[ceph-users] ext4 external journal - anyone tried this?

2015-05-02 Thread Matthew Monaco
It looks like you can get a pretty good performance benefit from using ext4 with an "external" SSD journal. Has anyone tried this with ceph? Take, for example, a system with a 3:1 HDD to SSD ratio. What are some of your thoughts? 3 ceph journal partitions + 3 ext4 journal partitions per SSD for th

Re: [ceph-users] ext4 external journal - anyone tried this?

2015-05-02 Thread Matthew Monaco
On 05/02/2015 02:53 AM, Matthew Monaco wrote: > It looks like you can get a pretty good performance benefit from using ext4 > with > an "external" SSD journal. Has anyone tried this with ceph? Take, for > example, a > system with a 3:1 HDD to SSD ratio. What are some of your thoughts? > > 3 ceph

[ceph-users] Experience going through rebalancing with active VMs / questions

2015-05-02 Thread Lionel Bouton
Hi, we are currently running the latest firefly (0.80.9) and we have difficulties maintaining good throughput when Ceph is backfilling/recovering and/or deep-scrubing after an outage. This got to the point where when the VM using rbd start misbehaving (load rising, some simple SQL update queries t

Re: [ceph-users] Civet RadosGW S3 not storing complete obects; civetweb logs stop after rotation

2015-05-02 Thread Yehuda Sadeh-Weinraub
- Original Message - > From: "Sean" > To: "Yehuda Sadeh-Weinraub" > Cc: ceph-users@lists.ceph.com > Sent: Friday, May 1, 2015 6:47:09 PM > Subject: Re: [ceph-users] Civet RadosGW S3 not storing complete obects; > civetweb logs stop after rotation > > Hey there, > > Sorry for the dela