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super-show: show more cache-related information

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Only show nbuckets and nr_this_dev on cache devices;
explain nbuckets' relation to device size by printing
both total_sectors (superblock included) and
cache_sectors (superblock excluded).
This commit is contained in:
Gabriel 2013-05-01 17:12:57 +02:00
parent 9cbe774be2
commit 19d17f5b91
1 changed files with 12 additions and 11 deletions
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23
bcache-super-show.c
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@ -121,21 +121,22 @@ int main(int argc, char **argv)
printf("dev.uuid\t\t%s\n", uuid);
printf("dev.sectors_per_block\t%u\n"
"dev.sectors_per_bucket\t%u\n"
"dev.bucket_count\t%ju\n"
"dev.cache_count\t\t%u\n", // expect SB_IS_BDEV(&sb) ? 0 : 1
"dev.sectors_per_bucket\t%u\n",
sb.block_size,
sb.bucket_size,
sb.nbuckets,
sb.nr_this_dev);
sb.bucket_size);
if (!SB_IS_BDEV(&sb)) {
printf("dev.cache.first_bucket\t%u\n"
"dev.cache.first_sector\t%u\n"
"dev.cache.discard\t%s\n",
sb.first_bucket,
// total_sectors includes the superblock;
printf("dev.cache.first_sector\t%u\n"
"dev.cache.cache_sectors\t%ju\n"
"dev.cache.total_sectors\t%ju\n"
"dev.cache.discard\t%s\n"
"dev.cache.pos\t\t%u\n",
sb.bucket_size * sb.first_bucket,
CACHE_DISCARD(&sb) ? "yes" : "no");
sb.bucket_size * (sb.nbuckets - sb.first_bucket),
sb.bucket_size * sb.nbuckets,
CACHE_DISCARD(&sb) ? "yes" : "no",
sb.nr_this_dev);
} else if (sb.version == BCACHE_SB_VERSION_BDEV) {
printf("dev.data.first_sector\t%u\n"
"dev.data.writeback\t%s\n",