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Full Discussion: Why does ext3 allocate 8 blocks for files that are few bytes long
Operating Systems Linux Why does ext3 allocate 8 blocks for files that are few bytes long Post 302319818 by mark54g on Tuesday 26th of May 2009 09:15:37 AM
Old 05-26-2009
This is so that the file can grow without fragmentation. There are parameters you can change, this may be among them. You can always try a different file system, but, always take a backup before any file system operations.

-----Post Update-----

http://linux.die.net/man/8/mke2fs

You should read up on that. You can change, at creation, the block group size or even the reserved count (5% space reserved for root, by default).
 

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LEARN ABOUT OPENSOLARIS

e2undo

E2UNDO(8)                                                     System Manager's Manual                                                    E2UNDO(8)

NAME

       e2undo - Replay an undo log for an ext2/ext3/ext4 filesystem

SYNOPSIS

       e2undo [ -f ] [ -h ] [ -n ] [ -o offset ] [ -v ] [ -z undo_file ] undo_log device

DESCRIPTION

       e2undo  will replay the undo log undo_log for an ext2/ext3/ext4 filesystem found on device.  This can be used to undo a failed operation by
       an e2fsprogs program.

OPTIONS

       -f     Normally, e2undo will check the filesystem superblock to make sure the undo log matches with the filesystem on the device.  If  they
              do not match, e2undo will refuse to apply the undo log as a safety mechanism.  The -f option disables this safety mechanism.

       -h     Display a usage message.

       -n     Dry-run; do not actually write blocks back to the filesystem.

       -o offset
              Specify the filesystem's offset (in bytes) from the beginning of the device or file.

       -v     Report which block we're currently replaying.

       -z undo_file
              Before  overwriting  a  file  system  block,  write  the old contents of the block to an undo file.  This undo file can be used with
              e2undo(8) to restore the old contents of the file system should something go wrong.  If the empty string is passed as the  undo_file
              argument,  the  undo file will be written to a file named e2undo-device.e2undo in the directory specified via the E2FSPROGS_UNDO_DIR
              environment variable.

              WARNING: The undo file cannot be used to recover from a power or system crash.

AUTHOR

       e2undo was written by Aneesh Kumar K.V. (aneesh.kumar@linux.vnet.ibm.com)

AVAILABILITY

       e2undo is part of the e2fsprogs package and is available from http://e2fsprogs.sourceforge.net.

SEE ALSO

       mke2fs(8), tune2fs(8)

E2fsprogs version 1.44.1                                            March 2018                                                           E2UNDO(8)
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