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- Introduce option for hardcoding providers' names into metadata.

Browse Source 
It allows to fix problems when last provider's sector is shared between few
  providers.
- Bump version number for CONCAT and STRIPE and add code for backward
  compatibility.
- Do not bump version number of MIRROR, as it wasn't officially introduced yet.
  Even if someone started to play with it, there is no big deal, because
  wrong MD5 sum of metadata will deny those providers.
- Update manual pages.
- Add version history to g_(stripe|concat).h files.
This commit is contained in:
Pawel Jakub Dawidek 2004-08-09 11:29:42 +00:00
parent d2df8e85e9
commit 6c74f5177c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=133373
10 changed files with 139 additions and 48 deletions
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28
sbin/geom/class/concat/gconcat.8
View File

@ -35,35 +35,35 @@
.Cm create
.Op Fl v
.Ar name
.Ar dev1
.Ar dev2
.Op Ar dev3 Op Ar ...
.Ar prov
.Ar prov
.Op Ar prov Op Ar ...
.Nm
.Cm destroy
.Op Fl fv
.Ar name
.Op Ar name2 Op Ar ...
.Op Ar name Op Ar ...
.Nm
.Cm label
.Op Fl v
.Op Fl hv
.Ar name
.Ar dev1
.Ar dev2
.Op Ar dev3 Op Ar ...
.Ar prov
.Ar prov
.Op Ar prov Op Ar ...
.Nm
.Cm stop
.Op Fl fv
.Ar name
.Op Ar name2 Op Ar ...
.Op Ar name Op Ar ...
.Nm
.Cm clear
.Op Fl v
.Ar dev1
.Op Ar dev2 Op Ar ...
.Ar prov
.Op Ar prov Op Ar ...
.Nm
.Cm dump
.Ar dev1
.Op Ar dev2 Op Ar ...
.Ar prov
.Op Ar prov Op Ar ...
.Nm
.Cm list
.Op Ar name Op Ar ...
@ -140,6 +140,8 @@ Additional options:
.Bl -tag -width indent
.It Fl f
Force the removal of the specified concatenated device.
.It Fl h
Hardcode providers' names in metadata.
.It Fl v
Be more verbose.
.El

35
sbin/geom/class/concat/geom_concat.c
View File

@ -29,6 +29,7 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <errno.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -59,7 +60,12 @@ struct g_command class_commands[] = {
}
},
{ "dump", 0, concat_main, G_NULL_OPTS },
{ "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, concat_main, G_NULL_OPTS },
{ "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, concat_main,
{
{ 'h', "hardcode", NULL, G_TYPE_NONE },
G_OPT_SENTINEL
}
},
{ "stop", G_FLAG_VERBOSE, NULL,
{
{ 'f', "force", NULL, G_TYPE_NONE },
@ -77,12 +83,12 @@ void
usage(const char *name)
{
fprintf(stderr, "usage: %s create [-v] <name> <dev1> <dev2> [dev3 [...]]\n", name);
fprintf(stderr, " %s destroy [-fv] <name> [name2 [...]]\n", name);
fprintf(stderr, " %s label [-v] <name> <dev1> <dev2> [dev3 [...]]\n", name);
fprintf(stderr, " %s stop [-fv] <name> [name2 [...]]\n", name);
fprintf(stderr, " %s clear [-v] <dev1> [dev2 [...]]\n", name);
fprintf(stderr, " %s dump <dev1> [dev2 [...]]\n", name);
fprintf(stderr, "usage: %s create [-v] <name> <prov> <prov> [prov [...]]\n", name);
fprintf(stderr, " %s destroy [-fv] <name> [name [...]]\n", name);
fprintf(stderr, " %s label [-hv] <name> <prov> <prov> [prov [...]]\n", name);
fprintf(stderr, " %s stop [-fv] <name> [name [...]]\n", name);
fprintf(stderr, " %s clear [-v] <prov> [prov [...]]\n", name);
fprintf(stderr, " %s dump <prov> [prov [...]]\n", name);
}
static void
@ -116,7 +122,7 @@ concat_label(struct gctl_req *req)
const char *name;
char param[16];
unsigned i;
int *nargs, error;
int *hardcode, *nargs, error;
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
if (nargs == NULL) {
@ -127,6 +133,11 @@ concat_label(struct gctl_req *req)
gctl_error(req, "Too few arguments.");
return;
}
hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode));
if (hardcode == NULL) {
gctl_error(req, "No '%s' argument.", "hardcode");
return;
}
/*
* Clear last sector first to spoil all components if device exists.
@ -162,6 +173,13 @@ concat_label(struct gctl_req *req)
name = gctl_get_asciiparam(req, param);
md.md_no = i - 1;
if (!*hardcode)
bzero(md.md_provider, sizeof(md.md_provider));
else {
if (strncmp(name, _PATH_DEV, strlen(_PATH_DEV)) == 0)
name += strlen(_PATH_DEV);
strlcpy(md.md_provider, name, sizeof(md.md_provider));
}
concat_metadata_encode(&md, sector);
error = g_metadata_store(name, sector, sizeof(sector));
if (error != 0) {
@ -219,6 +237,7 @@ concat_metadata_dump(const struct g_concat_metadata *md)
printf(" Device ID: %u\n", (u_int)md->md_id);
printf(" Disk number: %u\n", (u_int)md->md_no);
printf("Total number of disks: %u\n", (u_int)md->md_all);
printf(" Hardcoded provider: %s\n", md->md_provider);
}
static void

