "GEOM_RAID JMicron metadata");
#define JMICRON_MAX_DISKS 8
#define JMICRON_MAX_SPARE 2
struct jmicron_raid_conf {
u_int8_t signature[2];
#define JMICRON_MAGIC "JM"
u_int16_t version;
#define JMICRON_VERSION 0x0001
u_int16_t checksum;
u_int8_t filler_1[10];
u_int32_t disk_id;
u_int32_t offset;
u_int32_t disk_sectors_high;
u_int16_t disk_sectors_low;
u_int8_t filler_2[2];
u_int8_t name[16];
u_int8_t type;
#define JMICRON_T_RAID0 0
#define JMICRON_T_RAID1 1
#define JMICRON_T_RAID01 2
#define JMICRON_T_CONCAT 3
#define JMICRON_T_RAID5 5
u_int8_t stripe_shift;
u_int16_t flags;
#define JMICRON_F_READY 0x0001
#define JMICRON_F_BOOTABLE 0x0002
#define JMICRON_F_BADSEC 0x0004
#define JMICRON_F_ACTIVE 0x0010
#define JMICRON_F_UNSYNC 0x0020
#define JMICRON_F_NEWEST 0x0040
u_int8_t filler_3[4];
u_int32_t spare[JMICRON_MAX_SPARE];
u_int32_t disks[JMICRON_MAX_DISKS];
#define JMICRON_DISK_MASK 0xFFFFFFF0
#define JMICRON_SEG_MASK 0x0000000F
u_int8_t filler_4[32];
u_int8_t filler_5[384];
};
struct g_raid_md_jmicron_perdisk {
struct jmicron_raid_conf *pd_meta;
int pd_disk_pos;
int pd_disk_id;
off_t pd_disk_size;
};
struct g_raid_md_jmicron_object {
struct g_raid_md_object mdio_base;
uint32_t mdio_config_id;
struct jmicron_raid_conf *mdio_meta;
struct callout mdio_start_co; /* STARTING state timer. */
int mdio_total_disks;
int mdio_disks_present;
int mdio_started;
int mdio_incomplete;
struct root_hold_token *mdio_rootmount; /* Root mount delay token. */
};
static g_raid_md_create_t g_raid_md_create_jmicron;
static g_raid_md_taste_t g_raid_md_taste_jmicron;
static g_raid_md_event_t g_raid_md_event_jmicron;
static g_raid_md_ctl_t g_raid_md_ctl_jmicron;
static g_raid_md_write_t g_raid_md_write_jmicron;
static g_raid_md_fail_disk_t g_raid_md_fail_disk_jmicron;
static g_raid_md_free_disk_t g_raid_md_free_disk_jmicron;
static g_raid_md_free_t g_raid_md_free_jmicron;
static kobj_method_t g_raid_md_jmicron_methods[] = {
KOBJMETHOD(g_raid_md_create, g_raid_md_create_jmicron),
KOBJMETHOD(g_raid_md_taste, g_raid_md_taste_jmicron),
KOBJMETHOD(g_raid_md_event, g_raid_md_event_jmicron),
KOBJMETHOD(g_raid_md_ctl, g_raid_md_ctl_jmicron),
KOBJMETHOD(g_raid_md_write, g_raid_md_write_jmicron),
KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_jmicron),
KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_jmicron),
KOBJMETHOD(g_raid_md_free, g_raid_md_free_jmicron),
{ 0, 0 }
};
static struct g_raid_md_class g_raid_md_jmicron_class = {
"JMicron",
g_raid_md_jmicron_methods,
sizeof(struct g_raid_md_jmicron_object),
.mdc_enable = 1,
.mdc_priority = 100
};
static void
g_raid_md_jmicron_print(struct jmicron_raid_conf *meta)
{
int k;
if (g_raid_debug < 1)
return;
printf("********* ATA JMicron RAID Metadata *********\n");
printf("signature <%c%c>\n", meta->signature[0], meta->signature[1]);
printf("version %04x\n", meta->version);
printf("checksum 0x%04x\n", meta->checksum);
printf("disk_id 0x%08x\n", meta->disk_id);
printf("offset 0x%08x\n", meta->offset);
printf("disk_sectors_high 0x%08x\n", meta->disk_sectors_high);
printf("disk_sectors_low 0x%04x\n", meta->disk_sectors_low);
printf("name <%.16s>\n", meta->name);
printf("type %d\n", meta->type);
printf("stripe_shift %d\n", meta->stripe_shift);
printf("flags %04x\n", meta->flags);
printf("spare ");
for (k = 0; k < JMICRON_MAX_SPARE; k++)
printf(" 0x%08x", meta->spare[k]);
printf("\n");
printf("disks ");
for (k = 0; k < JMICRON_MAX_DISKS; k++)
printf(" 0x%08x", meta->disks[k]);
printf("\n");
printf("=================================================\n");
}
static struct jmicron_raid_conf *
jmicron_meta_copy(struct jmicron_raid_conf *meta)
{
struct jmicron_raid_conf *nmeta;
nmeta = malloc(sizeof(*meta), M_MD_JMICRON, M_WAITOK);
memcpy(nmeta, meta, sizeof(*meta));
return (nmeta);
}
static int
jmicron_meta_total_disks(struct jmicron_raid_conf *meta)
{
int pos;
for (pos = 0; pos < JMICRON_MAX_DISKS; pos++) {
if (meta->disks[pos] == 0)
break;
}
return (pos);
}
static int
jmicron_meta_total_spare(struct jmicron_raid_conf *meta)
{
int pos, n;
n = 0;
for (pos = 0; pos < JMICRON_MAX_SPARE; pos++) {
if (meta->spare[pos] != 0)
n++;
}
return (n);
}
/*
* Generate fake Configuration ID based on disk IDs.
* Note: it will change after each disk set change.
