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Now, that we have gjournal in the tree add possibility to configure

Browse Source 
gmirror and graid3 in a way that it is not resynchronized after a
power failure or system crash.
It is safe when gjournal is running on top of gmirror/graid3.
This commit is contained in:
pjd 2006-11-01 22:51:49 +00:00
parent 3d8e2e0a6f
commit b34fb80d83
10 changed files with 137 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
sbin/geom/class/mirror/geom_mirror.c
View File

@ -67,12 +67,14 @@ struct g_command class_commands[] = {
{ 'a', "autosync", NULL, G_TYPE_BOOL },
{ 'b', "balance", configure_balance, G_TYPE_STRING },
{ 'd', "dynamic", NULL, G_TYPE_BOOL },
{ 'f', "failsync", NULL, G_TYPE_BOOL },
{ 'F', "nofailsync", NULL, G_TYPE_BOOL },
{ 'h', "hardcode", NULL, G_TYPE_BOOL },
{ 'n', "noautosync", NULL, G_TYPE_BOOL },
{ 's', "slice", &configure_slice, G_TYPE_NUMBER },
G_OPT_SENTINEL
},
"[-adhnv] [-b balance] [-s slice] name"
"[-adfFhnv] [-b balance] [-s slice] name"
},
{ "deactivate", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
"[-v] name prov ..."
@ -86,12 +88,13 @@ struct g_command class_commands[] = {
{ "label", G_FLAG_VERBOSE, mirror_main,
{
{ 'b', "balance", label_balance, G_TYPE_STRING },
{ 'F', "nofailsync", NULL, G_TYPE_BOOL },
{ 'h', "hardcode", NULL, G_TYPE_BOOL },
{ 'n', "noautosync", NULL, G_TYPE_BOOL },
{ 's', "slice", &label_slice, G_TYPE_NUMBER },
G_OPT_SENTINEL
},
"[-hnv] [-b balance] [-s slice] name prov ..."
"[-Fhnv] [-b balance] [-s slice] name prov ..."
},
{ "insert", G_FLAG_VERBOSE, NULL,
{
@ -154,7 +157,7 @@ mirror_label(struct gctl_req *req)
unsigned sectorsize;
off_t mediasize;
intmax_t val;
int error, i, nargs, bal, hardcode, noautosync;
int error, i, nargs, bal, hardcode;
nargs = gctl_get_int(req, "nargs");
if (nargs < 2) {
@ -182,9 +185,10 @@ mirror_label(struct gctl_req *req)
return;
}
md.md_balance = bal;
noautosync = gctl_get_int(req, "noautosync");
if (noautosync)
if (gctl_get_int(req, "noautosync"))
md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
if (gctl_get_int(req, "nofailsync"))
md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
hardcode = gctl_get_int(req, "hardcode");
/*

12
sbin/geom/class/mirror/gmirror.8
View File

@ -33,7 +33,7 @@
.Sh SYNOPSIS
.Nm
.Cm label
.Op Fl hnv
.Op Fl Fhnv
.Op Fl b Ar balance
.Op Fl s Ar slice
.Ar name
@ -44,7 +44,7 @@
.Ar prov ...
.Nm
.Cm configure
.Op Fl adhnv
.Op Fl adfFhnv
.Op Fl b Ar balance
.Op Fl s Ar slice
.Ar name
@ -142,6 +142,9 @@ Split read requests, which are bigger than or equal to slice size on N pieces,
where N is the number of active components.
This is the default balance algorithm.
.El
.It Fl F
Do not synchronize after a power failure or system crash.
Assumes device is in consistent state.
.It Fl h
Hardcode providers' names in metadata.
.It Fl n
@ -167,6 +170,11 @@ Turn on autosynchronization of stale components.
Specifies balance algorithm to use.
.It Fl d
Do not hardcode providers' names in metadata.
.It Fl f
Synchronize device after a power failure or system crash.
.It Fl F
Do not synchronize after a power failure or system crash.
Assumes device is in consistent state.
.It Fl h
Hardcode providers' names in metadata.
.It Fl n

