It's always pleasant to see how fast new features appear in Ceph. :)

Here is a non-exhaustive list of some of theme on the latest releases :

Kraken (October 2016)

• BlueStore declared as stable
• AsyncMessenger
• RGW : metadata indexing via Elasticseasrch, index resharding, compression
• S3 bucket lifecycle API, RGW Export NFS version 3 …

Occasionally it may be useful to check the version of the OSD on the entire cluster :

ceph tell osd.* version

osd.0: {
    "version": "ceph version 0.94.5-224-g4051bc2 (4051bc2a5e4313ac0f6236d7a34ed5fb4a1d9ea2)"
}
osd.1: {
    "version": "ceph version 0.94.5-224-g4051bc2 (4051bc2a5e4313ac0f6236d7a34ed5fb4a1d9ea2)"
}
osd.2: {
    "version": "ceph version 0.94.5-224-g4051bc2 (4051bc2a5e4313ac0f6236d7a34ed5fb4a1d9ea2)"
}
osd.3: {
    "version …

Of course, the simplest way is using the command ceph osd tree.

Note that, if an osd is down, you can see "last address" in ceph health detail :

$ ceph health detail
...
osd.37 is down since epoch 16952, last address 172.16.4.68:6804/628

Also, you can use …

FYI, the first RBD support has been added to LXC commands.

Example :

# Install LXC 2.0.0 (ubuntu) :
$ add-apt-repository ppa:ubuntu-lxc/lxc-stable
$ apt-get update
$ apt-get install lxc

# Add a ceph pool for lxc bloc devices :
$ ceph osd pool create lxc 64 64

# To create the container, you only need to …

After numerous problems encountered with the P20 firmware on this card model, here are the steps I followed to flash in P19 Version.

Since, no more problems :)

The model of the card is a LSI 9207-8i (SAS2308 controler) with IT FW:

lspci | grep LSI
01:00.0 Serial Attached SCSI …