[ceph-users] Radosgw admin ops API command question

ser1 http://docs.ceph.com/docs/master/radosgw/adminops/ Regards, Horace Ng ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

Re: [ceph-users] Ceph + VMware + Single Thread Performance

Hi, Same here, I've read some blog saying that vmware will frequently verify the locking on VMFS over iSCSI, hence it will have much slower performance than NFS (with different locking mechanism). Regards, Horace Ng - Original Message - From: w...@globe.de To: ceph-

Re: [ceph-users] Radosgw admin ops API command question

Thanks for your help!! That's what I need. Regards, Horace Ng - Original Message - From: "Daniel Gryniewicz" To: ceph-users@lists.ceph.com Sent: Thursday, July 21, 2016 10:34:14 PM Subject: Re: [ceph-users] Radosgw admin ops API command question On 07/21/2016 05:04 A

[ceph-users] Inaccurate client io stats

sdd | busy 3% | read 0 | write 1195 | KiB/w 57 | MBr/s0.0 | MBw/s6.7 | avio 0.24 ms | Regards, Horace Ng ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

Re: [ceph-users] Inaccurate client io stats

I'm using filestore with SSD journal and a 3x replication. I've only noticed the low client IO after luminous upgrade, the actual traffic should be much higher. It had never been that low since my giant deployment (yup, it is a very old cluster) Regards, Horace Ng - Origin

[ceph-users] SSD-primary crush rule doesn't work as intended

[23,1,11] 23 27953'182582 2018-05-23 06:20:56.08817227843'162478 2018-05-20 18:28:20.118632 With osd.23 and osd.11 being assigned on the same host. Regards, Horace Ng ___ ceph-users mailing list ceph-users@lists.ceph.com h

Re: [ceph-users] SSD-primary crush rule doesn't work as intended

take default class hdd step chooseleaf firstn -1 type host step emit } Regards, Horace Ng - Original Message - From: "horace" To: "ceph-users" Sent: Wednesday, May 23, 2018 3:56:20 PM Subject: [ceph-users] SSD-primary crush rule doesn't work as

Re: [ceph-users] SSD-primary crush rule doesn't work as intended

Oh, it's not working as intended though the ssd-primary rule is officially listed on ceph documentation. I should file a feature request or bugzilla for it? Regards, Horace Ng From: "Paul Emmerich" To: "horace" Cc: "ceph-users" Sent: Wednesday, M

Re: [ceph-users] SSD-primary crush rule doesn't work as intended

-sata-and-ssd-within-the-same-box/ Regards, Horace Ng From: "Peter Linder" To: "Paul Emmerich" , "horace" Cc: "ceph-users" Sent: Thursday, May 24, 2018 3:46:59 PM Subject: Re: [ceph-users] SSD-primary crush rule doesn't work as intended

Re: [ceph-users] VMWARE and RBD

Seems there's no plan for that and the vmware kernel documentation will only share to partners. You would better off to use iscsi. By the way, i found that the performance is much better for SCST than ceph-iscsi. I don't think ceph-iscsi is production-ready? Regards, Horace

Re: [ceph-users] HDD-only performance, how far can it be sped up ?

You need 1 core per SATA disk, otherwise your load average will be skyrocketed when your system is at full load and render the cluster unstable, i.e. ceph-mon unreachable, slow requests, etc. Regards, Horace Ng - Original Message - From: "Brian :" To: "Wladimir Mutel

[ceph-users] NVRAM cache for ceph journal

Dear all, Is anybody got any experience on this product? It is a BBU backed NVRAM cache, I think it is most fit on Ceph. https://www.microsemi.com/products/storage/flashtec-nvram-drives/nv1616 Regards, Horace Ng ISL E-Mail Disclaimer (http://www.hkisl.net/index.php?hkisl_page=emailDisclaimer

Re: [ceph-users] NVRAM cache for ceph journal

those servers last year, don't know if it is on the market yet. http://searchsolidstatestorage.techtarget.com/news/450280262/HPE-launches-NVDIMM-NVMe-persistent-memory-products Regards, Horace Ng - ISL HK Limited E-mail: hor...@hkisl.net Tel: +852 27109880 Fax: +852 27704631 - Origin

Re: [ceph-users] NVRAM cache for ceph journal

Oh, the NVDIMM technology is almost ready in the mass market, linux kernel will be fully supported starting 4.6 (not so far away), I think the NVDIMM hardware is much cheaper than raid card, right? :P http://www.admin-magazine.com/HPC/Articles/NVDIMM-Persistent-Memory ISL E-Mail Disclaimer (ht