15
sbin/geom/class/raid3/geom_raid3.c
View File

@ -58,6 +58,8 @@ struct g_command class_commands[] = {
{
{ 'a', "autosync", NULL, G_TYPE_BOOL },
{ 'd', "dynamic", NULL, G_TYPE_BOOL },
{ 'f', "failsync", NULL, G_TYPE_BOOL },
{ 'F', "nofailsync", NULL, G_TYPE_BOOL },
{ 'h', "hardcode", NULL, G_TYPE_BOOL },
{ 'n', "noautosync", NULL, G_TYPE_BOOL },
{ 'r', "round_robin", NULL, G_TYPE_BOOL },
@ -66,7 +68,7 @@ struct g_command class_commands[] = {
{ 'W', "noverify", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-adhnrRvwW] name"
"[-adfFhnrRvwW] name"
},
{ "dump", 0, raid3_main, G_NULL_OPTS,
"prov ..."
@ -82,12 +84,13 @@ struct g_command class_commands[] = {
{ "label", G_FLAG_VERBOSE, raid3_main,
{
{ 'h', "hardcode", NULL, G_TYPE_BOOL },
{ 'F', "nofailsync", NULL, G_TYPE_BOOL },
{ 'n', "noautosync", NULL, G_TYPE_BOOL },
{ 'r', "round_robin", NULL, G_TYPE_BOOL },
{ 'w', "verify", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-hnrvw] name prov prov prov ..."
"[-hFnrvw] name prov prov prov ..."
},
{ "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
"[-v] name prov"
@ -142,7 +145,8 @@ raid3_label(struct gctl_req *req)
const char *str;
unsigned sectorsize, ssize;
off_t mediasize, msize;
int error, i, nargs, hardcode, noautosync, round_robin, verify;
int hardcode, round_robin, verify;
int error, i, nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs < 4) {
@ -165,9 +169,10 @@ raid3_label(struct gctl_req *req)
md.md_genid = 0;
md.md_syncid = 1;
md.md_sync_offset = 0;
noautosync = gctl_get_int(req, "noautosync");
if (noautosync)
if (gctl_get_int(req, "noautosync"))
md.md_mflags |= G_RAID3_DEVICE_FLAG_NOAUTOSYNC;
if (gctl_get_int(req, "nofailsync"))
md.md_mflags |= G_RAID3_DEVICE_FLAG_NOFAILSYNC;
round_robin = gctl_get_int(req, "round_robin");
if (round_robin)
md.md_mflags |= G_RAID3_DEVICE_FLAG_ROUND_ROBIN;

12
sbin/geom/class/raid3/graid3.8
View File

@ -33,7 +33,7 @@
.Sh SYNOPSIS
.Nm
.Cm label
.Op Fl hnrvw
.Op Fl Fhnrvw
.Ar name
.Ar prov prov prov ...
.Nm
@ -42,7 +42,7 @@
.Ar prov ...
.Nm
.Cm configure
.Op Fl adhnrRvwW
.Op Fl adfFhnrRvwW
.Ar name
.Nm
.Cm rebuild
@ -97,6 +97,9 @@ The number of components must be equal to 3, 5, 9, 17, etc.\& (2^n + 1).
.Pp
Additional options include:
.Bl -tag -width ".Fl h"
.It Fl F
Do not synchronize after a power failure or system crash.
Assumes device is in consistent state.
.It Fl h
Hardcode providers' names in metadata.
.It Fl n
@ -134,6 +137,11 @@ Additional options include:
Turn on autosynchronization of stale components.
.It Fl d
Do not hardcode providers' names in metadata.
.It Fl f
Synchronize device after a power failure or system crash.
.It Fl F
Do not synchronize after a power failure or system crash.
Assumes device is in consistent state.
.It Fl h
Hardcode providers' names in metadata.
.It Fl n

8
sys/geom/mirror/g_mirror.c
View File

@ -802,6 +802,8 @@ g_mirror_idle(struct g_mirror_softc *sc, int acw)
if (sc->sc_provider == NULL)
return (0);
if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0)
return (0);
if (sc->sc_idle)
return (0);
if (sc->sc_writes > 0)
@ -831,6 +833,8 @@ g_mirror_unidle(struct g_mirror_softc *sc)
g_topology_assert_not();
sx_assert(&sc->sc_lock, SX_XLOCKED);
if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0)
return;
sc->sc_idle = 0;
sc->sc_last_write = time_uptime;
LIST_FOREACH(disk, &sc->sc_disks, d_next) {
@ -1884,6 +1888,8 @@ g_mirror_update_idle(struct g_mirror_softc *sc, struct g_mirror_disk *disk)
sx_assert(&sc->sc_lock, SX_LOCKED);
if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0)
return;
if (!sc->sc_idle && (disk->d_flags & G_MIRROR_DISK_FLAG_DIRTY) == 0) {
G_MIRROR_DEBUG(1, "Disk %s (device %s) marked as dirty.",
g_mirror_get_diskname(disk), sc->sc_name);
@ -1928,6 +1934,7 @@ g_mirror_sync_start(struct g_mirror_disk *disk)
G_MIRROR_DEBUG(0, "Device %s: rebuilding provider %s.", sc->sc_name,
g_mirror_get_diskname(disk));
if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) == 0)
disk->d_flags |= G_MIRROR_DISK_FLAG_DIRTY;
KASSERT(disk->d_sync.ds_consumer == NULL,
("Sync consumer already exists (device=%s, disk=%s).",
@ -3180,6 +3187,7 @@ g_mirror_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
sbuf_printf(sb, name); \
} \
} while (0)
ADD_FLAG(G_MIRROR_DEVICE_FLAG_NOFAILSYNC, "NOFAILSYNC");
ADD_FLAG(G_MIRROR_DEVICE_FLAG_NOAUTOSYNC, "NOAUTOSYNC");
#undef ADD_FLAG
}

