4 Feb
2020
4 Feb
'20
5:29 p.m.
Hi Igor,
Thanks!
I think the code needs to be corrected - the choice criteria for which
setting to use when
cct->_conf->bluestore_cache_size == 0
should be as follows:
1) See what kind of storage you have.
2) Select type-appropriate storage.
Is this code public-editable? I'll be happy to correct that.
Regards,
Boris.
On Tue, Feb 4, 2020 at 12:10 PM Igor Fedotov <ifedotov(a)suse.de> wrote:
Hi Boris,
general settings (unless they are set to zero) override disk-specific
settings .
I.e. bluestore_cache_size overrides both bluestore_cache_size_hdd and
bluestore_cache_size_ssd.
Here is the code snippet in case you know C++
if (cct->_conf->bluestore_cache_size) {
cache_size = cct->_conf->bluestore_cache_size;
} else {
// choose global cache size based on backend type
if (_use_rotational_settings()) {
cache_size = cct->_conf->bluestore_cache_size_hdd;
} else {
cache_size = cct->_conf->bluestore_cache_size_ssd;
}
}
Thanks,
Igor
On 2/4/2020 2:14 PM, Boris Epstein wrote:
Hello list,
As stated in this document:
https://docs.ceph.com/docs/master/rados/configuration/bluestore-config-ref/
there are multiple parameters defining cache limits for BlueStore. You
have
bluestore_cache_size (presumably controlling the
cache size),
bluestore_cache_size_hdd (presumably doing the same for HDD storage only)
and bluestore_cache_size_ssd (presumably being the equivalent for SSD).
My
question is, does bluestore_cache_size override
the disk-specific
parameters, or do I need to set the disk-specific (or, rather, storage
type
specific ones separately if I want to keep them
to a certain value.
Thanks in advance.
Boris.
_______________________________________________
ceph-users mailing list -- ceph-users(a)ceph.io
To unsubscribe send an email to ceph-users-leave(a)ceph.io