Thanks very much，Mike ! On Nov 26, 2014, at 12:42, Michael Kuriger <mk7...@yp.com> wrote:
> I cannot go into detail about how or where your particular system is writing > files. All I can reiterate is that bbd images can only be mounted to one > host at a time, unless you're using a cluster aware file system. > > Hope that helps! > -Mike > > -----Original Message----- > From: mail list [mailto:louis.hust...@gmail.com] > Sent: Tuesday, November 25, 2014 8:27 PM > To: Michael Kuriger > Cc: ceph-us...@ceph.com > Subject: Re: [ceph-users] Question about mount the same rbd in different > machine > > Hi Michael, > > I write the same file with different content, and there is no hint for > overwrite, so when the corrupt will appear? > > On Nov 26, 2014, at 12:23, Michael Kuriger <mk7...@yp.com> wrote: > >> Each server mounting the rbd device thinks it's the only server writing to >> it. They are not aware of the other server and therefore will overwrite and >> corrupt the filesystem as soon as each server writes a file. >> >> -----Original Message----- >> From: mail list [mailto:louis.hust...@gmail.com] >> Sent: Tuesday, November 25, 2014 8:11 PM >> To: Michael Kuriger >> Cc: ceph-us...@ceph.com >> Subject: Re: [ceph-users] Question about mount the same rbd in different >> machine >> >> hi, >> >> But i have touched the same file on the two machine under the same rbi with >> no error. >> will it cause some problem or just not suggested but can do? >> >> On Nov 26, 2014, at 12:08, Michael Kuriger <mk7...@yp.com> wrote: >> >>> You can't write from 2 nodes mounted to the same rbd at the same time >>> without a cluster aware file system. >>> >>> >>> >>> -----Original Message----- >>> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of >>> mail list >>> Sent: Tuesday, November 25, 2014 7:30 PM >>> To: ceph-us...@ceph.com >>> Subject: [ceph-users] Question about mount the same rbd in different machine >>> >>> Hi, all >>> >>> I create a rbd named foo, and then map it and mount on two different >>> machine, and when i touch a file on the machine A, machine B can not see >>> the new file, and machine B can also touch a same file! >>> >>> I want to know if the rbd the same on machine A and B? or exactly they are >>> two rbd? >>> >>> Any idea will be appreciate! >>> _______________________________________________ >>> ceph-users mailing list >>> ceph-users@lists.ceph.com >>> https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.ceph.com_listinfo.cgi_ceph-2Dusers-2Dceph.com&d=AAICAg&c=lXkdEK1PC7UK9oKA-BBSI8p1AamzLOSncm6Vfn0C_UQ&r=CSYA9OS6Qd7fQySI2LDvlQ&m=Xr6ISOkb1Lr6Bkl1PP_iLNTxnz38NvS2tI3k_MDbARA&s=IFerPncrFNxmE2_vwEv8X-XVezPfATstmGR6FL8jmaU&e= >>> >> > _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