*/
static uint32_t
jmicron_meta_config_id(struct jmicron_raid_conf *meta)
{
int pos;
uint32_t config_id;
config_id = 0;
for (pos = 0; pos < JMICRON_MAX_DISKS; pos++)
config_id += meta->disks[pos] << pos;
return (config_id);
}
static void
jmicron_meta_get_name(struct jmicron_raid_conf *meta, char *buf)
{
int i;
strncpy(buf, meta->name, 16);
buf[16] = 0;
for (i = 15; i >= 0; i--) {
if (buf[i] > 0x20)
break;
buf[i] = 0;
}
}
static void
jmicron_meta_put_name(struct jmicron_raid_conf *meta, char *buf)
{
memset(meta->name, 0x20, 16);
memcpy(meta->name, buf, MIN(strlen(buf), 16));
}
static int
jmicron_meta_find_disk(struct jmicron_raid_conf *meta, uint32_t id)
{
int pos;
id &= JMICRON_DISK_MASK;
for (pos = 0; pos < JMICRON_MAX_DISKS; pos++) {
if ((meta->disks[pos] & JMICRON_DISK_MASK) == id)
return (pos);
}
for (pos = 0; pos < JMICRON_MAX_SPARE; pos++) {
if ((meta->spare[pos] & JMICRON_DISK_MASK) == id)
return (-3);
}
return (-1);
}
static struct jmicron_raid_conf *
jmicron_meta_read(struct g_consumer *cp)
{
struct g_provider *pp;
struct jmicron_raid_conf *meta;
char *buf;
int error, i;
uint16_t checksum, *ptr;
pp = cp->provider;
/* Read the anchor sector. */
buf = g_read_data(cp,
pp->mediasize - pp->sectorsize, pp->sectorsize, &error);
if (buf == NULL) {
G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).",
pp->name, error);
return (NULL);
}
meta = (struct jmicron_raid_conf *)buf;
/* Check if this is an JMicron RAID struct */
if (strncmp(meta->signature, JMICRON_MAGIC, strlen(JMICRON_MAGIC))) {
G_RAID_DEBUG(1, "JMicron signature check failed on %s", pp->name);
g_free(buf);
return (NULL);
}
meta = malloc(sizeof(*meta), M_MD_JMICRON, M_WAITOK);
memcpy(meta, buf, min(sizeof(*meta), pp->sectorsize));
g_free(buf);
/* Check metadata checksum. */
for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i < 64; i++)
checksum += *ptr++;
if (checksum != 0) {
G_RAID_DEBUG(1, "JMicron checksum check failed on %s", pp->name);
free(meta, M_MD_JMICRON);
return (NULL);
}
return (meta);
}
static int
jmicron_meta_write(struct g_consumer *cp, struct jmicron_raid_conf *meta)
{
struct g_provider *pp;
char *buf;
int error, i;
uint16_t checksum, *ptr;
pp = cp->provider;
/* Recalculate checksum for case if metadata were changed. */
meta->checksum = 0;
for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i < 64; i++)
checksum += *ptr++;
meta->checksum -= checksum;
/* Create and fill buffer. */
buf = malloc(pp->sectorsize, M_MD_JMICRON, M_WAITOK | M_ZERO);
memcpy(buf, meta, sizeof(*meta));
error = g_write_data(cp,
pp->mediasize - pp->sectorsize, buf, pp->sectorsize);
if (error != 0) {
G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
pp->name, error);
}
free(buf, M_MD_JMICRON);
return (error);
}
static int
jmicron_meta_erase(struct g_consumer *cp)
{
struct g_provider *pp;
char *buf;
int error;
pp = cp->provider;
buf = malloc(pp->sectorsize, M_MD_JMICRON, M_WAITOK | M_ZERO);
error = g_write_data(cp,
pp->mediasize - pp->sectorsize, buf, pp->sectorsize);
if (error != 0) {
G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
pp->name, error);
}
free(buf, M_MD_JMICRON);
return (error);
}
static struct g_raid_disk *
g_raid_md_jmicron_get_disk(struct g_raid_softc *sc, int id)
{
struct g_raid_disk *disk;
struct g_raid_md_jmicron_perdisk *pd;
TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
pd = (struct g_raid_md_jmicron_perdisk *)disk->d_md_data;
if (pd->pd_disk_pos == id)
break;
}
return (disk);
}
static int
g_raid_md_jmicron_supported(int level, int qual, int disks, int force)
{
if (disks > 8)
return (0);
switch (level) {
case G_RAID_VOLUME_RL_RAID0:
if (disks < 1)
return (0);
if (!force && (disks < 2 || disks > 6))
return (0);
break;
case G_RAID_VOLUME_RL_RAID1:
if (disks < 1)
return (0);
if (!force && (disks != 2))
return (0);
break;
case G_RAID_VOLUME_RL_RAID1E:
if (disks < 2)
return (0);
if (!force && (disks != 4))
return (0);
break;
case G_RAID_VOLUME_RL_SINGLE:
if (disks != 1)
return (0);
if (!force)
return (0);
break;
case G_RAID_VOLUME_RL_CONCAT:
if (disks < 2)
return (0);
break;
case G_RAID_VOLUME_RL_RAID5:
if (disks < 3)
return (0);
if (qual != G_RAID_VOLUME_RLQ_R5LA)
return (0);
if (!force)
return (0);
break;
default:
return (0);
}
if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE)
return (0);
return (1);
}
static int
g_raid_md_jmicron_start_disk(struct g_raid_disk *disk)
{
struct g_raid_softc *sc;
struct g_raid_subdisk *sd, *tmpsd;
struct g_raid_disk *olddisk, *tmpdisk;
struct g_raid_md_object *md;
struct g_raid_md_jmicron_object *mdi;
struct g_raid_md_jmicron_perdisk *pd, *oldpd;
struct jmicron_raid_conf *meta;
int disk_pos, resurrection = 0;
sc = disk->d_softc;
md = sc->sc_md;
mdi = (struct g_raid_md_jmicron_object *)md;
meta = mdi->mdio_meta;
pd = (struct g_raid_md_jmicron_perdisk *)disk->d_md_data;
olddisk = NULL;
/* Find disk position in metadata by it's serial. */
if (pd->pd_meta != NULL)
disk_pos = jmicron_meta_find_disk(meta, pd->pd_disk_id);
else
disk_pos = -1;
if (disk_pos < 0) {
G_RAID_DEBUG1(1, sc, "Unknown, probably new or stale disk");
/* If we are in the start process, that's all for now. */
if (!mdi->mdio_started)
goto nofit;
/*
* If we have already started - try to get use of the disk.
