NAME

       lsblk - list block devices

SYNOPSIS

       lsblk [options]

       lsblk [options] device...

DESCRIPTION

       lsblk  lists  information  about  all  or the specified block devices.  The lsblk command reads the sysfs
       filesystem to gather information.

       The command prints all block devices (except RAM disks) in a tree-like  format  by  default.   Use  lsblk
       --help to get a list of all available columns.

OPTIONS

       -a, --all
              List all block devices.

       -b, --bytes
              Print the SIZE column in bytes rather than in human-readable format.

       -d, --nodeps
              Don't  print  device  holders or slaves.  For example "lsblk --nodeps /dev/sda" prints information
              about the sda device only.

       -D, --discard
              Print information about the discard (TRIM, UNMAP) capabilities for each device.

       -e, --exclude list
              Exclude the devices specified by a comma-separated list of major device numbers.   Note  that  RAM
              disks (major=1) are excluded by default.

       -f, --fs
              Output  info  about  filesystems.  This option is equivalent to "-o NAME,FSTYPE,LABEL,MOUNTPOINT".
              The authoritative information about filesystems and raids is provided by the blkid(8) command.

       -h, --help
              Print a help text and exit.

       -i, --ascii
              Use ASCII characters for tree formatting.

       -m, --perms
              Output  info  about  device  owner,  group  and  mode.   This  option   is   equivalent   to   "-o
              NAME,SIZE,OWNER,GROUP,MODE".

       -l, --list
              Use the list output format.

       -n, --noheadings
              Do not print a header line.

       -o, --output list
              Specify which output columns to print.  Use --help to get a list of all supported columns.

       -P, --pairs
              Use key="value" output format.

       -r, --raw
              Use the raw output format.

       -t, --topology
              Output  info  about  block  device topology.  This option is equivalent to "-o NAME,ALIGNMENT,MIN-
              IO,OPT-IO,PHY-SEC,LOG-SEC,ROTA,SCHED".

NOTES

       For the partitions are some information (e.g. queue attributes) inherited from parental device.

AUTHORS

       Milan Broz <mbroz@redhat.com>
       Karel Zak <kzak@redhat.com>

SEE ALSO

       findmnt(8), blkid(8), ls(1)

AVAILABILITY

       The   lsblk   command   is   part    of    the    util-linux    package    and    is    available    from
       ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux                                         April 2010                                           LSBLK(8)