d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add alias support to gpart.

Browse Source 
When we're creating new providers for each of the partitions, add
aliases to the geom before we create the provider so when geom_dev
tastes the provider, the aliases are in place so the proper /dev
entries are created. So foo5p6 gets created as an alias for bar5p6
when foo is an alias for bar in the geom we're partitioning with
g_part. This also copies aliases from the container geom (eg disk) to
the label geom (the disk with GPT partitioning) so that aliases nest
properly.

Differential Revision: https://reviews.freebsd.org/D11873
This commit is contained in:
Warner Losh 2017-08-07 21:12:33 +00:00
parent c624eb2598
commit 5d7d13290a
1 changed files with 18 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
sys/geom/part/g_part.c
View File

@ -429,6 +429,7 @@ g_part_new_provider(struct g_geom *gp, struct g_part_table *table,
struct g_consumer *cp;
struct g_provider *pp;
struct sbuf *sb;
struct g_geom_alias *gap;
off_t offset;
cp = LIST_FIRST(&gp->consumer);
@ -439,6 +440,19 @@ g_part_new_provider(struct g_geom *gp, struct g_part_table *table,
entry->gpe_offset = offset;
if (entry->gpe_pp == NULL) {
/*
* Add aliases to the geom before we create the provider so that
* geom_dev can taste it with all the aliases in place so all
* the aliased dev_t instances get created for each partition
* (eg foo5p7 gets created for bar5p7 when foo is an alias of bar).
*/
LIST_FOREACH(gap, &table->gpt_gp->aliases, ga_next) {
sb = sbuf_new_auto();
G_PART_FULLNAME(table, entry, sb, gap->ga_alias);
sbuf_finish(sb);
g_geom_add_alias(gp, sbuf_data(sb));
sbuf_delete(sb);
}
sb = sbuf_new_auto();
G_PART_FULLNAME(table, entry, sb, gp->name);
sbuf_finish(sb);
@ -1901,6 +1915,7 @@ g_part_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
struct g_part_entry *entry;
struct g_part_table *table;
struct root_hold_token *rht;
struct g_geom_alias *gap;
int attr, depth;
int error;
@ -1913,10 +1928,12 @@ g_part_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
/*
* Create a GEOM with consumer and hook it up to the provider.
* With that we become part of the topology. Optain read access
* With that we become part of the topology. Obtain read access
* to the provider.
*/
gp = g_new_geomf(mp, "%s", pp->name);
LIST_FOREACH(gap, &pp->geom->aliases, ga_next)
g_geom_add_alias(gp, gap->ga_alias);
cp = g_new_consumer(gp);
cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE;
error = g_attach(cp, pp);