Here's the set up:
- Two Ubuntu 9.10 servers - LAMP environment (not really an option to switch OS)
- One MD3000i with iscsi connection
Here's what I'd like to do:
- Have both server see the files that the other one writes to the MD3000i without unmounting the drive. My connections are fine to the MD3000i (using open-iscsi). The MD3000i is great in almost every way I need except for one listed below.
Here's what I don't want to do (for reasons I'm not going to go into - been down this road already):
- Use NFS mounts
Server1.com and Server2.com write to the same drive on the MD3000i. The folder that they are both mounted to is labeled /mnt/files/. They both recognize the partition size correctly.
Then Server1.com writes test1.1.txt to /mnt/files and Server2.com writes test1.2.txt to /mnt/files. Files are written during ssh connections directly on server in this situation. Server1.com does not see test1.2.txt without remount. Server2.com does not see test1.1.txt without remount.
Oddly, if I write the files from an apache server via PHP and the file has a unique name, both server's see it! But if the name is not unique I then have an I/O error (no surprise).
I'm familiar with gfs, gfs2 and ocfs2 but far from competent. I've tried various methods for formatting the drive and mounting it. It seems as though I just can not get the recipe correct.
What are your suggestions? I've tried many different ways to set up what I'm been lead to believe is the holy grail - clustering - with no real success. I know what doesn't work. Could really really use a boost from some helpful tips.