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
