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os/newstore: a few comments about wal

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Signed-off-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Sage Weil 2015-04-20 12:48:38 -07:00
parent 5d8e14653d
commit e580a82729
1 changed files with 7 additions and 1 deletions
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8
src/os/newstore/NewStore.cc
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@ -2420,13 +2420,19 @@ int NewStore::_do_wal_transaction(wal_transaction_t& wt)
<< cpp_strerror(r) << dendl;
return r;
}
//sync_fds.push_back(fd); // do we care?
// note: we are not syncing this truncate. instead, we are
// careful about only reading as much of the fragment as we
// know is valid, and truncating to expected size before
// extending the file.
}
break;
case wal_op_t::OP_REMOVE:
dout(20) << __func__ << " remove " << p->fid << dendl;
_remove_fid(p->fid);
// note: we do not fsync the directory. instead, we tolerate
// leaked fragments in a crash. in practice, this will be
// exceedingly rare.
break;
default: