MAN page from RedHat Other e2fsprogs-1.10-1.i386.rpm

TUNE2FS

Section: Maintenance Commands (8)
Updated: April 1997
Index

NAME

tune2fs - adjust tunable filesystem parameters on second extended filesystems

SYNOPSIS

tune2fs[-l][-cmax-mount-counts][-eerrors-behavior][-iinterval-between-checks][-mreserved-blocks-percentage][-rreserved-blocks-count][-s sparse-super-flag][-uuser][-ggroup][-Cmount-count][-Lvolume-name][-Mlast-mounted-directory][-UUUID]device

DESCRIPTION

tune2fsadjusts 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-behaviorcan 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.
groupcan 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.
-s sparse_super_flag: sets and resets the sparse_superblock flag. The sparse_superblock featuresaves space on really big filesystems.Warning:The Linux 2.0 kernel does not properly support this feature. Neither doall Linux 2.1 kernels; please don't use this unless you know what you'redoing!
-u user: set the user who can benefit from the reserved blocks.usercan be a numerical uid or a user name.
: -C mount-countset the number of times the filesystem has been mounted.
-L volume-label: set the volume label of the filesystem.
-M last-mounted-directory: set the last-mounted direcctory for the filesystem.
-U UUID: set the UUID of the filesystem. A sample UUID looks like this: "c1b9d5a2-f162-11cf-9ece-0020afc76f16". The uuid may also be "null", which will set the filesystem UUID to the null UUID. The uuid may also be "random", which will generate a new random UUID for the filesystem.

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 <cardAATTmasi.ibp.fr>, the developer and maintainerof the ext2 fs.
tune2fsuses the ext2fs library written by Theodore Ts'o <tytsoAATTmit.edu>.
This manual page was written by Christian Kuhtz <chkAATTdata-hh.Hanse.DE>.
Timedependent checking was added by Uwe Ohse <uweAATTtirka.gun.de>.

AVAILABILITY

tune2fsis available for anonymous ftp from ftp.ibp.fr and tsx-11.mit.edu in/pub/linux/packages/ext2fs.

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