January 2016 11:48
To: Robert LeBlanc
Cc: ceph-users@lists.ceph.com; Nick Fisk
Subject: Re: [ceph-users] Ceph cache tier and rbd volumes/SSD primary, HDD
replica crush rule!
What are the recommanded specs of a SSD for journaling. It's a little bit
tricky now to move the journals for spi
case of mechanical drive this is a problem!
> >
> > And thank you for clearing this things out for me.
> >
> > 2016-01-12 18:03 GMT+02:00 Nick Fisk :
> >>
> >> > -Original Message-
> >> > From: Mihai Gheorghe [mailto:mcaps...@gmail.
age-
>> > > From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf
>> > Of
>> > > Mihai Gheorghe
>> > > Sent: 12 January 2016 14:56
>> > > To: Nick Fisk ; ceph-users@lists.ceph.com
>> > > Subject: Re: [ceph-users] Ceph cache
Le 12/01/2016 18:27, Mihai Gheorghe a écrit :
> One more question. Seeing that cache tier holds data on it untill it
> reaches % ratio, i suppose i must set replication to 2 or higher on
> the cache pool to not lose hot data not writen to the cold storage in
> case of a drive failure, right?
>
> A
-users@lists.ceph.com
Subject: Re: [ceph-users] Ceph cache tier and rbd volumes/SSD primary, HDD
replica crush rule!
One more question. Seeing that cache tier holds data on it untill it reaches %
ratio, i suppose i must set replication to 2 or higher on the cache pool to not
lose hot data not
From: Mihai Gheorghe [mailto:mcaps...@gmail.com]
> > Sent: 12 January 2016 15:42
> > To: Nick Fisk ; ceph-users@lists.ceph.com
> > Subject: Re: [ceph-users] Ceph cache tier and rbd volumes/SSD primary,
> HDD
> > replica crush rule!
> >
> >
> > 2016-01-1
> -Original Message-
> From: Mihai Gheorghe [mailto:mcaps...@gmail.com]
> Sent: 12 January 2016 15:42
> To: Nick Fisk ; ceph-users@lists.ceph.com
> Subject: Re: [ceph-users] Ceph cache tier and rbd volumes/SSD primary, HDD
> replica crush rule!
>
>
> 2016-01-1
cache tier to the pool that holds the
volume and i can see chaotic behavoiur from my W2012 instance, as in
deleting files takes a very long time and not all subdirectories work (i
get an error of not finding that directory with many small files)
> >
> > 2016-01-12 16:30 GMT
> -Original Message-
> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of
> Mihai Gheorghe
> Sent: 12 January 2016 14:56
> To: Nick Fisk ; ceph-users@lists.ceph.com
> Subject: Re: [ceph-users] Ceph cache tier and rbd volumes/SSD primary, HDD
&g
ph-users@lists.ceph.com
> > Subject: [ceph-users] Ceph cache tier and rbd volumes/SSD primary, HDD
> > replica crush rule!
> >
> > Hello,
> >
> > I have a question about how cache tier works with rbd volumes!?
> >
> > So i created a pool of SSD
> -Original Message-
> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of
> Mihai Gheorghe
> Sent: 12 January 2016 14:25
> To: ceph-users@lists.ceph.com
> Subject: [ceph-users] Ceph cache tier and rbd volumes/SSD primary, HDD
> replica crush rul
Hello,
I have a question about how cache tier works with rbd volumes!?
So i created a pool of SSD's for cache and a pool on HDD's for cold storage
that acts as backend for cinder volumes. I create a volume in cinder from
an image and spawn an instance. The volume is created in the cache pool as
e
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