* Try to replace OFFLINE disks first, then FAILED.
*/
TAILQ_FOREACH(tmpdisk, &sc->sc_disks, d_next) {
if (tmpdisk->d_state != G_RAID_DISK_S_OFFLINE &&
tmpdisk->d_state != G_RAID_DISK_S_FAILED)
continue;
/* Make sure this disk is big enough. */
TAILQ_FOREACH(sd, &tmpdisk->d_subdisks, sd_next) {
if (sd->sd_offset + sd->sd_size + 512 >
pd->pd_disk_size) {
G_RAID_DEBUG1(1, sc,
"Disk too small (%ju < %ju)",
pd->pd_disk_size,
sd->sd_offset + sd->sd_size + 512);
break;
}
}
if (sd != NULL)
continue;
if (tmpdisk->d_state == G_RAID_DISK_S_OFFLINE) {
olddisk = tmpdisk;
break;
} else if (olddisk == NULL)
olddisk = tmpdisk;
}
if (olddisk == NULL) {
nofit:
if (disk_pos == -3 || pd->pd_disk_pos == -3) {
g_raid_change_disk_state(disk,
G_RAID_DISK_S_SPARE);
return (1);
} else {
g_raid_change_disk_state(disk,
G_RAID_DISK_S_STALE);
return (0);
}
}
oldpd = (struct g_raid_md_jmicron_perdisk *)olddisk->d_md_data;
disk_pos = oldpd->pd_disk_pos;
resurrection = 1;
}
if (olddisk == NULL) {
/* Find placeholder by position. */
olddisk = g_raid_md_jmicron_get_disk(sc, disk_pos);
if (olddisk == NULL)
panic("No disk at position %d!", disk_pos);
if (olddisk->d_state != G_RAID_DISK_S_OFFLINE) {
G_RAID_DEBUG1(1, sc, "More then one disk for pos %d",
disk_pos);
g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE);
return (0);
}
oldpd = (struct g_raid_md_jmicron_perdisk *)olddisk->d_md_data;
}
/* Replace failed disk or placeholder with new disk. */
TAILQ_FOREACH_SAFE(sd, &olddisk->d_subdisks, sd_next, tmpsd) {
TAILQ_REMOVE(&olddisk->d_subdisks, sd, sd_next);
TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
sd->sd_disk = disk;
}
oldpd->pd_disk_pos = -2;
pd->pd_disk_pos = disk_pos;
/* Update global metadata just in case. */
meta->disks[disk_pos] = pd->pd_disk_id;
/* If it was placeholder -- destroy it. */
if (olddisk->d_state == G_RAID_DISK_S_OFFLINE) {
g_raid_destroy_disk(olddisk);
} else {
/* Otherwise, make it STALE_FAILED. */
g_raid_change_disk_state(olddisk, G_RAID_DISK_S_STALE_FAILED);
}
/* Welcome the new disk. */
g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
/*
* Different disks may have different sizes/offsets,
* especially in concat mode. Update.
*/
if (!resurrection) {
sd->sd_offset =
(off_t)pd->pd_meta->offset * 16 * 512; //ZZZ
sd->sd_size =
(((off_t)pd->pd_meta->disk_sectors_high << 16) +
pd->pd_meta->disk_sectors_low) * 512;
}
if (resurrection) {
/* Stale disk, almost same as new. */
g_raid_change_subdisk_state(sd,
G_RAID_SUBDISK_S_NEW);
} else if ((meta->flags & JMICRON_F_BADSEC) != 0 &&
(pd->pd_meta->flags & JMICRON_F_BADSEC) == 0) {
/* Cold-inserted or rebuilding disk. */
g_raid_change_subdisk_state(sd,
G_RAID_SUBDISK_S_NEW);
} else if (pd->pd_meta->flags & JMICRON_F_UNSYNC) {
/* Dirty or resyncing disk.. */
g_raid_change_subdisk_state(sd,
G_RAID_SUBDISK_S_STALE);
} else {
/* Up to date disk. */
g_raid_change_subdisk_state(sd,
G_RAID_SUBDISK_S_ACTIVE);
}
g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
G_RAID_EVENT_SUBDISK);
}
/* Update status of our need for spare. */
if (mdi->mdio_started) {
mdi->mdio_incomplete =
(g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) <
mdi->mdio_total_disks);
}
return (resurrection);
}
static void
g_disk_md_jmicron_retaste(void *arg, int pending)
{
G_RAID_DEBUG(1, "Array is not complete, trying to retaste.");
g_retaste(&g_raid_class);
free(arg, M_MD_JMICRON);
}
static void
g_raid_md_jmicron_refill(struct g_raid_softc *sc)
{
struct g_raid_md_object *md;
struct g_raid_md_jmicron_object *mdi;
struct g_raid_disk *disk;
struct task *task;
int update, na;
md = sc->sc_md;
mdi = (struct g_raid_md_jmicron_object *)md;
update = 0;
do {
/* Make sure we miss anything. */
na = g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE);
if (na == mdi->mdio_total_disks)
break;
G_RAID_DEBUG1(1, md->mdo_softc,
"Array is not complete (%d of %d), "
"trying to refill.", na, mdi->mdio_total_disks);
/* Try to get use some of STALE disks. */
TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
if (disk->d_state == G_RAID_DISK_S_STALE) {
update += g_raid_md_jmicron_start_disk(disk);
if (disk->d_state == G_RAID_DISK_S_ACTIVE)
break;
}
}
if (disk != NULL)
continue;
/* Try to get use some of SPARE disks. */
TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
