Re: Bluestore DB showing as ssd

[Hervé Ballans <herve.ballans@xxxxxxxxxxxxx>]

Hi,

By testing the command on my side, it gives me the right information (modulo the fact that the disk is a nvme and not ssd) :

# ceph osd metadata 1 |grep bluefs_db
    "bluefs_db_access_mode": "blk",
    "bluefs_db_block_size": "4096",
    "bluefs_db_dev": "259:3",
    "bluefs_db_dev_node": "nvme0n1",
    "bluefs_db_driver": "KernelDevice",
    "bluefs_db_model": "Dell Express Flash PM1725a 800GB SFF    ",
    "bluefs_db_partition_path": "/dev/nvme0n1p2",
    "bluefs_db_rotational": "0",
    "bluefs_db_serial": "      S39YNX0JC02801",
    "bluefs_db_size": "80016834560",
    "bluefs_db_type": "ssd",

I notice that in your case, the db_model returns the information on the PERC card and not on the disk...
Maybe this is where the missing information comes from ?

Le 22/09/2018 à 01:24, Brett Chancellor a écrit :

Hi all. Quick question about osd metadata information. I have several OSDs setup with the data dir on HDD and the db going to a partition on ssd. But when I look at the metadata for all the OSDs, it's showing the db as "hdd". Does this effect anything? And is there anyway to change it?

$ sudo ceph osd metadata 1

{

    "id": 1,

    "arch": "x86_64",

    "back_addr": "<removed>:6805/2053608",

    "back_iface": "eth0",

    "bluefs": "1",

    "bluefs_db_access_mode": "blk",

    "bluefs_db_block_size": "4096",

    "bluefs_db_dev": "8:80",

    "bluefs_db_dev_node": "sdf",

    "bluefs_db_driver": "KernelDevice",

    "bluefs_db_model": "PERC H730 Mini  ",

    "bluefs_db_partition_path": "/dev/sdf2",

    "bluefs_db_rotational": "1",

    "bluefs_db_size": "266287972352",

    "bluefs_db_type": "hdd",

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