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Provide ddf support for adding a device to an active container. 

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2008-08-19 17:55:15 +10:00
parent 43dad3d6fb
commit 2cc2983d80
1 changed files with 53 additions and 6 deletions
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59
super-ddf.c
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@ -426,8 +426,9 @@ struct ddf_super {
};
};
struct disk_data disk;
void *mdupdate; /* hold metadata update */
struct vcl *vlist[0]; /* max_part in size */
} *dlist;
} *dlist, *add_list;
};
#ifndef offsetof
@ -1994,7 +1995,6 @@ static void add_to_super_ddf(struct supertype *st,
dd->major = major(stb.st_rdev);
dd->minor = minor(stb.st_rdev);
dd->devname = devname;
dd->next = ddf->dlist;
dd->fd = fd;
dd->spare = NULL;
@ -2027,8 +2027,20 @@ static void add_to_super_ddf(struct supertype *st,
pde = &ddf->phys->entries[n];
dd->pdnum = n;
n++;
ddf->phys->used_pdes = __cpu_to_be16(n);
if (st->update_tail) {
int len = (sizeof(struct phys_disk) +
sizeof(struct phys_disk_entry));
struct phys_disk *pd;
pd = malloc(len);
pd->magic = DDF_PHYS_RECORDS_MAGIC;
pd->used_pdes = __cpu_to_be16(n);
pde = &pd->entries[0];
dd->mdupdate = pd;
} else {
n++;
ddf->phys->used_pdes = __cpu_to_be16(n);
}
memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN);
pde->refnum = dd->disk.refnum;
@ -2041,8 +2053,14 @@ static void add_to_super_ddf(struct supertype *st,
memset(pde->pad, 0xff, 6);
dd->size = size >> 9;
ddf->dlist = dd;
ddf->updates_pending = 1;
if (st->update_tail) {
dd->next = ddf->add_list;
ddf->add_list = dd;
} else {
dd->next = ddf->dlist;
ddf->dlist = dd;
ddf->updates_pending = 1;
}
}
/*
@ -2161,6 +2179,21 @@ static int write_init_super_ddf(struct supertype *st)
struct ddf_super *ddf = st->sb;
int len;
if (!ddf->currentconf) {
int len = (sizeof(struct phys_disk) +
sizeof(struct phys_disk_entry));
/* adding a disk to the container. */
if (!ddf->add_list)
return 0;
append_metadata_update(st, ddf->add_list->mdupdate, len);
ddf->add_list->mdupdate = NULL;
return 0;
}
/* Newly created VD */
/* First the virtual disk. We have a slightly fake header */
len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry);
vd = malloc(len);
@ -2894,6 +2927,20 @@ static void ddf_process_update(struct supertype *st,
ddf->phys->used_pdes = __cpu_to_be16(1 +
__be16_to_cpu(ddf->phys->used_pdes));
ddf->updates_pending = 1;
if (ddf->add_list) {
struct active_array *a;
struct dl *al = ddf->add_list;
ddf->add_list = al->next;
al->next = ddf->dlist;
ddf->dlist = al;
/* As a device has been added, we should check
* for any degraded devices that might make
* use of this spare */
for (a = st->arrays ; a; a=a->next)
a->check_degraded = 1;
}
break;
case DDF_VIRT_RECORDS_MAGIC: