Martchus
/
mdadm
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

imsm: Update-subarray for write-intent bitmap 

The patch updates the current bitmap functionality to handle adding
the bitmap on existing volumes.

Signed-off-by: Jakub Radtke <jakub.radtke@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
This commit is contained in:
Jakub Radtke 2021-01-15 00:46:59 -05:00 committed by Jes Sorensen
parent dc95f821ec
commit 19ad203ecb
1 changed files with 17 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
super-intel.c
View File

@ -7772,6 +7772,19 @@ static int kill_subarray_imsm(struct supertype *st, char *subarray_id)
return 0;
}
static int get_rwh_policy_from_update(char *update)
{
if (strcmp(update, "ppl") == 0)
return RWH_MULTIPLE_DISTRIBUTED;
else if (strcmp(update, "no-ppl") == 0)
return RWH_MULTIPLE_OFF;
else if (strcmp(update, "bitmap") == 0)
return RWH_BITMAP;
else if (strcmp(update, "no-bitmap") == 0)
return RWH_OFF;
return -1;
}
static int update_subarray_imsm(struct supertype *st, char *subarray,
char *update, struct mddev_ident *ident)
{
@ -7818,8 +7831,7 @@ static int update_subarray_imsm(struct supertype *st, char *subarray,
}
super->updates_pending++;
}
} else if (strcmp(update, "ppl") == 0 ||
strcmp(update, "no-ppl") == 0) {
} else if (get_rwh_policy_from_update(update) != -1) {
int new_policy;
char *ep;
int vol = strtoul(subarray, &ep, 10);
@ -7827,10 +7839,7 @@ static int update_subarray_imsm(struct supertype *st, char *subarray,
if (*ep != '\0' || vol >= super->anchor->num_raid_devs)
return 2;
if (strcmp(update, "ppl") == 0)
new_policy = RWH_MULTIPLE_DISTRIBUTED;
else
new_policy = RWH_MULTIPLE_OFF;
new_policy = get_rwh_policy_from_update(update);
if (st->update_tail) {
struct imsm_update_rwh_policy *u = xmalloc(sizeof(*u));
@ -7846,6 +7855,8 @@ static int update_subarray_imsm(struct supertype *st, char *subarray,
dev->rwh_policy = new_policy;
super->updates_pending++;
}
if (new_policy == RWH_BITMAP)
return write_init_bitmap_imsm_vol(st, vol);
} else
return 2;