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Support --update=homehost to allow updating of homehost information. 

Signed-off-by: Neil Brown <neilb@suse.de>
This commit is contained in:
Neil Brown 2006-05-23 05:16:32 +00:00
parent c4f12c1340
commit 0237e0cafd
4 changed files with 29 additions and 0 deletions
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9
mdadm.8
View File

@ -651,6 +651,7 @@ argument given to this flag can be one of
.BR summaries ,
.BR uuid ,
.BR name ,
.BR homehost ,
.BR resync ,
.BR byteorder ,
or
@ -689,6 +690,14 @@ option will change the
of the array as stored in the superblock. This is only supported for
version-1 superblocks.
The
.B homehost
option will change the
.I homehost
as recorded in the superblock. For version-0 superblocks, this is the
same as updating the UUID.
For version-1 superblocks, this involves updating the name.
The
.B resync
option will cause the array to be marked

2
mdadm.c
View File

@ -568,6 +568,8 @@ int main(int argc, char *argv[])
continue;
if (strcmp(update, "name")==0)
continue;
if (strcmp(update, "homehost")==0)
continue;
if (strcmp(update, "byteorder")==0) {
if (ss) {
fprintf(stderr, Name ": must not set metadata type with --update=byteorder.\n");

7
super0.c
View File

@ -442,6 +442,13 @@ static int update_super0(struct mdinfo *info, void *sbv, char *update,
sb->state &= ~(1<<MD_SB_CLEAN);
sb->recovery_cp = 0;
}
if (strcmp(update, "homehost") == 0 &&
homehost) {
uuid_set = 0;
update = "uuid";
info->uuid[0] = sb->set_uuid0;
info->uuid[1] = sb->set_uuid1;
}
if (strcmp(update, "uuid") == 0) {
if (!uuid_set && homehost) {
unsigned char *hash = SHA1((unsigned char*)homehost,

11
super1.c
View File

@ -496,6 +496,17 @@ static int update_super1(struct mdinfo *info, void *sbv, char *update,
memcpy(bm->uuid, info->uuid, 16);
}
}
if (strcmp(update, "homehost") == 0 &&
homehost) {
char *c;
update = "name";
c = strchr(sb->set_name, ':');
if (c)
strncpy(info->name, c+1, 31 - (c-sb->set_name));
else
strncpy(info->name, sb->set_name, 32);
info->name[33] = 0;
}
if (strcmp(update, "name") == 0) {
if (info->name[0] == 0)
sprintf(info->name, "%d", info->array.md_minor);