29
sbin/geom/class/stripe/geom_stripe.c
View File

@ -29,6 +29,7 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <errno.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
@ -69,6 +70,7 @@ struct g_command class_commands[] = {
{ "dump", 0, stripe_main, G_NULL_OPTS },
{ "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, stripe_main,
{
{ 'h', "hardcode", NULL, G_TYPE_NONE },
{ 's', "stripesize", &stripesize, G_TYPE_NUMBER },
G_OPT_SENTINEL
}
@ -89,12 +91,12 @@ void
usage(const char *name)
{
fprintf(stderr, "usage: %s create [-v] [-s stripesize] <name> <dev1> <dev2> [dev3 [...]]\n", name);
fprintf(stderr, " %s destroy [-fv] <name> [name2 [...]]\n", name);
fprintf(stderr, " %s label [-v] [-s stripesize] <name> <dev1> <dev2> [dev3 [...]]\n", name);
fprintf(stderr, " %s stop [-fv] <name> [name2 [...]]\n", name);
fprintf(stderr, " %s clear [-v] <dev1> [dev2 [...]]\n", name);
fprintf(stderr, " %s dump <dev1> [dev2 [...]]\n", name);
fprintf(stderr, "usage: %s create [-hv] [-s stripesize] <name> <prov> <prov> [prov [...]]\n", name);
fprintf(stderr, " %s destroy [-fv] <name> [name [...]]\n", name);
fprintf(stderr, " %s label [-hv] [-s stripesize] <name> <prov> <prov> [prov [...]]\n", name);
fprintf(stderr, " %s stop [-fv] <name> [name [...]]\n", name);
fprintf(stderr, " %s clear [-v] <prov> [prov [...]]\n", name);
fprintf(stderr, " %s dump <prov> [prov [...]]\n", name);
}
static void
@ -129,7 +131,7 @@ stripe_label(struct gctl_req *req)
const char *name;
char param[16];
unsigned i;
int *nargs, error;
int *hardcode, *nargs, error;
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
if (nargs == NULL) {
@ -140,6 +142,11 @@ stripe_label(struct gctl_req *req)
gctl_error(req, "Too few arguments.");
return;
}
hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode));
if (hardcode == NULL) {
gctl_error(req, "No '%s' argument.", "hardcode");
return;
}
/*
* Clear last sector first to spoil all components if device exists.
@ -181,6 +188,13 @@ stripe_label(struct gctl_req *req)
name = gctl_get_asciiparam(req, param);
md.md_no = i - 1;
if (!*hardcode)
bzero(md.md_provider, sizeof(md.md_provider));
else {
if (strncmp(name, _PATH_DEV, strlen(_PATH_DEV)) == 0)
name += strlen(_PATH_DEV);
strlcpy(md.md_provider, name, sizeof(md.md_provider));
}
stripe_metadata_encode(&md, sector);
error = g_metadata_store(name, sector, sizeof(sector));
if (error != 0) {
@ -239,6 +253,7 @@ stripe_metadata_dump(const struct g_stripe_metadata *md)
printf(" Disk number: %u\n", (u_int)md->md_no);
printf("Total number of disks: %u\n", (u_int)md->md_all);
printf(" Stripe size: %u\n", (u_int)md->md_stripesize);
printf(" Hardcoded provider: %s\n", md->md_provider);
}
static void

