#######
#
# E-scripts on the ext2 filesystem (e2fs).
#
# Note 1: use the eev command (defined in eev.el) and the
# ee alias (in my .zshrc) to execute parts of this file.
# Executing this file as a whole makes no sense.
# An introduction to eev can be found here:
#
#   (find-eev-quick-intro)
#   http://angg.twu.net/eev-intros/find-eev-quick-intro.html
#
# Note 2: be VERY careful and make sure you understand what
# you're doing.
#
# Note 3: If you use a shell other than zsh things like |&
# and the for loops may not work.
#
# Note 4: I always run as root.
#
# Note 5: some parts are too old and don't work anymore. Some
# never worked.
#
# Note 6: the definitions for the find-xxxfile commands are on my
# .emacs.
#
# Note 7: if you see a strange command check my .zshrc -- it may
# be defined there as a function or an alias.
#
# Note 8: the sections without dates are always older than the
# sections with dates.
#
# This file is at <http://angg.twu.net/e/e2fs.e>
#           or at <http://angg.twu.net/e/e2fs.e.html>.
#        See also <http://angg.twu.net/emacs.html>,
#                 <http://angg.twu.net/.emacs[.html]>,
#                 <http://angg.twu.net/.zshrc[.html]>,
#                 <http://angg.twu.net/escripts.html>,
#             and <http://angg.twu.net/>.
#
#######






# «.badblocks»		(to "badblocks")
# «.smartmontools»	(to "smartmontools")
# «.e2fs-attributes»	(to "e2fs-attributes")
# «.ext2-undeletion»	(to "ext2-undeletion")
# «.unclean-partitions»	(to "unclean-partitions")
# «.e2fs-on-loop»	(to "e2fs-on-loop")
# «.debuge2fs»		(to "debuge2fs")





#####
#
# dealing with the bad blocks in /dev/hdb3
# 2004oct03
#
#####

# «badblocks»  (to ".badblocks")
# (find-man "8 e2fsck")
# (find-man "8 e2fsck" "   -c")
# (find-man "8 e2fsck" "   -k")
# (find-man "8 badblocks")
# (find-man "8 badblocks" "-i input_file")
# (find-man "8 badblocks" "-p num_passes")
# (find-man "8 badblocks" "-s")
# (find-man "8 badblocks" "   -n")
# (find-man "8 badblocks" "   -w")
# (find-man "8 dumpe2fs")
# (find-sh "sudo dumpe2fs /dev/hdb3")
# (find-sh "sudo dumpe2fs -b /dev/hdb3")

e2fsck -c -c -v -y /dev/hdb3

# (find-status   "e2fsprogs")
# (find-vldifile "e2fsprogs.list")
# (find-udfile   "e2fsprogs/")

# (find-status   "e2fslibs-dev")
# (find-vldifile "e2fslibs-dev.list")
# (find-udfile   "e2fslibs-dev/")
# (find-node "(libext2fs)Top")
# (find-node "(libext2fs)Badblocks list management")

# (find-node "(libext2fs)Translating inode numbers to filenames")

# (find-status   "comerr-dev")
# (find-vldifile "comerr-dev.list")
# (find-udfile   "comerr-dev/")
# (find-node "(com_err)Top")




#####
#
# smartmontools
# 2004oct03
#
#####

# «smartmontools»  (to ".smartmontools")
# (find-status   "smartmontools")
# (find-vldifile "smartmontools.list")
# (find-udfile   "smartmontools/")
# (find-man "8 smartctl")
# http://smartmontools.sourceforge.net/
#*
smartctl -i      /dev/hda
smartctl -s on   /dev/hda
smartctl -P show /dev/hda
smartctl -a      /dev/hda

#*
smartctl -i      /dev/hdb
smartctl -s on   /dev/hdb
smartctl -P show /dev/hdb
smartctl -a      /dev/hdb

#*




#####
#
# e2fsprogs: ext2 file attributes
# 2010mar14
#
#####

# «e2fs-attributes»  (to ".e2fs-attributes")
# (find-status   "e2fsprogs")
# (find-vldifile "e2fsprogs.list")
# (find-udfile   "e2fsprogs/")