if (disk->d_state == G_RAID_DISK_S_SPARE) {
update += g_raid_md_jmicron_start_disk(disk);
if (disk->d_state == G_RAID_DISK_S_ACTIVE)
break;
}
}
} while (disk != NULL);
/* Write new metadata if we changed something. */
if (update)
g_raid_md_write_jmicron(md, NULL, NULL, NULL);
/* Update status of our need for spare. */
mdi->mdio_incomplete = (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) <
mdi->mdio_total_disks);
/* Request retaste hoping to find spare. */
if (mdi->mdio_incomplete) {
task = malloc(sizeof(struct task),
M_MD_JMICRON, M_WAITOK | M_ZERO);
TASK_INIT(task, 0, g_disk_md_jmicron_retaste, task);
taskqueue_enqueue(taskqueue_swi, task);
}
}
static void
g_raid_md_jmicron_start(struct g_raid_softc *sc)
{
struct g_raid_md_object *md;
struct g_raid_md_jmicron_object *mdi;
struct g_raid_md_jmicron_perdisk *pd;
struct jmicron_raid_conf *meta;
struct g_raid_volume *vol;
struct g_raid_subdisk *sd;
struct g_raid_disk *disk;
off_t size;
int j, disk_pos;
char buf[17];
md = sc->sc_md;
mdi = (struct g_raid_md_jmicron_object *)md;
meta = mdi->mdio_meta;
/* Create volumes and subdisks. */
jmicron_meta_get_name(meta, buf);
vol = g_raid_create_volume(sc, buf, -1);
size = ((off_t)meta->disk_sectors_high << 16) + meta->disk_sectors_low;
size *= 512; //ZZZ
vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE;
if (meta->type == JMICRON_T_RAID0) {
vol->v_raid_level = G_RAID_VOLUME_RL_RAID0;
vol->v_mediasize = size * mdi->mdio_total_disks;
} else if (meta->type == JMICRON_T_RAID1) {
vol->v_raid_level = G_RAID_VOLUME_RL_RAID1;
vol->v_mediasize = size;
} else if (meta->type == JMICRON_T_RAID01) {
vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
vol->v_mediasize = size * mdi->mdio_total_disks / 2;
} else if (meta->type == JMICRON_T_CONCAT) {
if (mdi->mdio_total_disks == 1)
vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE;
else
vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT;
vol->v_mediasize = 0;
} else if (meta->type == JMICRON_T_RAID5) {
vol->v_raid_level = G_RAID_VOLUME_RL_RAID5;
vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LA;
vol->v_mediasize = size * (mdi->mdio_total_disks - 1);
} else {
vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN;
vol->v_mediasize = 0;
}
vol->v_strip_size = 1024 << meta->stripe_shift; //ZZZ
vol->v_disks_count = mdi->mdio_total_disks;
vol->v_sectorsize = 512; //ZZZ
for (j = 0; j < vol->v_disks_count; j++) {
sd = &vol->v_subdisks[j];
sd->sd_offset = (off_t)meta->offset * 16 * 512; //ZZZ
sd->sd_size = size;
}
g_raid_start_volume(vol);
/* Create disk placeholders to store data for later writing. */
for (disk_pos = 0; disk_pos < mdi->mdio_total_disks; disk_pos++) {
pd = malloc(sizeof(*pd), M_MD_JMICRON, M_WAITOK | M_ZERO);
pd->pd_disk_pos = disk_pos;
pd->pd_disk_id = meta->disks[disk_pos];
disk = g_raid_create_disk(sc);
disk->d_md_data = (void *)pd;
disk->d_state = G_RAID_DISK_S_OFFLINE;
sd = &vol->v_subdisks[disk_pos];
sd->sd_disk = disk;
TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
}
/* Make all disks found till the moment take their places. */
do {
TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
if (disk->d_state == G_RAID_DISK_S_NONE) {
g_raid_md_jmicron_start_disk(disk);
break;
}
}
} while (disk != NULL);
mdi->mdio_started = 1;
G_RAID_DEBUG1(0, sc, "Array started.");
g_raid_md_write_jmicron(md, NULL, NULL, NULL);
/* Pickup any STALE/SPARE disks to refill array if needed. */
g_raid_md_jmicron_refill(sc);
g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME);
callout_stop(&mdi->mdio_start_co);
G_RAID_DEBUG1(1, sc, "root_mount_rel %p", mdi->mdio_rootmount);
root_mount_rel(mdi->mdio_rootmount);
mdi->mdio_rootmount = NULL;
}
static void
g_raid_md_jmicron_new_disk(struct g_raid_disk *disk)
{
struct g_raid_softc *sc;
struct g_raid_md_object *md;
struct g_raid_md_jmicron_object *mdi;
struct jmicron_raid_conf *pdmeta;
struct g_raid_md_jmicron_perdisk *pd;
sc = disk->d_softc;
md = sc->sc_md;
mdi = (struct g_raid_md_jmicron_object *)md;
pd = (struct g_raid_md_jmicron_perdisk *)disk->d_md_data;
pdmeta = pd->pd_meta;
if (mdi->mdio_started) {
if (g_raid_md_jmicron_start_disk(disk))
g_raid_md_write_jmicron(md, NULL, NULL, NULL);
} else {
/*
* If we haven't started yet - update common metadata
* to get subdisks details, avoiding data from spare disks.
