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Convert a bitmap=none device to clustered 

This adds the ability to convert a regular md without bitmap
(--bitmap=none) to a clustered device (--bitmap=clustered).

To convert a device with --bitmap=internal or --bitmap=external,
you have to convert to --bitmap=none and then re-execute the
command with --bitmap=clustered.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Guoqing Jiang 2015-06-10 13:42:09 +08:00 committed by NeilBrown
parent 4de9091302
commit 7c25f4d706
1 changed files with 7 additions and 3 deletions
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10
Grow.c
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@ -330,8 +330,7 @@ int Grow_addbitmap(char *devname, int fd, struct context *c, struct shape *s)
}
return 0;
}
pr_err("Internal bitmap already present on %s\n",
devname);
pr_err("%s bitmap already present on %s\n", s->bitmap_file, devname);
return 1;
}
@ -375,7 +374,8 @@ int Grow_addbitmap(char *devname, int fd, struct context *c, struct shape *s)
free(st);
return 1;
}
if (strcmp(s->bitmap_file, "internal") == 0) {
if (strcmp(s->bitmap_file, "internal") == 0 ||
strcmp(s->bitmap_file, "clustered") == 0) {
int rv;
int d;
int offset_setable = 0;
@ -384,6 +384,8 @@ int Grow_addbitmap(char *devname, int fd, struct context *c, struct shape *s)
pr_err("Internal bitmaps not supported with %s metadata\n", st->ss->name);
return 1;
}
st->nodes = c->nodes;
st->cluster_name = c->homecluster;
mdi = sysfs_read(fd, NULL, GET_BITMAP_LOCATION);
if (mdi)
offset_setable = 1;
@ -426,6 +428,8 @@ int Grow_addbitmap(char *devname, int fd, struct context *c, struct shape *s)
rv = sysfs_set_num_signed(mdi, NULL, "bitmap/location",
mdi->bitmap_offset);
} else {
if (strcmp(s->bitmap_file, "clustered") == 0)
array.state |= (1<<MD_SB_CLUSTERED);
array.state |= (1<<MD_SB_BITMAP_PRESENT);
rv = ioctl(fd, SET_ARRAY_INFO, &array);
}