In the scenario of assembling composite md arrays, e.g. /dev/md2 with
/dev/md1 and /dev/md0 as components, we want /dev/md2 assembly to be
delayed until the components are available. If we attempt to assemble
/dev/md2 when only /dev/md0 is available /dev/md2 will not be fully
initialized, and /dev/md1 will be assembled to an equally defunct
/dev/md3.
So teardown the early /dev/md2 on the expectation that more devices will
arrive in a later assembly pass.
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
Assemble.c | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/Assemble.c b/Assemble.c
index a72d427f4773..9a2399ef6411 100644
--- a/Assemble.c
+++ b/Assemble.c
@@ -1147,16 +1147,17 @@ static int start_array(int mdfd,
if (sparecnt)
fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
if (!enough(content->array.level, content->array.raid_disks,
- content->array.layout, 1, avail))
+ content->array.layout, 1, avail)) {
fprintf(stderr, " - not enough to start the array.\n");
- else if (!enough(content->array.level,
+ ioctl(mdfd, STOP_ARRAY, NULL);
+ } else if (!enough(content->array.level,
content->array.raid_disks,
content->array.layout, clean,
- avail))
+ avail)) {
fprintf(stderr, " - not enough to start the "
"array while not clean - consider "
"--force.\n");
- else {
+ } else {
if (req_cnt == (unsigned)content->array.raid_disks)
fprintf(stderr, " - need all %d to start it", req_cnt);
else
--
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