14
sys/geom/mirror/g_mirror.h
View File

@ -41,8 +41,9 @@
* 1 - Added 'prefer' balance algorithm.
* 2 - Added md_genid field to metadata.
* 3 - Added md_provsize field to metadata.
* 4 - Added 'no failure synchronization' flag.
*/
#define G_MIRROR_VERSION 3
#define G_MIRROR_VERSION 4
#define G_MIRROR_BALANCE_NONE 0
#define G_MIRROR_BALANCE_ROUND_ROBIN 1
@ -64,7 +65,9 @@
G_MIRROR_DISK_FLAG_INACTIVE)
#define G_MIRROR_DEVICE_FLAG_NOAUTOSYNC 0x0000000000000001ULL
#define G_MIRROR_DEVICE_FLAG_MASK (G_MIRROR_DEVICE_FLAG_NOAUTOSYNC)
#define G_MIRROR_DEVICE_FLAG_NOFAILSYNC 0x0000000000000002ULL
#define G_MIRROR_DEVICE_FLAG_MASK (G_MIRROR_DEVICE_FLAG_NOAUTOSYNC | \
G_MIRROR_DEVICE_FLAG_NOFAILSYNC)
#ifdef _KERNEL
extern u_int g_mirror_debug;
@ -341,7 +344,7 @@ mirror_metadata_decode_v2(const u_char *data, struct g_mirror_metadata *md)
return (0);
}
static __inline int
mirror_metadata_decode_v3(const u_char *data, struct g_mirror_metadata *md)
mirror_metadata_decode_v3v4(const u_char *data, struct g_mirror_metadata *md)
{
MD5_CTX ctx;
@ -385,7 +388,8 @@ mirror_metadata_decode(const u_char *data, struct g_mirror_metadata *md)
error = mirror_metadata_decode_v2(data, md);
break;
case 3:
error = mirror_metadata_decode_v3(data, md);
case 4:
error = mirror_metadata_decode_v3v4(data, md);
break;
default:
error = EINVAL;
@ -456,6 +460,8 @@ mirror_metadata_dump(const struct g_mirror_metadata *md)
if (md->md_mflags == 0)
printf(" NONE");
else {
if ((md->md_mflags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0)
printf(" NOFAILSYNC");
if ((md->md_mflags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0)
printf(" NOAUTOSYNC");
}