*/
if (mdi->mdio_meta == NULL ||
jmicron_meta_find_disk(mdi->mdio_meta,
mdi->mdio_meta->disk_id) == -3) {
if (mdi->mdio_meta != NULL)
free(mdi->mdio_meta, M_MD_JMICRON);
mdi->mdio_meta = jmicron_meta_copy(pdmeta);
mdi->mdio_total_disks = jmicron_meta_total_disks(pdmeta);
}
mdi->mdio_meta->flags |= pdmeta->flags & JMICRON_F_BADSEC;
mdi->mdio_disks_present++;
G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d+%d up)",
mdi->mdio_disks_present,
mdi->mdio_total_disks,
jmicron_meta_total_spare(mdi->mdio_meta));
/* If we collected all needed disks - start array. */
if (mdi->mdio_disks_present == mdi->mdio_total_disks +
jmicron_meta_total_spare(mdi->mdio_meta))
g_raid_md_jmicron_start(sc);
}
}
static void
g_raid_jmicron_go(void *arg)
{
struct g_raid_softc *sc;
struct g_raid_md_object *md;
struct g_raid_md_jmicron_object *mdi;
sc = arg;
md = sc->sc_md;
mdi = (struct g_raid_md_jmicron_object *)md;
if (!mdi->mdio_started) {
G_RAID_DEBUG1(0, sc, "Force array start due to timeout.");
g_raid_event_send(sc, G_RAID_NODE_E_START, 0);
}
}
static int
g_raid_md_create_jmicron(struct g_raid_md_object *md, struct g_class *mp,
struct g_geom **gp)
{
struct g_raid_softc *sc;
struct g_raid_md_jmicron_object *mdi;
char name[16];
mdi = (struct g_raid_md_jmicron_object *)md;
mdi->mdio_config_id = arc4random();
snprintf(name, sizeof(name), "JMicron-%08x", mdi->mdio_config_id);
sc = g_raid_create_node(mp, name, md);
if (sc == NULL)
return (G_RAID_MD_TASTE_FAIL);
md->mdo_softc = sc;
*gp = sc->sc_geom;
return (G_RAID_MD_TASTE_NEW);
}
static int
g_raid_md_taste_jmicron(struct g_raid_md_object *md, struct g_class *mp,
struct g_consumer *cp, struct g_geom **gp)
{
struct g_consumer *rcp;
struct g_provider *pp;
struct g_raid_md_jmicron_object *mdi, *mdi1;
struct g_raid_softc *sc;
struct g_raid_disk *disk;
struct jmicron_raid_conf *meta;
struct g_raid_md_jmicron_perdisk *pd;
struct g_geom *geom;
int disk_pos, result, spare, len;
char name[16];
uint16_t vendor;
G_RAID_DEBUG(1, "Tasting JMicron on %s", cp->provider->name);
mdi = (struct g_raid_md_jmicron_object *)md;
pp = cp->provider;
/* Read metadata from device. */
meta = NULL;
vendor = 0xffff;
if (g_access(cp, 1, 0, 0) != 0)
return (G_RAID_MD_TASTE_FAIL);
g_topology_unlock();
len = 2;
if (pp->geom->rank == 1)
g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor);
meta = jmicron_meta_read(cp);
g_topology_lock();
g_access(cp, -1, 0, 0);
if (meta == NULL) {
if (g_raid_aggressive_spare) {
if (vendor == 0x197b) {
G_RAID_DEBUG(1,
"No JMicron metadata, forcing spare.");
spare = 2;
goto search;
} else {
G_RAID_DEBUG(1,
"JMicron vendor mismatch 0x%04x != 0x197b",
vendor);
}
}
return (G_RAID_MD_TASTE_FAIL);
}
/* Check this disk position in obtained metadata. */
disk_pos = jmicron_meta_find_disk(meta, meta->disk_id);
if (disk_pos == -1) {
G_RAID_DEBUG(1, "JMicron disk_id %08x not found",
meta->disk_id);
goto fail1;
}
/* Metadata valid. Print it. */
g_raid_md_jmicron_print(meta);
G_RAID_DEBUG(1, "JMicron disk position %d", disk_pos);
spare = (disk_pos == -2) ? 1 : 0;
search:
/* Search for matching node. */
sc = NULL;
mdi1 = NULL;
LIST_FOREACH(geom, &mp->geom, geom) {
sc = geom->softc;
if (sc == NULL)
continue;
if (sc->sc_stopping != 0)
continue;
if (sc->sc_md->mdo_class != md->mdo_class)
continue;
mdi1 = (struct g_raid_md_jmicron_object *)sc->sc_md;
if (spare == 2) {
if (mdi1->mdio_incomplete)
break;
} else {
if (mdi1->mdio_config_id ==
jmicron_meta_config_id(meta))
break;
}
}
/* Found matching node. */
if (geom != NULL) {
G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
result = G_RAID_MD_TASTE_EXISTING;
} else if (spare) { /* Not found needy node -- left for later. */
G_RAID_DEBUG(1, "Spare is not needed at this time");
goto fail1;
} else { /* Not found matching node -- create one. */
result = G_RAID_MD_TASTE_NEW;
mdi->mdio_config_id = jmicron_meta_config_id(meta);
snprintf(name, sizeof(name), "JMicron-%08x",
mdi->mdio_config_id);
sc = g_raid_create_node(mp, name, md);
md->mdo_softc = sc;
geom = sc->sc_geom;
callout_init(&mdi->mdio_start_co, 1);
callout_reset(&mdi->mdio_start_co, g_raid_start_timeout * hz,
g_raid_jmicron_go, sc);
mdi->mdio_rootmount = root_mount_hold("GRAID-JMicron");
G_RAID_DEBUG1(1, sc, "root_mount_hold %p", mdi->mdio_rootmount);
}
rcp = g_new_consumer(geom);
rcp->flags |= G_CF_DIRECT_RECEIVE;
g_attach(rcp, pp);
if (g_access(rcp, 1, 1, 1) != 0)
; //goto fail1;
g_topology_unlock();
sx_xlock(&sc->sc_lock);
pd = malloc(sizeof(*pd), M_MD_JMICRON, M_WAITOK | M_ZERO);
pd->pd_meta = meta;
if (spare == 2) {
pd->pd_disk_pos = -3;
pd->pd_disk_id = arc4random() & JMICRON_DISK_MASK;
} else {
pd->pd_disk_pos = -1;
pd->pd_disk_id = meta->disk_id;
}
pd->pd_disk_size = pp->mediasize;
disk = g_raid_create_disk(sc);
disk->d_md_data = (void *)pd;
disk->d_consumer = rcp;
rcp->private = disk;
g_raid_get_disk_info(disk);
g_raid_md_jmicron_new_disk(disk);
sx_xunlock(&sc->sc_lock);
g_topology_lock();
*gp = geom;
return (result);
fail1:
free(meta, M_MD_JMICRON);
return (G_RAID_MD_TASTE_FAIL);
}
static int
g_raid_md_event_jmicron(struct g_raid_md_object *md,
struct g_raid_disk *disk, u_int event)
{
