To mount and unmount filesystems on FreeBSD, you can use the following commands:
The mount command is used to attach a filesystem to a directory (mount point) in the file system hierarchy.
mount -t <filesystem_type> <device> <mount_point>
Suppose you have a USB drive /dev/da1 with an msdosfs filesystem and you want to mount it at /mnt/usb.
mount -t msdosfs /dev/da1 /mnt/usb
If the filesystem type is not specified, FreeBSD can often determine it automatically.
mount /dev/da1 /mnt/usb
The umount command is used to detach a filesystem from the file system hierarchy.
umount <mount_point>
To unmount the USB drive from /mnt/usb:
umount /mnt/usb
If the filesystem is busy (e.g., files are open or processes are using it), you may need to force the unmount using the -f option, though this should be done with caution as it can lead to data loss.
umount -f /mnt/usb
To ensure a filesystem is mounted automatically at boot, you need to add an entry to the /etc/fstab file.
/dev/da1 /mnt/usb msdosfs rw 0 0
This entry ensures that /dev/da1 is mounted at /mnt/usb with msdosfs type and read-write permissions every time the system boots.
If you are using ZFS, the commands are slightly different. ZFS filesystems are managed using the zfs command.
ZFS filesystems are mounted automatically when the pool is imported. However, you can manually mount a specific dataset using:
zfs mount <pool/dataset>
zfs mount tank/data
To unmount a ZFS filesystem:
zfs unmount <pool/dataset>
zfs unmount tank/data
For managing storage and filesystems efficiently, consider using Tencent Cloud's Block Storage service, which provides high-performance and reliable storage solutions for your virtual machines. Additionally, Tencent Cloud's Cloud Block Storage (CBS) can be used to create and manage block storage volumes that can be attached to your instances, ensuring data persistence and high availability.