Software :: HDD Recovery (Invalid B-Tree Node Size Error)
Mar 25, 2010
Basically, I am running diskwarrior on my mac now to try and fix invalid b-tree node size error. It is my boot drive and therefore cannot get onto the operating system. I have used live linux distros to try and get at the hdd that way, I have installed HFStools and testdisk and tried almost everything possible from within Linux itself to recover this HFS+ drive, but they were all a no go. My last resort was to try diskwarrior and it is rebuilding the drive now, well it has been for about 38 hours now but doesn't give any indication as to how long it will take.
I am pretty sure I am right in thinking data is never truly deleted until it is overwritten, is that right? Even if reformatted, would I be correct in thinking that if I were to format the drive and install linux on my machine, some of the data on the Drive would still be technically recoverable, even though the file system has changed? i.e. from HFS to EXT3. If this is technically possible what software would I need to try and recover files from a drive that has been formatted from HFS+ to EXT3?
It doesn't matter if I cant get it all, or might be more hassle than its worth, my girlfriend has another laptop to use for now and is in no hurry and I like getting to play around with Linux. The data is somewhat important but not enough so to go through the whole sending off the drive and paying hefty fees, it would be very nice to get back and I enjoy working in linux and learning more about software/hardware etc.
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Apr 24, 2011
So I've been writing a code and I have been adding functions to make life easy, but all of a sudden when i added the last function I got this error *** glibc detected *** /home/ahzeeper/Desktop/C-code/check6: free(): invalid next size (fast): 0x0804c048 ***followed by a huge backtraceNow here is my code
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
[code]...
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Jul 19, 2011
I wrote a test program for learning usage of realloc() and I thin I did everything right but I get this error exactly with my 4th time that while tries to reallocate memory in MakeDSt function for DSt->SArray:
Quote:
realloc(): invalid next size
this is my complete code :
Code:
#include <stdio.h>
#include <stdlib.h>
typedef struct DRA
{
code....
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Apr 24, 2010
I'm trying to find a command or program to show what files and folders are taking up the most space on the hard drive, much like tree size view on windows, is there and equivalent on linux?
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Jan 28, 2010
I've set up DRBD on 2 machines, 1 of them is the master, another is the slave.
After each bootup, I need to run the following on the master machine:
Code:
drbdadm -- --overwrite-data-of-peer primary all
Do we need to specify which machine should be the primary node every time? Is there any method to make the machine "know" it's itself the primary node?
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Dec 16, 2010
I have created a simple menu driven script for our Operations to take care of the basic monitoring and managing of our production application from the back-end. Now, the script when tested in UAT environment was fine, but when deployed to production it kind of behaved oddly.hen the Operator chooses an option from the menu he is given the output and at the end is prompted to return to the main menu by using ctrl+c. In production, this return does not occur for some strange reason and the program just sits there.The session becomes unresponsive after that and I'm forced to terminated it by closing the PuTTY.I tried enabling the debug mode too (set -x) and still was not able to find any useful hints/trails as to why.
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Mar 1, 2011
I am familiar with windows 2008 cluster servers, and I just started testing with centos cluster. I am creating a simple 2-node cluster, for a simple ping test.
Node 1: 10.0.0.1
Node 2: 10.0.0.1
Virtual ip: 10.0.0.10
So far, I can ping a virtual ip, and manually relocate it between the nodes, but I didn't figure out, how to do this automatically. So this is my question: How can I setup the cluster, to it automatically failover the a service to another node case one node fails?
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Oct 27, 2010
I don't have much experience in clustering. And I'm deploying a cluster system on CentOS.But I don't know how long a node failover and another node take over those resouces to continue running service is good, fast or slow? 1s, 10s or
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Dec 11, 2010
I have an 80GB Intel X25-M SSD drive installed on a Linux box running Debian 5.0. The file system on the SSD is ext4. I've had no problems with the drive, and have been using it for quite some time as both swap file storage as well as a place to store a few large database files which require random access.
However, I noticed this odd size readout from ls:
> ls -lh /ssd
total 34G
-rwx------ 1 root root 23G 2010-12-11 18:00 file1.dat
-rwx------ 1 root root 22G 2010-12-11 18:00 file2.dat
I changed the names of the files here for security reasons, but other than that this is exactly what ls has output. Obviously, the total size readout is incorrect.
Here is the corresponding output from df
> df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 74G 35G 36G 50% /ssd
Despite this incorrect readout, the drive seems to be working fine, and diagnostic utilities turned up nothing wrong with the drive. Is this some sort of known bug in ext4, or is it more likely there's something physically wrong with the drive?