struct g_raid_softc *sc;
struct g_raid_subdisk *sd;
struct g_raid_md_jmicron_object *mdi;
struct g_raid_md_jmicron_perdisk *pd;
sc = md->mdo_softc;
mdi = (struct g_raid_md_jmicron_object *)md;
if (disk == NULL) {
switch (event) {
case G_RAID_NODE_E_START:
if (!mdi->mdio_started)
g_raid_md_jmicron_start(sc);
return (0);
}
return (-1);
}
pd = (struct g_raid_md_jmicron_perdisk *)disk->d_md_data;
switch (event) {
case G_RAID_DISK_E_DISCONNECTED:
/* If disk was assigned, just update statuses. */
if (pd->pd_disk_pos >= 0) {
g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
if (disk->d_consumer) {
g_raid_kill_consumer(sc, disk->d_consumer);
disk->d_consumer = NULL;
}
TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
g_raid_change_subdisk_state(sd,
G_RAID_SUBDISK_S_NONE);
g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED,
G_RAID_EVENT_SUBDISK);
}
} else {
/* Otherwise -- delete. */
g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
g_raid_destroy_disk(disk);
}
/* Write updated metadata to all disks. */
g_raid_md_write_jmicron(md, NULL, NULL, NULL);
/* Check if anything left except placeholders. */
if (g_raid_ndisks(sc, -1) ==
g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
g_raid_destroy_node(sc, 0);
else
g_raid_md_jmicron_refill(sc);
return (0);
}
return (-2);
}
static int
g_raid_md_ctl_jmicron(struct g_raid_md_object *md,
struct gctl_req *req)
{
struct g_raid_softc *sc;
struct g_raid_volume *vol;
struct g_raid_subdisk *sd;
struct g_raid_disk *disk;
struct g_raid_md_jmicron_object *mdi;
struct g_raid_md_jmicron_perdisk *pd;
struct g_consumer *cp;
struct g_provider *pp;
char arg[16];
const char *verb, *volname, *levelname, *diskname;
int *nargs, *force;
off_t size, sectorsize, strip;
intmax_t *sizearg, *striparg;
int numdisks, i, len, level, qual, update;
int error;
sc = md->mdo_softc;
mdi = (struct g_raid_md_jmicron_object *)md;
verb = gctl_get_param(req, "verb", NULL);
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
error = 0;
if (strcmp(verb, "label") == 0) {
if (*nargs < 4) {
gctl_error(req, "Invalid number of arguments.");
return (-1);
}
volname = gctl_get_asciiparam(req, "arg1");
if (volname == NULL) {
gctl_error(req, "No volume name.");
return (-2);
}
levelname = gctl_get_asciiparam(req, "arg2");
if (levelname == NULL) {
gctl_error(req, "No RAID level.");
return (-3);
}
if (strcasecmp(levelname, "RAID5") == 0)
levelname = "RAID5-LA";
if (g_raid_volume_str2level(levelname, &level, &qual)) {
gctl_error(req, "Unknown RAID level '%s'.", levelname);
return (-4);
}
numdisks = *nargs - 3;
force = gctl_get_paraml(req, "force", sizeof(*force));
if (!g_raid_md_jmicron_supported(level, qual, numdisks,
force ? *force : 0)) {
gctl_error(req, "Unsupported RAID level "
"(0x%02x/0x%02x), or number of disks (%d).",
level, qual, numdisks);
return (-5);
}
/* Search for disks, connect them and probe. */
size = 0x7fffffffffffffffllu;
sectorsize = 0;
for (i = 0; i < numdisks; i++) {
snprintf(arg, sizeof(arg), "arg%d", i + 3);
diskname = gctl_get_asciiparam(req, arg);
if (diskname == NULL) {
gctl_error(req, "No disk name (%s).", arg);
error = -6;
break;
}
if (strcmp(diskname, "NONE") == 0) {
cp = NULL;
pp = NULL;
} else {
g_topology_lock();
cp = g_raid_open_consumer(sc, diskname);
if (cp == NULL) {
gctl_error(req, "Can't open '%s'.",
diskname);
g_topology_unlock();
error = -7;
break;
}
pp = cp->provider;
}
pd = malloc(sizeof(*pd), M_MD_JMICRON, M_WAITOK | M_ZERO);
pd->pd_disk_pos = i;
pd->pd_disk_id = arc4random() & JMICRON_DISK_MASK;
disk = g_raid_create_disk(sc);
disk->d_md_data = (void *)pd;
disk->d_consumer = cp;
if (cp == NULL)
continue;
cp->private = disk;
g_topology_unlock();
g_raid_get_disk_info(disk);
pd->pd_disk_size = pp->mediasize;
if (size > pp->mediasize)
size = pp->mediasize;
if (sectorsize < pp->sectorsize)
sectorsize = pp->sectorsize;
}
if (error != 0)
return (error);
if (sectorsize <= 0) {
gctl_error(req, "Can't get sector size.");
return (-8);
}
/* Reserve space for metadata. */
size -= sectorsize;
/* Handle size argument. */
len = sizeof(*sizearg);
sizearg = gctl_get_param(req, "size", &len);
if (sizearg != NULL && len == sizeof(*sizearg) &&
*sizearg > 0) {
if (*sizearg > size) {
gctl_error(req, "Size too big %lld > %lld.",
(long long)*sizearg, (long long)size);
return (-9);
}
size = *sizearg;
}
/* Handle strip argument. */
strip = 131072;
len = sizeof(*striparg);
striparg = gctl_get_param(req, "strip", &len);
if (striparg != NULL && len == sizeof(*striparg) &&
*striparg > 0) {
if (*striparg < sectorsize) {
gctl_error(req, "Strip size too small.");
return (-10);
}
if (*striparg % sectorsize != 0) {
gctl_error(req, "Incorrect strip size.");
return (-11);
}
if (strip > 65535 * sectorsize) {
gctl_error(req, "Strip size too big.");
return (-12);
}
strip = *striparg;
}
/* Round size down to strip or sector. */
if (level == G_RAID_VOLUME_RL_RAID1)
size -= (size % sectorsize);
else if (level == G_RAID_VOLUME_RL_RAID1E &&
(numdisks & 1) != 0)
size -= (size % (2 * strip));
else
size -= (size % strip);
if (size <= 0) {
gctl_error(req, "Size too small.");
return (-13);
}
if (size > 0xffffffffffffllu * sectorsize) {
