: vrijdag 20 juli 2018 13:00
To: Eugen Block
Cc: ceph-users@lists.ceph.com
Subject: Re: [ceph-users] Converting to BlueStore, and external journal
devices
What is the use of LVM in blurstore, I have seen people using LVM but
don't know why ?
Sent from my iPhone
> On Jul 19, 2018, at 10:00 A
What is the use of LVM in blurstore, I have seen people using LVM but don't
know why ?
Sent from my iPhone
> On Jul 19, 2018, at 10:00 AM, Eugen Block wrote:
>
> Hi,
>
> if you have SSDs for RocksDB, you should provide that in the command
> (--block.db $DEV), otherwise Ceph will use the one
Sounds like the typical configuration is just RocksDB on the
SSD, and both data and WAL on the OSD disk?
Not quite, WAL will be on the fastest available device. If you have
NVMe, SSD and HDD, your command should look something like this:
ceph-volume lvm create --bluestore --data /dev/$HDD --
Thank you. Sounds like the typical configuration is just RocksDB on the
SSD, and both data and WAL on the OSD disk?
On Thu, Jul 19, 2018 at 9:00 AM, Eugen Block wrote:
> Hi,
>
> if you have SSDs for RocksDB, you should provide that in the command
> (--block.db $DEV), otherwise Ceph will use th
Hi,
if you have SSDs for RocksDB, you should provide that in the command
(--block.db $DEV), otherwise Ceph will use the one provided disk for
all data and RocksDB/WAL.
Before you create that OSD you probably should check out the help page
for that command, maybe there are more options you s
I am following the steps here:
http://docs.ceph.com/docs/mimic/rados/operations/bluestore-migration/
The final step is:
ceph-volume lvm create --bluestore --data $DEVICE --osd-id $ID
I notice this command doesn't specify a device to use as the journal. Is
it implied that BlueStore will use
