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os/bluestore: include bluefs space in statfs result

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We were counting all (free) space allocated to bluefs as used.  Instead,
query bluefs to find out what is used and what is free.

Signed-off-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Sage Weil 2016-08-21 18:33:47 -05:00
parent 549812338e
commit b97f3d6761
1 changed files with 12 additions and 7 deletions
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19
src/os/bluestore/BlueStore.cc
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@ -3388,15 +3388,20 @@ void BlueStore::_sync()
int BlueStore::statfs(struct store_statfs_t *buf)
{
uint64_t bluefs_len = 0;
for (interval_set<uint64_t>::iterator p = bluefs_extents.begin();
p != bluefs_extents.end(); p++)
bluefs_len += p.get_len();
buf->reset();
buf->total = bdev->get_size();
assert(alloc->get_free() >= bluefs_len);
buf->available = (alloc->get_free() - bluefs_len);
buf->available = alloc->get_free();
if (bluefs) {
// part of our shared device is "free" accordingly to BlueFS
buf->available += bluefs->get_free(bluefs_shared_bdev);
// include dedicated db, too, if that isn't the shared device.
if (bluefs_shared_bdev != BlueFS::BDEV_DB) {
buf->available += bluefs->get_free(BlueFS::BDEV_DB);
buf->total += bluefs->get_total(BlueFS::BDEV_DB);
}
}
bufferlist bl;
int r = db->get(PREFIX_STAT, "bluestore_statfs", &bl);