Help using find/grep Post: 302269438

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LEARN ABOUT DEBIAN

mhddfs

mhddfs(1)						      General Commands Manual							 mhddfs(1)

NAME

       mhddfs - The driver combines a several mount points into the single one.

SYNOPSIS

	mhddfs /dir1,/dir2[,/path/to/dir3] /path/to/mount [-o options]
	mhddfs /dir1 dir2,dir3 /mount/point [-o options]
	...
	fusermount -u /path/to/mount

   fstab record example:
       mhddfs#/path/to/dir1,/path/to/dir2 /mnt/point fuse defaults 0 0

       mhddfs#/dir1,/dir2,/dir3 /mnt fuse logfile=/var/log/mhddfs.log 0 0

OPTIONS

       with an -o option1,option2...  you can specify some additional options:

   logfile=/path/to/file.log
       specify a file that will contain debug information.

   loglevel=x
       0 - debug messages

       1 - info messages

       2 - standard (default) messages

   mlimit=size[m|k|g]
       a  free space size threshold If a drive has the free space less than the threshold specifed then another drive will be choosen while creat-
       ing a new file.	If all the drives have free space less than the threshold specified then a  drive  containing  most  free  space  will	be
       choosen.

       Default value is 4G, minimum value is 100M.

       This option accepts suffixes:
	      [mM] - megabytes

	      [gG] - gigabytes

	      [kK] - kilobytes

       For an information about the additional options see output of:
	      mhddfs -h

DESCRIPTION

       The  file  system  allows to unite a several mount points (or directories) to the single one. So a one big filesystem is simulated and this
       makes it possible to combine a several hard drives or network file systems. This system is like unionfs but it can choose a drive with  the
       most of free space, and move the data between drives transparently for the applications.

       While writing files they are written to a 1st hdd until the hdd has the free space (see mlimit option), then they are written on a 2nd hdd,
       then to 3rd etc.

       df will show a total statistics of all filesystems like there is a big one hdd.

       If an overflow arises while writing to the hdd1 then a file content already written will be transferred to a hdd containing enough of  free
       space  for a file. The transferring is processed on-the-fly, fully transparent for the application that is writing. So this behaviour simu-
       lates a big file system.

   WARNINGS
       The filesystems are combined must provide a possibility to get their parameters correctly (e.g. size of free space). Otherwise the  writing
       failure can occur (but data consistency will be ok anyway). For example it is a bad idea to combine a several sshfs systems together.

       Please read FUSE documentation for a further conception.

COPYRIGHT

       Distributed under GPLv3

       Copyright (C) 2008 Dmitry E. Oboukhov <dimka@avanto.org>

								   February 2008							 mhddfs(1)

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