hi jan, I need to mount it on both machines because I'm inserting data from both since I'm working on active-active web cluster. Yeah I realized that since it cannot be mounted on both machines, I used active-active drbd setup instead and mount it using pacemaker. So its OCFS2 + DRBD thingy which worked for me.
Thanks for all your inputs guys! I really appreciate it. Oliver On Thu, Dec 9, 2010 at 10:37 PM, jan gestre <plugger.l...@gmail.com> wrote: > > > On Wed, Dec 8, 2010 at 3:09 PM, Linux Cook <linuxc...@gmail.com> wrote: > >> hi guys, >> >> I bumped into a problem after settingup OCFS2. I'm trying to mount the >> OCFS2 filesystem into both nodes by adding it into /etc/fstab but only the >> primary node gets the mount. The secondary node didn't mount anything. >> >> Any thoughts? >> >> Oliver >> >> >> On Tue, Dec 7, 2010 at 12:01 PM, Linux Cook <linuxc...@gmail.com> wrote: >> >>> Guys, >>> >>> Thanks for all your inputs and I really really appreciate it. As I >>> mentioned I used OCFS2 with multipathing and that worked for me. >>> >>> Thanks again! >>> >>> Oliver >>> >>> On Tue, Dec 7, 2010 at 11:45 AM, Federico Sevilla III <j...@fs3.ph>wrote: >>> >>>> Hi Oliver, >>>> >>>> Assuming you know the risks involved with what you're trying to do, then >>>> the missing piece is using what is called a shared disk file system. You >>>> already mentioned OCFS2, another option would be GFS (Global File >>>> System). I'm not sure if btrfs and ZFS are shared disk file systems, but >>>> it's worth a check. >>>> >>>> The reason "what you are doing is very dangerous" is if you're not using >>>> a shared disk file system, you basically end up with lost data at best, >>>> but more probably a corrupt and useless file system at the end. "Normal" >>>> file systems are used to having exclusive write access to their block >>>> device. >>>> >>>> Good luck, and have fun. >>>> >>>> Cheers! >>>> >>>> -- >>>> Federico Sevilla III, CISSP, CSM, LPIC-2 >>>> Chief Executive Officer >>>> F S 3 Consulting Inc. >>>> http://www.fs3.ph >>>> >>>> >>>> On Tue, 2010-12-07 at 11:21 +0800, Linux Cook wrote: >>>> > okay some guys told me i should be using ocfs2? would this really >>>> > help? >>>> > >>>> > On Tue, Dec 7, 2010 at 9:50 AM, Jimmy Lim <jimmyb...@gmail.com> >>>> wrote: >>>> > Hi Oliver, >>>> > >>>> > >>>> > What you are doing is very dangerous! You can present the >>>> > LUNs on the 2 servers, but only *one* can only write to it. >>>> > >>>> > >>>> > If you want to achieve redundancy on your server, I believe it >>>> > is better to get the HP Service Guard (but this is not a free >>>> > software). >>>> > >>>> > >>>> > http://docs.hp.com/en/ha.html >>>> > >>>> > >>>> > HTH >>>> > >>>> > >>>> > Jimmy >>>> > >>>> > >>>> > On Tue, Dec 7, 2010 at 1:34 AM, Linux Cook >>>> > <linuxc...@gmail.com> wrote: >>>> > >>>> > >>>> > Hi pluggers, >>>> > >>>> > I've just configured multipathing on my debian boxes >>>> > (Server A and Server B) using HP StorageWorks with >>>> > Dual FCs on each server and can now mount the path >>>> > alias I defined on my multipath configuration. But >>>> > everytime I write a data on Server A, the data are not >>>> > reflecting on Server B. >>>> > >>>> > Any help? >>>> > >>>> > Oliver >>>> >>>> >>>> _________________________________________________ >>>> >>> > Hi Oliver, > > I'm confused, would you care to enlighten? Why are you trying to accomplish > in the first place? I'm assuming you're setting up an HA cluster hence the > need for shared disk and multipath ...., correct? If this is what you're > trying to achieve then you're doing it all wrong, the partition should only > be mounted on one server e.g. Server A, it will only be mounted on Server B > if something happens to Server A e.g. hardware failure. The shared drive > should not be mounted on both machines at the same time or all hell will > break loose. > > Mounting will be done by your cluster manager e.g. Heartbeat or Redhat > cluster manager. > > BTW, you should be fine with either OCFS2 or GFS2 as filesystem. > > HTH. > > Jan >
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