Ceph » bluestore

2022-08-23T08:31:12.523+0000 7f1c70a5e200  1 bdev(0x55a800411000 /var/lib/ceph/osd/ceph-252//block) open size 1999839952896 (0x1d19fc00000, 1.8 TiB) block_size 4096 (4 KiB) rotational discard not supported

It is coming from:

dout(1) << __func__
      << " size " << size
      << " (0x" << std::hex << size << std::dec << ", " 
      << byte_u_t(size) << ")" 
      << " block_size " << block_size
      << " (" << byte_u_t(block_size) << ")" 
      << " " << (rotational ? "rotational" : "non-rotational")
      << " discard " << (support_discard ? "supported" : "not supported")
      << dendl;