restce.blogg.se - Configure fstab mediacentral

#Configure fstab mediacentral driver
#Configure fstab mediacentral full

When the sgid bit is set on a directory, files and directories created within that directory have their group ownership set to that of the directory, not to the group of the user who created them.

#Configure fstab mediacentral full

The suid bit is used to allow a file to be executed as root, by a normal user, without giving the user full root privileges. Suid: Allows the operation of the suid and sgid bits.Defaults: This is a shorthand way of specifying a set of common settings: rw, suid, dev, exec, auto, nouser, and async).Nouser: The root user is the only user who can mount this file system.User: Any user is allowed to mount the file system.Async: File writes should be buffered and optimized.Best reserved for floppy disks, if anyone is still using them. Sync: File writes should be conducted immediately and not buffered.Rw: The file system should be mounted as read-write.

Ro: The file system should be mounted as read-only.Noexec: The execution of binaries is not allowed on this file system.Exec: The execution of binaries is allowed on this file system.Noauto: The file system is only mounted when you enter the mount -a command.

Auto: The file system will be mounted at boot time, automatically.

The “options” field options must be in a comma-separated list with no spaces between them. Finding the values for these fields can be daunting, particularly the values for the “options” field. These fields must be specified in this order, and they must have a space or a tab between them. If the flag is set to zero, it means “don’t check at all.” If your file system isn’t a journaling file system (such as ext2 or FAT16/32, for example), it is best to turn this off by setting it to 0. Your main boot and operating system partition should be 1, and the rest can be set to 2. It tells Linux which partitions should be checked for errors using fsck, and in which order.

Dump: A reference to an all-but obsolete means of backing up file systems, where the entire file system was “dumped” to tape.

Options: Each file system can have options specified to turn on or off functionality.

Type: The type of file system on the partition.

Mount point: The location in the filesystem at which you wish to have the partition mounted.

This is the identifier for the partition that should be mounted.

File system: Not, as its name would suggest, the type of file system on the partition (that’s what the type field is for).

Each entry is made up of six fields. The fields are:

The fstab file contains an entry for each file system that is mounted when your computer is restarted. A squashfs file system is created each time an application is installed using the snappy package management system. loop devices are used with the squashfs file system. In the screenshot above, you can see that the loop devices are all given a major number of 7 (meaning a loopback, or loop, device), and the minor numbers simply increment by 1 each time. If this is blank, the device is not mounted.

Mountpoint: This shows the point in the file system at which this device is mounted.

The “disk” entry means a disk drive, the “part” entry stands for partition, and “rom” means Read-Only Memory (CD-ROM).

Type: This identifies the type of device.

Ro: This column will show 1 for read-only devices and 0 for read-write devices.

Size: This is the amount of data that can be stored in the device.

Note that device sr0 has a value of 1, indicating it is removable.

Rm: This column shows whether the device is removable or not.

The minor number is a count of the number of devices of that type.

#Configure fstab mediacentral driver

The major number indicates the type of the device (or, more precisely, the type of driver used to talk to that device). Maj:Min: This column holds the major and minor numbers of the device.For example, “sdb2” would be partition 2 on the second SCSI hard drive. If there is a number appended, it indicates a partition. The letter identifies individual hard disks, with “a” being the first, “b”.

Devices names that start “sd” and are followed by a letter represent SCSI hard disks.