Re: SAN and ibdata files

2007-10-08 Thread Dan Nelson
In the last episode (Oct 08), Ace said: > On 10/7/07, Dan Nelson <[EMAIL PROTECTED]> wrote: > > In the last episode (Oct 06), Ace said: > > > You all know the size problems with ibdata and log files. We plan > > > to move those files to SAN to have maximum storage possible. We > > > did so with con

Re: SAN and ibdata files

2007-10-08 Thread Scott Tanner
Rajan, I believe you are talking about a NAS setup, which is different from the SAN configuration I was referring to. Check out http://www.nas-san.com/differ.html for a quick comparison. With NFS volumes, your adding several layers of overhead when accessing the disks which has a drastic effe

Re: SAN and ibdata files

2007-10-08 Thread Ace
Yes Scott! Only thing that confused and still confusing me is the following note on mysql site - "*Note* It is not a good idea to configure InnoDB to use datafiles or logfiles on NFS volumes. Otherwise, the files might be locked by other processes and become unavailable for use by MySQL. " http:/

Re: SAN and ibdata files

2007-10-08 Thread Scott Tanner
Rajan, In a SAN configuration, the lun/volume should appear just like a locally attached physical disk on your server. MySQL will not need any special configurations to access it, just poiint the datadir to the SAN disk. Regards, Scott Tanner On Mon, 2007-10-08 at 11:06 +0530, Ace wrote: > Tha

Re: SAN and ibdata files

2007-10-07 Thread Ace
Thanks Dan! We do know the permission problem. We tried chown but got "Not a owner" error. That is because of "root squashing" in which root becomes "nobody" when you cd to NFS directory. To overcome this we tried adding "no_root_squash" to export file. but still the error. I will overcome thi

Re: SAN and ibdata files

2007-10-06 Thread Dan Nelson
In the last episode (Oct 06), Ace said: > Hi Experts, > > You all know the size problems with ibdata and log files. We plan to > move those files to SAN to have maximum storage possible. We did so with > configuration changes in my.cnf files to save log and ibdata files on SAN > location. Bu

SAN and ibdata files

2007-10-06 Thread Ace
Hi Experts, You all know the size problems with ibdata and log files. We plan to move those files to SAN to have maximum storage possible. We did so with configuration changes in my.cnf files to save log and ibdata files on SAN location. But got following error - InnoDB: Unable to lock /ops