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author | Kent Overstreet <koverstreet@google.com> | 2011-04-15 13:22:09 -0700 |
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committer | Kent Overstreet <koverstreet@google.com> | 2011-04-15 13:22:09 -0700 |
commit | 1a7ae034f6f10f69cc367c8085ececae081da828 (patch) | |
tree | 887aae97ee52ba6804eb8de198f9f73ed6343473 | |
parent | 0b4b6fe2d3d668ace37f44e5a2297bb0ab51dafe (diff) | |
download | bcache-tools-1a7ae034f6f10f69cc367c8085ececae081da828.tar.gz |
New superblock fields for multiple cache devices
-rw-r--r-- | bcache.h | 5 | ||||
-rw-r--r-- | make-bcache.c | 2 |
2 files changed, 6 insertions, 1 deletions
@@ -18,8 +18,11 @@ struct cache_sb { uint64_t nbuckets; /* device size */ uint64_t btree_root; uint16_t btree_level; - uint16_t _pad[3]; + uint16_t nr_in_set; + uint16_t nr_this_dev; + uint16_t _pad[1]; uint8_t uuid[16]; + uint8_t set_uuid[16]; }; struct bucket_disk { diff --git a/make-bcache.c b/make-bcache.c index adc90ac9..b213f9e4 100644 --- a/make-bcache.c +++ b/make-bcache.c @@ -76,6 +76,7 @@ int main(int argc, char **argv) struct cache_sb sb = { .block_size = 8, .bucket_size = 0 }; uuid_generate(sb.uuid); + uuid_generate(sb.set_uuid); while ((c = getopt(argc, argv, "CBU:w:b:")) != -1) switch (c) { @@ -129,6 +130,7 @@ int main(int argc, char **argv) memcpy(sb.magic, bcache_magic, 16); sb.version = backingdev ? CACHE_BACKING_DEVICE : 0; sb.nbuckets = nblocks / sb.bucket_size; + sb.nr_in_set = 1; uuid_unparse(sb.uuid, uuid); do |