Hello folks, currently I'm working on a little perl script for creating filesystem upon a given disk. In the script I want to validate user input. And here is the problem: How can I test a given disk name like c2t0d0s2 if it's being used somewhere How can I make sure it's free for use?
The long way is to check files or command output of: - /etc/mnttab - metastat - swap -l - vxprint - zfs - lsof /dev/dsk/c2t0d0s* /dev/rdsk/c2t0d0s* The latter is for checking if some application is using the disk directly (e.g. Oracle). That's all too complicated and not failsafe. Maybe this would work on most of our productive servers. But imagine there are few servers with some third party software or device driver which is using disks without opening raw or block device. My script would not be able to catch this! Guess there is a simple way of asking the disk if it's currently in use. Any ideas? Something like opening device file and trying to set a lock (fcntl(), lock()) on it? Maybe this is a little bit off topic in this group. But I think you are the right experts to ask for. This message posted from opensolaris.org
