tune2fs

NAME

       tune2fs  -  adjust tunable filesystem parameters on second
       extended filesystems

SYNOPSIS

       tune2fs [ -l ] [ -c max-mount-counts ] [ -e  errors-behav-
       ior ] [ -i interval-between-checks ] [ -m reserved-blocks-
       percentage ] [ -r reserved-blocks-count ] [ -u user ] [ -g
       group ] device

DESCRIPTION

       tune2fs  adjusts  tunable filesystem parameters on a Linux
       second extended filesystem.

       Never use tune2fs on a read/write  mounted  filesystem  to
       change parameters!

OPTIONS

       -c max-mount-counts
              adjust   the   maximal  mounts  count  between  two
              filesystem checks.

       -e errors-behavior
              change the behavior of the kernel code when  errors
              are  detected.   errors-behavior  can be one of the
              followings:
                   continue       Continue normal execution.
                   remount-ro     Remount  the  filesystem  read-
              only.
                   panic          Causes a kernel panic.

       -g group
              set  the  user  group  which  can  benefit from the
              reserved blocks.
              group can be a numerical gid or a group name.

       -i interval-between-checks[d|m|w]
              adjust the  maximal  time  between  two  filesystem
              checks.   No  postfix or `d' result in days, `m' in
              months, and `w' in weeks.  A  value  of  zero  will
              disable the timedependent checking.

       -l     list the contents of the filesystem superblock.

       -m reserved-blocks-percentage
              adjust  the reserved blocks percentage on the given
              device.

       -r reserved-blocks-count
              adjust the  reserved  blocks  count  on  the  given
              device.


       -u user
              set  the  user  who  can  benefit from the reserved
              blocks.  user can be a  numerical  uid  or  a  user
              name.

BUGS

       We  didn't  find  any bugs yet. Perhaps there are bugs but
       it's unlikely.

WARNING

       Use this  utility  on  your  own  risk.  You're  modifying
       filesystems.

AUTHOR

       tune2fs  has been written by Remy Card <card@masi.ibp.fr>,
       the developer and maintainer of the ext2 fs.
       tune2fs uses the ext2fs library written by  Theodore  Ts'o
       <tytso@mit.edu>.
       This manual page was written by Christian Kuhtz <chk@data-
       hh.Hanse.DE>.
       Timedependent   checking   was   added   by    Uwe    Ohse
       <uwe@tirka.gun.de>.

AVAILABILITY

       tune2fs is available for anonymous ftp from ftp.ibp.fr and
       tsx-11.mit.edu in /pub/linux/packages/ext2fs.

SEE ALSO

       dumpe2fs(8), e2fsck(8), mke2fs(8)