Hi Lamar, On Mon, Sep 26, 2011 at 5:53 AM, Lamar Owen <lo...@pari.edu> wrote: > On Friday, September 23, 2011 04:29:39 PM Paras pradhan wrote: >> This is a SAN drive mounted. I have checked with my storage >> administrator if this has been re mapped or any similar events and he >> verified that nothing has happened...(I trust him) > > May I ask what sort of SAN? Fibre Channel or iSCSI? Are there any access > controls (such as EMC's Access Logix or zoning in the switch) in place to > prevent multiple initiators connecting to a particular LUN?
Its a Hitachi OpenV fibre channel SAN (4Gbps HBA). My storage admin checked if this LUN can be accessible by others and he found no other hosts have access to it. > > SAN attachment mildly complicates things; I've seen some odd LUN reshuffling > before, but it was an older FLARE than what I'm currently running on our > Clariions and it was something that was a corner case but was fixed in a > later NDU, and it had to do with Access Logix (I don't remember the Primus > number right off, as it has been several years now). reshuffling here means automatically changing disk's geometry as I am having an issue? It would be interesting to know if this can happen. > > If the SAN OS keeps event logs you could try to correlate with the event; > beyond that you may just have to do some testing. > > As you say, someone somewhere had to do a repartition; the hard part is > determining where the error is. Good luck. Here are some new additional info : My colleague mounted this LUN to a different host and we found the same partitions over there too which is normal. I dd a 1st device to a file and opened the image file with bvi and found some hosts name, VG name etc etc. in there. Then he ran a recovery tool (R studio) in all three devices and was able to recover most of this data. So my question is: if the LUN has been re partitioned for ex: say to install windows , why am i seeing our data in these newly created partitions? Is it possible to see data in a reapportioned drive? Thanks Paras. > _______________________________________________ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