gctl_error(req, "Size too big.");
return (-14);
}
/* We have all we need, create things: volume, ... */
mdi->mdio_total_disks = numdisks;
mdi->mdio_started = 1;
vol = g_raid_create_volume(sc, volname, -1);
vol->v_md_data = (void *)(intptr_t)0;
vol->v_raid_level = level;
vol->v_raid_level_qualifier = qual;
vol->v_strip_size = strip;
vol->v_disks_count = numdisks;
if (level == G_RAID_VOLUME_RL_RAID0 ||
level == G_RAID_VOLUME_RL_CONCAT ||
level == G_RAID_VOLUME_RL_SINGLE)
vol->v_mediasize = size * numdisks;
else if (level == G_RAID_VOLUME_RL_RAID1)
vol->v_mediasize = size;
else if (level == G_RAID_VOLUME_RL_RAID5)
vol->v_mediasize = size * (numdisks - 1);
else { /* RAID1E */
vol->v_mediasize = ((size * numdisks) / strip / 2) *
strip;
}
vol->v_sectorsize = sectorsize;
g_raid_start_volume(vol);
/* , and subdisks. */
TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
pd = (struct g_raid_md_jmicron_perdisk *)disk->d_md_data;
sd = &vol->v_subdisks[pd->pd_disk_pos];
sd->sd_disk = disk;
sd->sd_offset = 0;
sd->sd_size = size;
TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
if (sd->sd_disk->d_consumer != NULL) {
g_raid_change_disk_state(disk,
G_RAID_DISK_S_ACTIVE);
g_raid_change_subdisk_state(sd,
G_RAID_SUBDISK_S_ACTIVE);
g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
G_RAID_EVENT_SUBDISK);
} else {
g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
}
}
/* Write metadata based on created entities. */
G_RAID_DEBUG1(0, sc, "Array started.");
g_raid_md_write_jmicron(md, NULL, NULL, NULL);
/* Pickup any STALE/SPARE disks to refill array if needed. */
g_raid_md_jmicron_refill(sc);
g_raid_event_send(vol, G_RAID_VOLUME_E_START,
G_RAID_EVENT_VOLUME);
return (0);
}
if (strcmp(verb, "delete") == 0) {
/* Check if some volume is still open. */
force = gctl_get_paraml(req, "force", sizeof(*force));
if (force != NULL && *force == 0 &&
g_raid_nopens(sc) != 0) {
gctl_error(req, "Some volume is still open.");
return (-4);
}
TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
if (disk->d_consumer)
jmicron_meta_erase(disk->d_consumer);
}
g_raid_destroy_node(sc, 0);
return (0);
}
if (strcmp(verb, "remove") == 0 ||
strcmp(verb, "fail") == 0) {
if (*nargs < 2) {
gctl_error(req, "Invalid number of arguments.");
return (-1);
}
for (i = 1; i < *nargs; i++) {
snprintf(arg, sizeof(arg), "arg%d", i);
diskname = gctl_get_asciiparam(req, arg);
if (diskname == NULL) {
gctl_error(req, "No disk name (%s).", arg);
error = -2;
break;
}
if (strncmp(diskname, "/dev/", 5) == 0)
diskname += 5;
TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
if (disk->d_consumer != NULL &&
disk->d_consumer->provider != NULL &&
strcmp(disk->d_consumer->provider->name,
diskname) == 0)
break;
}
if (disk == NULL) {
gctl_error(req, "Disk '%s' not found.",
diskname);
error = -3;
break;
}
if (strcmp(verb, "fail") == 0) {
g_raid_md_fail_disk_jmicron(md, NULL, disk);
continue;
}
pd = (struct g_raid_md_jmicron_perdisk *)disk->d_md_data;
/* Erase metadata on deleting disk. */
jmicron_meta_erase(disk->d_consumer);
/* If disk was assigned, just update statuses. */
if (pd->pd_disk_pos >= 0) {
g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
g_raid_kill_consumer(sc, disk->d_consumer);
disk->d_consumer = NULL;
TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
g_raid_change_subdisk_state(sd,
G_RAID_SUBDISK_S_NONE);
g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED,
G_RAID_EVENT_SUBDISK);
}
} else {
/* Otherwise -- delete. */
g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
g_raid_destroy_disk(disk);
}
}
/* Write updated metadata to remaining disks. */
g_raid_md_write_jmicron(md, NULL, NULL, NULL);
/* Check if anything left except placeholders. */
if (g_raid_ndisks(sc, -1) ==
g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
g_raid_destroy_node(sc, 0);
else
g_raid_md_jmicron_refill(sc);
return (error);
}
if (strcmp(verb, "insert") == 0) {
if (*nargs < 2) {
gctl_error(req, "Invalid number of arguments.");
return (-1);
}
update = 0;
for (i = 1; i < *nargs; i++) {
/* Get disk name. */
snprintf(arg, sizeof(arg), "arg%d", i);
diskname = gctl_get_asciiparam(req, arg);
if (diskname == NULL) {
gctl_error(req, "No disk name (%s).", arg);
error = -3;
break;
}
/* Try to find provider with specified name. */
g_topology_lock();
cp = g_raid_open_consumer(sc, diskname);
if (cp == NULL) {
gctl_error(req, "Can't open disk '%s'.",
diskname);
g_topology_unlock();
error = -4;
break;
}
pp = cp->provider;
pd = malloc(sizeof(*pd), M_MD_JMICRON, M_WAITOK | M_ZERO);
pd->pd_disk_pos = -3;
pd->pd_disk_id = arc4random() & JMICRON_DISK_MASK;
pd->pd_disk_size = pp->mediasize;
disk = g_raid_create_disk(sc);
disk->d_consumer = cp;
disk->d_md_data = (void *)pd;
cp->private = disk;
g_topology_unlock();
g_raid_get_disk_info(disk);
/* Welcome the "new" disk. */
update += g_raid_md_jmicron_start_disk(disk);
if (disk->d_state != G_RAID_DISK_S_ACTIVE &&
disk->d_state != G_RAID_DISK_S_SPARE) {
gctl_error(req, "Disk '%s' doesn't fit.",
diskname);
g_raid_destroy_disk(disk);
error = -8;
break;
}
}
/* Write new metadata if we changed something. */
if (update)