32
sys/geom/mirror/g_mirror_ctl.c
View File

@ -97,7 +97,8 @@ g_mirror_ctl_configure(struct gctl_req *req, struct g_class *mp)
intmax_t *slicep;
uint32_t slice;
uint8_t balance;
int *nargs, *autosync, *noautosync, *hardcode, *dynamic, do_sync = 0;
int *autosync, *noautosync, *failsync, *nofailsync, *hardcode, *dynamic;
int *nargs, do_sync = 0, dirty = 1;
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
if (nargs == NULL) {
@ -128,6 +129,16 @@ g_mirror_ctl_configure(struct gctl_req *req, struct g_class *mp)
gctl_error(req, "No '%s' argument.", "noautosync");
return;
}
failsync = gctl_get_paraml(req, "failsync", sizeof(*failsync));
if (failsync == NULL) {
gctl_error(req, "No '%s' argument.", "failsync");
return;
}
nofailsync = gctl_get_paraml(req, "nofailsync", sizeof(*nofailsync));
if (nofailsync == NULL) {
gctl_error(req, "No '%s' argument.", "nofailsync");
return;
}
hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode));
if (hardcode == NULL) {
gctl_error(req, "No '%s' argument.", "hardcode");
@ -143,6 +154,11 @@ g_mirror_ctl_configure(struct gctl_req *req, struct g_class *mp)
"noautosync");
return;
}
if (*failsync && *nofailsync) {
gctl_error(req, "'%s' and '%s' specified.", "failsync",
"nofailsync");
return;
}
if (*hardcode && *dynamic) {
gctl_error(req, "'%s' and '%s' specified.", "hardcode",
"dynamic");
@ -180,7 +196,8 @@ g_mirror_ctl_configure(struct gctl_req *req, struct g_class *mp)
return;
}
if (sc->sc_balance == balance && sc->sc_slice == slice && !*autosync &&
!*noautosync && !*hardcode && !*dynamic) {
!*noautosync && !*failsync && !*nofailsync && !*hardcode &&
!*dynamic) {
sx_xunlock(&sc->sc_lock);
gctl_error(req, "Nothing has changed.");
return;
@ -196,6 +213,15 @@ g_mirror_ctl_configure(struct gctl_req *req, struct g_class *mp)
if (*noautosync)
sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
}
if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0) {
if (*failsync)
sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
} else {
if (*nofailsync) {
sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
dirty = 0;
}
}
LIST_FOREACH(disk, &sc->sc_disks, d_next) {
if (do_sync) {
if (disk->d_state == G_MIRROR_DISK_STATE_SYNCHRONIZING)
@ -205,6 +231,8 @@ g_mirror_ctl_configure(struct gctl_req *req, struct g_class *mp)
disk->d_flags |= G_MIRROR_DISK_FLAG_HARDCODED;
else if (*dynamic)
disk->d_flags &= ~G_MIRROR_DISK_FLAG_HARDCODED;
if (!dirty)
disk->d_flags &= ~G_MIRROR_DISK_FLAG_DIRTY;
g_mirror_update_metadata(disk);
if (do_sync) {
if (disk->d_state == G_MIRROR_DISK_STATE_STALE) {

8
sys/geom/raid3/g_raid3.c
View File

@ -861,6 +861,8 @@ g_raid3_idle(struct g_raid3_softc *sc, int acw)
if (sc->sc_provider == NULL)
return (0);
if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0)
return (0);
if (sc->sc_idle)
return (0);
if (sc->sc_writes > 0)
@ -892,6 +894,8 @@ g_raid3_unidle(struct g_raid3_softc *sc)
g_topology_assert_not();
sx_assert(&sc->sc_lock, SX_XLOCKED);
if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0)
return;
sc->sc_idle = 0;
sc->sc_last_write = time_uptime;
for (i = 0; i < sc->sc_ndisks; i++) {
@ -2154,6 +2158,8 @@ g_raid3_update_idle(struct g_raid3_softc *sc, struct g_raid3_disk *disk)
{
sx_assert(&sc->sc_lock, SX_LOCKED);
if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0)
return;
if (!sc->sc_idle && (disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) == 0) {
G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.",
g_raid3_get_diskname(disk), sc->sc_name);
@ -2206,6 +2212,7 @@ g_raid3_sync_start(struct g_raid3_softc *sc)
G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s.", sc->sc_name,
g_raid3_get_diskname(disk));
if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) == 0)
disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY;
KASSERT(disk->d_sync.ds_consumer == NULL,
("Sync consumer already exists (device=%s, disk=%s).",
@ -3481,6 +3488,7 @@ g_raid3_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
sbuf_printf(sb, name); \
} \
} while (0)
ADD_FLAG(G_RAID3_DEVICE_FLAG_NOFAILSYNC, "NOFAILSYNC");
ADD_FLAG(G_RAID3_DEVICE_FLAG_NOAUTOSYNC, "NOAUTOSYNC");
ADD_FLAG(G_RAID3_DEVICE_FLAG_ROUND_ROBIN,
"ROUND-ROBIN");