28
sbin/geom/class/stripe/gstripe.8
View File

@ -36,36 +36,36 @@
.Op Fl v
.Op Fl s Ar stripesize
.Ar name
.Ar dev1
.Ar dev2
.Op Ar dev3 Op Ar ...
.Ar prov
.Ar prov
.Op Ar prov Op Ar ...
.Nm
.Cm destroy
.Op Fl fv
.Ar name
.Op Ar name2 Op Ar ...
.Op Ar name Op Ar ...
.Nm
.Cm label
.Op Fl v
.Op Fl hv
.Op Fl s Ar stripesize
.Ar name
.Ar dev1
.Ar dev2
.Op Ar dev3 Op Ar ...
.Ar prov
.Ar prov
.Op Ar prov Op Ar ...
.Nm
.Cm stop
.Op Fl fv
.Ar name
.Op Ar name2 Op Ar ...
.Op Ar name Op Ar ...
.Nm
.Cm clear
.Op Fl v
.Ar dev1
.Op Ar dev2 Op Ar ...
.Ar prov
.Op Ar prov Op Ar ...
.Nm
.Cm dump
.Ar dev1
.Op Ar dev2 Op Ar ...
.Ar prov
.Op Ar prov Op Ar ...
.Nm
.Cm list
.Op Ar name Op Ar ...
@ -142,6 +142,8 @@ Additional options:
.Bl -tag -width ".Fl s Ar stripesize"
.It Fl f
Force the removal of the specified striped device.
.It Fl h
Hardcode providers' names in metadata.
.It Fl s Ar stripesize
Specifies size of stripe block.
.It Fl v

10
sys/geom/concat/g_concat.c
View File

@ -567,6 +567,15 @@ g_concat_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
pp->name);
return (NULL);
}
/*
* Backward compatibility:
* There was no md_provider field in earlier versions of metadata.
*/
if (md.md_version < 3)
bzero(md.md_provider, sizeof(md.md_provider));
if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0)
return (NULL);
/*
* Let's check if device already exists.
@ -650,6 +659,7 @@ g_concat_ctl_create(struct gctl_req *req, struct g_class *mp)
md.md_id = arc4random();
md.md_no = 0;
md.md_all = *nargs - 1;
bzero(md.md_provider, sizeof(md.md_provider));
/* Check all providers are valid */
for (no = 1; no < *nargs; no++) {

11
sys/geom/concat/g_concat.h
View File

@ -34,7 +34,13 @@
#define G_CONCAT_CLASS_NAME "CONCAT"
#define G_CONCAT_MAGIC "GEOM::CONCAT"
#define G_CONCAT_VERSION 2
/*
* Version history:
* 1 - Initial version number.
* 2 - Added 'stop' command to gconcat(8).
* 3 - Added md_provider field to metadata and '-h' option to gconcat(8).
*/
#define G_CONCAT_VERSION 3
#ifdef _KERNEL
#define G_CONCAT_TYPE_MANUAL 0
@ -86,6 +92,7 @@ struct g_concat_metadata {
uint32_t md_id; /* Unique ID. */
uint16_t md_no; /* Disk number. */
uint16_t md_all; /* Number of all disks. */
char md_provider[16]; /* Hardcoded provider. */
};
static __inline void
concat_metadata_encode(const struct g_concat_metadata *md, u_char *data)
@ -97,6 +104,7 @@ concat_metadata_encode(const struct g_concat_metadata *md, u_char *data)
le32enc(data + 36, md->md_id);
le16enc(data + 40, md->md_no);
le16enc(data + 42, md->md_all);
bcopy(md->md_provider, data + 44, sizeof(md->md_provider));
}
static __inline void
concat_metadata_decode(const u_char *data, struct g_concat_metadata *md)
@ -108,5 +116,6 @@ concat_metadata_decode(const u_char *data, struct g_concat_metadata *md)
md->md_id = le32dec(data + 36);
md->md_no = le16dec(data + 40);
md->md_all = le16dec(data + 42);
bcopy(data + 44, md->md_provider, sizeof(md->md_provider));
}
#endif /* _G_CONCAT_H_ */