g_raid_md_write_jmicron(md, NULL, NULL, NULL);
return (error);
}
gctl_error(req, "Command '%s' is not supported.", verb);
return (-100);
}
static int
g_raid_md_write_jmicron(struct g_raid_md_object *md, struct g_raid_volume *tvol,
struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
{
struct g_raid_softc *sc;
struct g_raid_volume *vol;
struct g_raid_subdisk *sd;
struct g_raid_disk *disk;
struct g_raid_md_jmicron_object *mdi;
struct g_raid_md_jmicron_perdisk *pd;
struct jmicron_raid_conf *meta;
int i, spares;
sc = md->mdo_softc;
mdi = (struct g_raid_md_jmicron_object *)md;
if (sc->sc_stopping == G_RAID_DESTROY_HARD)
return (0);
/* There is only one volume. */
vol = TAILQ_FIRST(&sc->sc_volumes);
/* Fill global fields. */
meta = malloc(sizeof(*meta), M_MD_JMICRON, M_WAITOK | M_ZERO);
strncpy(meta->signature, JMICRON_MAGIC, 2);
meta->version = JMICRON_VERSION;
jmicron_meta_put_name(meta, vol->v_name);
if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0)
meta->type = JMICRON_T_RAID0;
else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1)
meta->type = JMICRON_T_RAID1;
else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
meta->type = JMICRON_T_RAID01;
else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT ||
vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE)
meta->type = JMICRON_T_CONCAT;
else
meta->type = JMICRON_T_RAID5;
meta->stripe_shift = fls(vol->v_strip_size / 2048);
meta->flags = JMICRON_F_READY | JMICRON_F_BOOTABLE;
for (i = 0; i < vol->v_disks_count; i++) {
sd = &vol->v_subdisks[i];
if (sd->sd_disk == NULL || sd->sd_disk->d_md_data == NULL)
meta->disks[i] = 0xffffffff;
else {
pd = (struct g_raid_md_jmicron_perdisk *)
sd->sd_disk->d_md_data;
meta->disks[i] = pd->pd_disk_id;
}
if (sd->sd_state < G_RAID_SUBDISK_S_STALE)
meta->flags |= JMICRON_F_BADSEC;
if (vol->v_dirty)
meta->flags |= JMICRON_F_UNSYNC;
}
/* Put spares to their slots. */
spares = 0;
TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
pd = (struct g_raid_md_jmicron_perdisk *)disk->d_md_data;
if (disk->d_state != G_RAID_DISK_S_SPARE)
continue;
meta->spare[spares] = pd->pd_disk_id;
if (++spares >= 2)
break;
}
/* We are done. Print meta data and store them to disks. */
if (mdi->mdio_meta != NULL)
free(mdi->mdio_meta, M_MD_JMICRON);
mdi->mdio_meta = meta;
TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
pd = (struct g_raid_md_jmicron_perdisk *)disk->d_md_data;
if (disk->d_state != G_RAID_DISK_S_ACTIVE &&
disk->d_state != G_RAID_DISK_S_SPARE)
continue;
if (pd->pd_meta != NULL) {
free(pd->pd_meta, M_MD_JMICRON);
pd->pd_meta = NULL;
}
pd->pd_meta = jmicron_meta_copy(meta);
pd->pd_meta->disk_id = pd->pd_disk_id;
if ((sd = TAILQ_FIRST(&disk->d_subdisks)) != NULL) {
pd->pd_meta->offset =
(sd->sd_offset / 512) / 16;
pd->pd_meta->disk_sectors_high =
(sd->sd_size / 512) >> 16;
pd->pd_meta->disk_sectors_low =
(sd->sd_size / 512) & 0xffff;
if (sd->sd_state < G_RAID_SUBDISK_S_STALE)
pd->pd_meta->flags &= ~JMICRON_F_BADSEC;
else if (sd->sd_state < G_RAID_SUBDISK_S_ACTIVE)
pd->pd_meta->flags |= JMICRON_F_UNSYNC;
}
G_RAID_DEBUG(1, "Writing JMicron metadata to %s",
g_raid_get_diskname(disk));
g_raid_md_jmicron_print(pd->pd_meta);
jmicron_meta_write(disk->d_consumer, pd->pd_meta);
}
return (0);
}
static int
g_raid_md_fail_disk_jmicron(struct g_raid_md_object *md,
struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
{
struct g_raid_softc *sc;
struct g_raid_md_jmicron_perdisk *pd;
struct g_raid_subdisk *sd;
sc = md->mdo_softc;
pd = (struct g_raid_md_jmicron_perdisk *)tdisk->d_md_data;
/* We can't fail disk that is not a part of array now. */
if (pd->pd_disk_pos < 0)
return (-1);
if (tdisk->d_consumer)
jmicron_meta_erase(tdisk->d_consumer);
/* Change states. */
g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
g_raid_change_subdisk_state(sd,
G_RAID_SUBDISK_S_FAILED);
g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
G_RAID_EVENT_SUBDISK);
}
/* Write updated metadata to remaining disks. */
g_raid_md_write_jmicron(md, NULL, NULL, tdisk);
/* Check if anything left except placeholders. */
if (g_raid_ndisks(sc, -1) ==
g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
g_raid_destroy_node(sc, 0);
else
g_raid_md_jmicron_refill(sc);
return (0);
}
static int
g_raid_md_free_disk_jmicron(struct g_raid_md_object *md,
struct g_raid_disk *disk)
{
struct g_raid_md_jmicron_perdisk *pd;
pd = (struct g_raid_md_jmicron_perdisk *)disk->d_md_data;
if (pd->pd_meta != NULL) {
free(pd->pd_meta, M_MD_JMICRON);
pd->pd_meta = NULL;
}
free(pd, M_MD_JMICRON);
disk->d_md_data = NULL;
return (0);
}
static int
g_raid_md_free_jmicron(struct g_raid_md_object *md)
{
struct g_raid_md_jmicron_object *mdi;
mdi = (struct g_raid_md_jmicron_object *)md;
if (!mdi->mdio_started) {
mdi->mdio_started = 0;
callout_stop(&mdi->mdio_start_co);
G_RAID_DEBUG1(1, md->mdo_softc,
"root_mount_rel %p", mdi->mdio_rootmount);
root_mount_rel(mdi->mdio_rootmount);
mdi->mdio_rootmount = NULL;
}
if (mdi->mdio_meta != NULL) {
free(mdi->mdio_meta, M_MD_JMICRON);
mdi->mdio_meta = NULL;
}
return (0);
}
G_RAID_MD_DECLARE(jmicron, "JMicron");
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