Ceph performance is a very very complicated subject. How does that compare to other access methods? Say, rbd import/export for an easy test? On Jul 12, 2013 8:22 AM, "Toni F. [ackstorm]" <toni.fuen...@ackstorm.es> wrote:
> It works, but the performance is very poor. 100MB/s or less > > Which are your performance experience? > > Regards > > On 12/07/13 13:56, Toni F. [ackstorm] wrote: > >> It works! >> >> Thanks for all >> >> On 12/07/13 11:23, Toni F. [ackstorm] wrote: >> >>> Yes! it seems that i wasn't compiled the rbd support. >>> >>> System: >>> State: ready >>> debug: off >>> LLDs: >>> iscsi: ready >>> Backing stores: >>> bsg >>> sg >>> null >>> ssc >>> aio >>> rdwr (bsoflags sync:direct) >>> Device types: >>> disk >>> cd/dvd >>> osd >>> controller >>> changer >>> tape >>> passthrough >>> iSNS: >>> iSNS=Off >>> iSNSServerIP= >>> iSNSServerPort=3205 >>> iSNSAccessControl=Off >>> >>> I'm going to recompile it >>> Thanks a lot! >>> >>> On 11/07/13 07:45, Dan Mick wrote: >>> >>>> >>>> >>>> On 07/10/2013 04:12 AM, Toni F. [ackstorm] wrote: >>>> >>>>> Hi all, >>>>> >>>>> I have installed the v0.37 of tgt. >>>>> >>>>> To test this feature i follow the >>>>> http://ceph.com/dev-notes/**adding-support-for-rbd-to-**stgt/<http://ceph.com/dev-notes/adding-support-for-rbd-to-stgt/>guide >>>>> >>>>> When i launch the command: >>>>> >>>>> tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 0 >>>>> --backing-store iscsi-image --bstype rbd >>>>> >>>>> fails >>>>> >>>>> First i think that lun cannot be 0 because lun 0 is used by the >>>>> controller (previous command) >>>>> >>>> >>>> This worked when I first wrote the backend, but tgt may have changed; >>>> I'll investigate and change the blog entry if so. Thanks. >>>> >>>> >>>>> If i launch the correct command with lun 1 i have this error: >>>>> >>>>> tgtadm: invalid request >>>>> >>>>> In syslog: >>>>> >>>>> Jul 10 12:54:03 datastore-lnx001 tgtd: device_mgmt(245) sz:28 >>>>> params:path=iscsi-image,**bstype=rbd >>>>> Jul 10 12:54:03 datastore-lnx001 tgtd: tgt_device_create(532) failed to >>>>> find bstype, rbd >>>>> >>>>> What's wrong? not supported? >>>>> >>>> >>>> >>>> Where did you get your tgtd? Was it built with rbd support (CEPH_RBD >>>> defined >>>> in the environment for make)? >>>> >>>> sudo ./tgtadm --lld iscsi --op show --mode system >>>> >>>> should tell you. >>>> >>>> How did you set up access to ceph.conf? >>>> >>>> >>>> >>> >>> >> >> > > -- > > Toni Fuentes Rico > toni.fuen...@ackstorm.es > Administración de Sistemas > > Oficina central: 902 888 345 > > ACK STORM, S.L. > ISO 9001:2008 (Cert.nº. 536932) > http://ackstorm.es > > Este mensaje electrónico contiene información de ACK STORM, S.L. que es > privada y confidencial, siendo para el uso exclusivo de la persona(s) o > entidades arriba mencionadas. Si usted no es el destinatario señalado, le > informamos que cualquier divulgación, copia, distribución o uso de los > contenidos está prohibida. Si usted ha recibido este mensaje por error, por > favor borre su contenido y comuníquenoslo en la dirección > ackst...@ackstorm.es > >
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