Thanks for your feedback/comments.I have following queries, 1.Is your root file system (/dev/xvda1) is ext4? 2.Have you added the directory /mnt/d1 using "giis-ext4 --install" option? Because you need to configure it to protect important directories, in this case add /mnt/d1 before running "giis-ext4 -g". I get the same error message,when giis-ext4 -g is invoked without configuring it using "giis-ext4 --install" ----------- giis-ext4: giis-ext4.c:863: open_db: Assertion `error == 0' failed. Aborted (core dumped) ------------- See my comments (/* */) on right-side in following output: ------------------------- # giis-ext4 --install Device Found : /dev/mapper/vg_space-lv_root /* root device taken from /etc/mtab */ giis : Taking snapshot of current File system giis-ext4:Installation begins.. giis-ext4: header table created giis-ext4: file table created What's the maximum directory depth?5 /*Max. directory depth involved */ Enter the dirname name,that you would like to protect(Max. 7 directories) Enter dirname:/mnt/d1 /* Enter important directories to protect */ Press 1 to add/protect another directory else Press 0 to complete: 1 Enter dirname:/opt/testing /* Enter important directories */ Press 1 to add/protect another directory else Press 0 to complete: 0 Check for newly files every 'auto update time' minutes. Enter auto update time: 10 /* Every 10 minutes giis-ext4 , searches for any modified/new files under protected dirs*/ ------------------- Now if you delete files from protected dirs (say /mnt/d1),then you can recover them using "giis-ext4 -g " option. Thanks for the Makefile too,I'll use it :) If you are stilling getting same error , please let me know. -- ---- Cheers, Lakshmipathi.G <a href="http://www.giis.co.in">www.giis.co.in</a> <div class="gmail_quote">On Sat, Feb 13, 2010 at 1:17 PM, Christian Kujau <<a href="mailto:lists@nerdbynature.de">lists@nerdbynature.de</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="im">On Thu, 11 Feb 2010 at 19:56, lakshmi pathi wrote: > Feedback/comments on giis-ext4 are most welcome. </div>I'm always curious about these undeletion attempts and so I've tried it. But without luck again: # giis-ext4 -g Enter your option: 1 giis-ext4: giis-ext4.c:863: open_db: Assertion `error == 0' failed. Aborted # echo $? 134 This has been compiled with - e2fslibs-dev 1.41.10 - libsqlite3-dev 3.6.22 - gcc 4.4.3, with -g -ggdb I've attached the gdb output and tune2fs output to this email. HTH, Christian. -- BOFH excuse #24: network packets travelling uphill (use a carrier pigeon)</blockquote></div>