10
sys/geom/mirror/g_mirror.c
View File

@ -382,6 +382,8 @@ g_mirror_init_disk(struct g_mirror_softc *sc, struct g_provider *pp,
disk->d_delay.frac = 0;
binuptime(&disk->d_last_used);
disk->d_flags = md->md_dflags;
if (md->md_provider[0] != '\0')
disk->d_flags |= G_MIRROR_DISK_FLAG_HARDCODED;
disk->d_sync.ds_consumer = NULL;
disk->d_sync.ds_offset = md->md_sync_offset;
disk->d_sync.ds_offset_done = md->md_sync_offset;
@ -621,6 +623,7 @@ g_mirror_fill_metadata(struct g_mirror_softc *sc, struct g_mirror_disk *disk,
md->md_mediasize = sc->sc_mediasize;
md->md_sectorsize = sc->sc_sectorsize;
md->md_mflags = (sc->sc_flags & G_MIRROR_DEVICE_FLAG_MASK);
bzero(md->md_provider, sizeof(md->md_provider));
if (disk == NULL) {
md->md_did = arc4random();
md->md_priority = 0;
@ -636,6 +639,11 @@ g_mirror_fill_metadata(struct g_mirror_softc *sc, struct g_mirror_disk *disk,
md->md_sync_offset = disk->d_sync.ds_offset_done;
else
md->md_sync_offset = 0;
if ((disk->d_flags & G_MIRROR_DISK_FLAG_HARDCODED) != 0) {
strlcpy(md->md_provider,
disk->d_consumer->provider->name,
sizeof(md->md_provider));
}
}
}
@ -2491,6 +2499,8 @@ g_mirror_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
pp->name);
return (NULL);
}
if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0)
return (NULL);
if ((md.md_dflags & G_MIRROR_DISK_FLAG_INACTIVE) != 0) {
G_MIRROR_DEBUG(0,
"Device %s: provider %s marked as inactive, skipping.",

