Hi Yehuda, Thank you for your reply so quickly,your idea is very useful for us. our design is that it only use ceph as our file system, don't use NFS or CIFS . i will continue to study ceph codes ,thanks. Jeff.wu å 2010-11-03äç 10:39 +0800ïYehuda Sadeh Weinraubåéï > Hi, > > there are probably a few directions that you can go, but I'm not > sure which would be the easiest or whether it'd actually make sense. > Just to have an idea about what you're really looking for, why > wouldn't doing nfs mount over secret/ work? Is there a real need for > that metadata to go through the mds? > > Yehuda > > On Tue, Nov 2, 2010 at 7:18 PM, Jeff Wu <cpwu@xxxxxxxxxxxxx> wrote: > > hi, > > > > Any ideas or suggestions about this? or , To solve this issue,i need > > deeply look into what parts ceph codes ,OSD ,CRUSH ,.OSD cluster > > expansion .. etc ? Thanks. > > > > > > Jeff.Wu > > > > > > ---------- Forwarded message ---------- > > From: Jeff Wu <cpwu@xxxxxxxxxxxxx> > > To: "sage@xxxxxxxxxxxx" <sage@xxxxxxxxxxxx>, "ceph-devel@xxxxxxxxxxxxxxx" <ceph-devel@xxxxxxxxxxxxxxx> > > Date: Tue, 2 Nov 2010 14:49:58 +0800 > > Subject: Questions about ceph OSD > > Hi , > > > > I have recently been working the preliminary research whether ceph > > can use at our cloud computing storage system in the future , > > ceph is a very very excellent file system.But ,Now ,i hit a very > > important problem for us: > > > > Normally, as ceph described , all of the data are saved at OSDs with > > CRUSHMAP at ceph system. > > > > but my goal is to : > > 1. add a ext3 disk to ceph system ,but doesn't set it as a OSD; > > 2. save the normal data at the OSDs of a ceph system; > > 3. save the special data to a local ext3 disk at a ceph system, > > the ext3 disk is not set as a ceph OSD,but its infos are added to > > MDS and MON,when Write the special data at a ceph client ,these > > special data are not saved to ceph server OSDs ,but saved at the local > > ext3 disk. > > > > like this: > > At ceph client: > > $ mount.ceph 1.2.3.4:6789:/ /ceph > > $ cd /ceph > > $ ls > > cloud user secret > > > > when do writing,"cloud and user" folder data are saved to ceph OSDs , > > but "secret" folder data are saved to a local ext3 disk . > > > > My question is: > > Q1- If i add a new OSD to the ceph system ,but i do a special CRUSH > > placement map . Could this ways solved this problem ?,If can ,How ? > > > > Q2 - If to implement this function as a patch myself, Could you give me > > any ideas ? or what parts of ceph codes(server/client) that i need look > > into ? > > > > Thanks for all help and reply . > > > > > > Jeff.Wu > > Transoft.inc ,Sr.software engineer. > > > > > > > > > > > > -- > > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