14
sys/geom/raid3/g_raid3.h
View File

@ -42,8 +42,9 @@
* 2 - Added 'verify reading' algorithm.
* 3 - Added md_genid field to metadata.
* 4 - Added md_provsize field to metadata.
* 5 - Added 'no failure synchronization' flag.
*/
#define G_RAID3_VERSION 4
#define G_RAID3_VERSION 5
#define G_RAID3_DISK_FLAG_DIRTY 0x0000000000000001ULL
#define G_RAID3_DISK_FLAG_SYNCHRONIZING 0x0000000000000002ULL
@ -57,9 +58,11 @@
#define G_RAID3_DEVICE_FLAG_NOAUTOSYNC 0x0000000000000001ULL
#define G_RAID3_DEVICE_FLAG_ROUND_ROBIN 0x0000000000000002ULL
#define G_RAID3_DEVICE_FLAG_VERIFY 0x0000000000000004ULL
#define G_RAID3_DEVICE_FLAG_NOFAILSYNC 0x0000000000000008ULL
#define G_RAID3_DEVICE_FLAG_MASK (G_RAID3_DEVICE_FLAG_NOAUTOSYNC | \
G_RAID3_DEVICE_FLAG_ROUND_ROBIN | \
G_RAID3_DEVICE_FLAG_VERIFY)
G_RAID3_DEVICE_FLAG_VERIFY | \
G_RAID3_DEVICE_FLAG_NOFAILSYNC)
#ifdef _KERNEL
extern u_int g_raid3_debug;
@ -363,7 +366,7 @@ raid3_metadata_decode_v3(const u_char *data, struct g_raid3_metadata *md)
return (0);
}
static __inline int
raid3_metadata_decode_v4(const u_char *data, struct g_raid3_metadata *md)
raid3_metadata_decode_v4v5(const u_char *data, struct g_raid3_metadata *md)
{
MD5_CTX ctx;
@ -405,7 +408,8 @@ raid3_metadata_decode(const u_char *data, struct g_raid3_metadata *md)
error = raid3_metadata_decode_v3(data, md);
break;
case 4:
error = raid3_metadata_decode_v4(data, md);
case 5:
error = raid3_metadata_decode_v4v5(data, md);
break;
default:
error = EINVAL;
@ -442,6 +446,8 @@ raid3_metadata_dump(const struct g_raid3_metadata *md)
printf(" ROUND-ROBIN");
if ((md->md_mflags & G_RAID3_DEVICE_FLAG_VERIFY) != 0)
printf(" VERIFY");
if ((md->md_mflags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0)
printf(" NOFAILSYNC");
}
printf("\n");
printf(" dflags:");

33
sys/geom/raid3/g_raid3_ctl.c
View File

@ -98,8 +98,9 @@ g_raid3_ctl_configure(struct gctl_req *req, struct g_class *mp)
struct g_raid3_softc *sc;
struct g_raid3_disk *disk;
const char *name;
int *nargs, do_sync = 0;
int *nargs, do_sync = 0, dirty = 1;
int *autosync, *noautosync;
int *failsync, *nofailsync;
int *round_robin, *noround_robin;
int *verify, *noverify;
u_int n;
@ -128,6 +129,21 @@ g_raid3_ctl_configure(struct gctl_req *req, struct g_class *mp)
"noautosync");
return;
}
failsync = gctl_get_paraml(req, "failsync", sizeof(*failsync));
if (failsync == NULL) {
gctl_error(req, "No '%s' argument.", "failsync");
return;
}
nofailsync = gctl_get_paraml(req, "nofailsync", sizeof(*nofailsync));
if (nofailsync == NULL) {
gctl_error(req, "No '%s' argument.", "nofailsync");
return;
}
if (*failsync && *nofailsync) {
gctl_error(req, "'%s' and '%s' specified.", "failsync",
"nofailsync");
return;
}
round_robin = gctl_get_paraml(req, "round_robin", sizeof(*round_robin));
if (round_robin == NULL) {
gctl_error(req, "No '%s' argument.", "round_robin");
@ -159,8 +175,8 @@ g_raid3_ctl_configure(struct gctl_req *req, struct g_class *mp)
"noverify");
return;
}
if (!*autosync && !*noautosync && !*round_robin && !*noround_robin &&
!*verify && !*noverify) {
if (!*autosync && !*noautosync && !*failsync && !*nofailsync &&
!*round_robin && !*noround_robin && !*verify && !*noverify) {
gctl_error(req, "Nothing has changed.");
return;
}
@ -188,6 +204,15 @@ g_raid3_ctl_configure(struct gctl_req *req, struct g_class *mp)
if (*noautosync)
sc->sc_flags |= G_RAID3_DEVICE_FLAG_NOAUTOSYNC;
}
if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0) {
if (*failsync)
sc->sc_flags &= ~G_RAID3_DEVICE_FLAG_NOFAILSYNC;
} else {
if (*nofailsync) {
sc->sc_flags |= G_RAID3_DEVICE_FLAG_NOFAILSYNC;
dirty = 0;
}
}
if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_VERIFY) != 0) {
if (*noverify)
sc->sc_flags &= ~G_RAID3_DEVICE_FLAG_VERIFY;
@ -215,6 +240,8 @@ g_raid3_ctl_configure(struct gctl_req *req, struct g_class *mp)
if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING)
disk->d_flags &= ~G_RAID3_DISK_FLAG_FORCE_SYNC;
}
if (!dirty)
disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY;
g_raid3_update_metadata(disk);
if (do_sync) {
if (disk->d_state == G_RAID3_DISK_STATE_STALE) {