15
sys/geom/mirror/g_mirror.h
View File

@ -49,6 +49,7 @@
#define G_MIRROR_DISK_FLAG_SYNCHRONIZING 0x0000000000000002ULL
#define G_MIRROR_DISK_FLAG_FORCE_SYNC 0x0000000000000004ULL
#define G_MIRROR_DISK_FLAG_INACTIVE 0x0000000000000008ULL
#define G_MIRROR_DISK_FLAG_HARDCODED 0x0000000000000010ULL
#define G_MIRROR_DISK_FLAG_MASK (G_MIRROR_DISK_FLAG_DIRTY | \
G_MIRROR_DISK_FLAG_SYNCHRONIZING | \
G_MIRROR_DISK_FLAG_FORCE_SYNC | \
@ -210,6 +211,7 @@ struct g_mirror_metadata {
uint64_t md_sync_offset; /* Synchronized offset. */
uint64_t md_mflags; /* Additional mirror flags. */
uint64_t md_dflags; /* Additional disk flags. */
char md_provider[16]; /* Hardcoded provider. */
u_char md_hash[16]; /* MD5 hash. */
};
static __inline void
@ -232,10 +234,11 @@ mirror_metadata_encode(struct g_mirror_metadata *md, u_char *data)
le64enc(data + 67, md->md_sync_offset);
le64enc(data + 75, md->md_mflags);
le64enc(data + 83, md->md_dflags);
bcopy(md->md_provider, data + 91, 16);
MD5Init(&ctx);
MD5Update(&ctx, data, 91);
MD5Update(&ctx, data, 107);
MD5Final(md->md_hash, &ctx);
bcopy(md->md_hash, data + 91, 16);
bcopy(md->md_hash, data + 107, 16);
}
static __inline int
mirror_metadata_decode(const u_char *data, struct g_mirror_metadata *md)
@ -257,11 +260,12 @@ mirror_metadata_decode(const u_char *data, struct g_mirror_metadata *md)
md->md_sync_offset = le64dec(data + 67);
md->md_mflags = le64dec(data + 75);
md->md_dflags = le64dec(data + 83);
bcopy(data + 91, md->md_hash, 16);
bcopy(data + 91, md->md_provider, 16);
bcopy(data + 107, md->md_hash, 16);
MD5Init(&ctx);
MD5Update(&ctx, data, 91);
MD5Update(&ctx, data, 107);
MD5Final(md->md_hash, &ctx);
if (bcmp(md->md_hash, data + 91, 16) != 0)
if (bcmp(md->md_hash, data + 107, 16) != 0)
return (EINVAL);
return (0);
}
@ -345,6 +349,7 @@ mirror_metadata_dump(const struct g_mirror_metadata *md)
printf(" INACTIVE");
}
printf("\n");
printf("hcprovider: %s\n", md->md_provider);
bzero(hash, sizeof(hash));
for (i = 0; i < 16; i++) {
hash[i * 2] = hex[md->md_hash[i] >> 4];

10
sys/geom/stripe/g_stripe.c
View File

@ -898,6 +898,15 @@ g_stripe_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
pp->name);
return (NULL);
}
/*
* Backward compatibility:
* There was no md_provider field in earlier versions of metadata.
*/
if (md.md_version < 2)
bzero(md.md_provider, sizeof(md.md_provider));
if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0)
return (NULL);
/*
* Let's check if device already exists.
@ -988,6 +997,7 @@ g_stripe_ctl_create(struct gctl_req *req, struct g_class *mp)
return;
}
md.md_stripesize = *stripesize;
bzero(md.md_provider, sizeof(md.md_provider));
/* Check all providers are valid */
for (no = 1; no < *nargs; no++) {

11
sys/geom/stripe/g_stripe.h
View File

@ -34,7 +34,13 @@
#define G_STRIPE_CLASS_NAME "STRIPE"
#define G_STRIPE_MAGIC "GEOM::STRIPE"
#define G_STRIPE_VERSION 1
/*
* Version history:
* 0 - Initial version number.
* 1 - Added 'stop' command for gstripe(8).
* 2 - Added md_provider field to metadata and '-h' option for gstripe(8).
*/
#define G_STRIPE_VERSION 2
#ifdef _KERNEL
#define G_STRIPE_TYPE_MANUAL 0
@ -81,6 +87,7 @@ struct g_stripe_metadata {
uint16_t md_no; /* Disk number. */
uint16_t md_all; /* Number of all disks. */
uint32_t md_stripesize; /* Stripe size. */
char md_provider[16]; /* Hardcoded provider. */
};
static __inline void
stripe_metadata_encode(const struct g_stripe_metadata *md, u_char *data)
@ -93,6 +100,7 @@ stripe_metadata_encode(const struct g_stripe_metadata *md, u_char *data)
le16enc(data + 40, md->md_no);
le16enc(data + 42, md->md_all);
le32enc(data + 44, md->md_stripesize);
bcopy(md->md_provider, data + 48, sizeof(md->md_provider));
}
static __inline void
stripe_metadata_decode(const u_char *data, struct g_stripe_metadata *md)
@ -105,6 +113,7 @@ stripe_metadata_decode(const u_char *data, struct g_stripe_metadata *md)
md->md_no = le16dec(data + 40);
md->md_all = le16dec(data + 42);
md->md_stripesize = le32dec(data + 44);
bcopy(data + 48, md->md_provider, sizeof(md->md_provider));
}
#ifndef BITCOUNT