Find out the type of an automounted device
- by Steve Bennett
I'm working on a system (Ubuntu Precise) with a mount defined in /etc/fstab as follows:
/dev/vdb /mnt auto defaults,nobootwait,comment=cloudconfig 0 2
Originally I just wanted to find out if it's NFS (due to potential MySQL locking issues). Judging from man mount, it's not:
If no -t option is given, or if the auto type is specified, mount will try to guess the desired type. Mount uses the blkid library for guessing the
filesystem type; if that does not turn up anything that looks familiar, mount will try to read the file /etc/filesystems, or, if that does not exist,
/proc/filesystems. All of the filesystem types listed there will be tried, except for those that are labeled "nodev" (e.g., devpts, proc and nfs).
If /etc/filesystems ends in a line with a single * only, mount will read /proc/filesystems afterwards.
But, out of curiosity now, how can I find out more about what type of device it actually is? (For context, this is a VM running on OpenStack. The device is a 60Gb allocation mounted from somewhere - but I don't know how.)`
EDIT Including answers here:
$ mount
/dev/vdb on /mnt type ext3 (rw,_netdev)
$ df -T
/dev/vdb ext3 61927420 2936068 55845624 5% /mnt