# (find-fline "/usr/share/initrd-tools/scripts/e2fsprogs")
# (find-man "1 chattr")
# (find-man "1 chattr" "its atime record is not modified")
# (find-man "1 chattr" "`i' attribute")
# (find-man "1 lsattr")
# (find-man "5 e2fsck.conf")
# (find-man "5 mke2fs.conf")
# (find-fline "/etc/mke2fs.conf")
# (find-man "8 badblocks")
# (find-man "8 blkid")
# (find-man "8 debugfs")
# (find-man "8 dumpe2fs")
# (find-man "8 e2fsck")
# (find-man "8 e2image")
# (find-man "8 e2label")
# (find-man "8 e2undo")
# (find-man "8 filefrag")
# (find-man "8 findfs")
# (find-man "8 fsck")
# (find-man "8 fsck.ext2")
# (find-man "8 fsck.ext3")
# (find-man "8 fsck.ext4")
# (find-man "8 fsck.ext4dev")
# (find-man "8 logsave")
# (find-man "8 mke2fs")
# (find-man "8 mkfs.ext2")
# (find-man "8 mkfs.ext3")
# (find-man "8 mkfs.ext4")
# (find-man "8 mkfs.ext4dev")
# (find-man "8 mklost+found")
# (find-man "8 resize2fs")
# (find-man "8 tune2fs")
# (find-man "8 tune2fs" "user_xattr")

# (eeman "chattr")
# (eeman "chattr" ".i. attribute")
# (eeman "lsattr")

cd /hdd5/
lsattr bup/*
chattr +i bup/*
lsattr bup/*
chattr -i bup/*
lsattr bup/*

# Unprotect:
chattr -R -i *




# http://web.mit.edu/tytso/www/linux/ext2intro.html





#####
#
# Undeletion for ext2 filesystems
# 2004oct03
#
#####

# «ext2-undeletion»  (to ".ext2-undeletion")
# (find-k24file "Documentation/Configure.help" "Undeletion")
# (find-htetfile "Ext2fs-Undeletion.gz")
# (find-htetfile "Ext2fs-Undeletion.gz" "  13.  Are there any tools to automate this process?")

# (find-status   "mc")
# (find-vldifile "mc.list")
# (find-udfile   "mc/")
# (find-fline "/usr/share/mc/extfs/README")
# (find-fline "/usr/share/mc/extfs/")
# (find-man  "1 mc")
# (find-man  "1 mc" "/#undel")
# (find-udfile "mc/FAQ.gz")
# (find-udfile "mc/README.gz")

# (find-status   "lde")
# (find-vldifile "lde.list")
# (find-udfile   "lde/")
# (find-man  "8 lde")
# (find-udfile "lde/README")
# (find-udfile "lde/TODO")
# (find-udfile "lde/UNERASE.gz")
# (find-pspage (ee-udfile "lde/ext2fs.ps.gz") 1)





#####
#
# Which partitions are not clean?
# 2000jun12
#
#####

# «unclean-partitions»  (to ".unclean-partitions")
dumpe2fs -h /dev/hda5
fdisk -l |& grep 'Linux$'

fdisk -l |& grep 'Linux$' | awk '{ print $1 }'

for i in $(fdisk -l |& grep 'Linux$' | awk '{ print $1 }'); do
  echo " $i:"
  dumpe2fs -h $i |& egrep 'state|ount count'
done




#####
#
# ext2 filesystems on loop devices
# 2004oct03
#
#####

# «e2fs-on-loop»  (to ".e2fs-on-loop")
# (find-node "(coreutils)dd invocation")
# (find-man "8 mke2fs")
#*
umount    /tmp/minie2
dd bs=1M count=4 < /dev/zero > /tmp/minie2.img 
mke2fs -F /tmp/minie2.img
mkdir     /tmp/minie2

#*
mount -o loop /tmp/minie2.img /tmp/minie2

#*
umount /tmp/minie2

#*




#####
#
# debuge2fs
# 2004dec16
#
#####

# «debuge2fs»  (to ".debuge2fs")
# (find-status   "e2fsprogs")
# (find-vldifile "e2fsprogs.list")
# (find-udfile   "e2fsprogs/")
# (find-man "8 debugfs")
# (find-man "8 e2image")
#*
sudo umount /tmp/smallext2/
rmdir       /tmp/smallext2/
rm -v       /tmp/smallext2.img

dd if=/dev/zero of=/tmp/smallext2.img bs=1M count=1
mke2fs -F /tmp/smallext2.img

mkdir       /tmp/smallext2/
sudo mount -o loop /tmp/smallext2.img /tmp/smallext2/

#*
cd /tmp/smallext2/
mkdir -p dir1/dir2/
function f () { echo "Offset 0 of $1" > $1 }
f file1
f file2
f dir1/file3
f dir1/file4
f dir1/dir2/file5
f dir1/dir2/file6

#*
cd /tmp/
sudo umount /tmp/smallext2/

#*






# http://e2fsprogs.sourceforge.net/ext2intro.html



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