Mount and unmount filesystems

I need the backup volume mounted on the restore server now. Mount the NFS export from 10.0.2.8:/backups at /mnt/backups with rw, hard and intr options, ensure it appears in /etc/fstab so it survives reboots, verify ownership and that backup user can read the latest snapshot, and unmount it cleanly after I confirm the file list. Do not change other mounts.

Before I ask the DBA to approve the restore, make the filesystem easy to review. Show the mount point, the fstab line you will add, surface the effective mount options and any uid/gid mappings, and call out files or directories that would be inaccessible to the DBA if this mount uses root_squash or similar. Suggest the one change to make approvals painless.

I mounted what I thought was the latest backup and began copying; halfway through I realized it was an older snapshot and the target now has mixed content. I don’t know which files were replaced and the DBA is asking what to do. What immediate steps find and stop ongoing corruption, how do I identify which files were modified by this session, and what is the least-destructive path to recover the intended state?

We keep mounting external filesystems on production hosts ad hoc for one-off restores and then leave fstab entries or nonstandard options that later break services. It wastes time and causes surprise permission errors. Where is the friction in our current workflow — discovery, approval, or cleanup — and what two practices should we adopt so temp mounts are auditable, reversible, and safe for service owners?