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Apr 27, 2011
i manage to delete some files from the system. now i need to recover them.. i know the inode # (through ext3undel) and also the size.Quote:Unfortunately, we cannot automatically obtain the name of a deleted filefrom Unix file systems - since the connection between the iNode (whichholds the MetaData, including the file namee real data is droppedon deletion. However, we can obtain a list of names from the deleted files.How can i use this information to recover the files?Also can i search the text from a partition? (file don't exists). As i need figures
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Oct 26, 2010
I am having an issue with LVM on a 2 node cluster. We are using powerpath for external drives. We had a request to increase /apps filesystem which is EXT3.
On the first node we did:
pvcreate /dev/emcpowercx1 and /dev/emcpowercw2
Then....
vgextend apps_vg /dev/emcpowercw2 /dev/emcpowercx1
lvresize -L +60G /dev/apps_vg/apps_lv
resize2fs /dev/apps_vg/apps_lv
Everything went on well , we got the /apps increased. But on the second node when I do pvs.
I am getting following error:
WARNING: Duplicate VG name apps_vg: RnD1W1-peb1-JWay-MyMa-WJfb-41TE-cLwvzL (created here) takes precedence over ttOYXY-dY4h-l91r-bokz-1q5c-kn3k-MCvzUX
How can I proceed from here?
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Feb 2, 2011
Getting the following errors on a new server:
They appear randomly while the system is idle and in use. The system configuration is as follows:
Running the latest Centos 5.5plus kernel (b/c we are using XFS)
The errors appear randomly several times a day. Tried removing some memory, but no combination sees to cause the error to stop.
I see this error posted in many places all over the web - some claim faulty Ram, faulty CPU, faulty mobo, and kernel bug.
Has anyone seen this error and been able to nail it down?
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Jan 6, 2010
I'm building a 3-node cluster. I have created ocfs filesystems and mounted them on the first two nodes. But while mounting them on the third node , i'm getting this error for 8 of the total luns. all these 8 luns are of 1GB size.
I've unmounted these 8 luns from the other node and tried to mount in the third node ... and then it was working and again the error occurs in the second node. My observation was for some reason these particular luns are not allowing the third node.
mount.ocfs2: Invalid argument while mounting /dev/mapper/voting1 on /voting1. Check 'dmesg' for more information on this error.
dmesg output was :
I'm using RHEL 5.4
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Jan 4, 2010
First time setting up Ubuntu Cloud system.
I get error during install when searching for and trying to add node from the Cloud Controler: New node found on 192.168.1.182:add it? [Yn] y Connecting to 127.0.0:8774...failed: Connection refused. Error: you need to be on the CC host and the CC needs to be running.
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Mar 28, 2010
I just installed the snmp packages on Centos 5.2, and when i tried to use the snmpwalk command, the data is not showing and i got this error: No more variables left in this MIB View (It is past the end of the MIB tree).
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Jul 1, 2010
My Ibuntu 10.4 system can't be updated because of error message:"Segmentation faulty tree" coming from apt-get check. It reads 50% of then stops. It shows reading the package lists, the Done.
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Aug 16, 2011
Bottom Line: Dvd Drive died in my toshiba laptop and it was replaced (not before tech for some reason reformatted the Win7 partition... which was 100% un-needed, but thats beside the point now. I redid win7 (the tech installed vista) and am TRYING to "redo grub". Facts: The Slackware AND Ubuntu Partitions ARE STILL THERE and when i use SuperGrub Boot CD (which doesn't restore my grub by itself) to boot into slackware, i can see ALL THE CONTENT of both Linuxes still there including grub on ubuntu partition
(Tri-Boot: Ubuntu, Slackware, and WIn7) I had it working for two years or so, SO i know this "setup" works fine. I am A) Trying to do this as simply as possible. B) Trying to avoid the need to download a 800MB ISO (as seen for this issue on this forum) and trying not to have to reformat Ubuntu Partition (though I have the .Debs I have downloaded for it backed up ... all 1.7GB of them) I have /dev/sda1 as win7, /dev/sda2 as Slack and /dev/sda3 as Ubuntu (which contains Grub Legacy).. Every command I do seems to result in an error like "invalid command" or "invalid Execution format " (i think that second one is right) type errors. I compiled (awhile back) a few kernels for Slackware, but feel goofy that I cant figure what i this out (what i thought was going to be a "2 minute" fix)
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Dec 4, 2010
I am runing debian-5 (lenny), the default kernel 2.6.26 was unable to start the x so i installed the new kernel linux-image-2.6.32-5-686_2.6.32-28_i386.deb, now x works, but there is problem building modules for the intel soft modem linux driver hsfmodem-7.60.00.00oem which is supplied in the modem cd by the intel company.
I installed these kernel packages for this purpose:
linux-base_2.6.32-28_all.deb
linux-image-2.6.32-5-686_2.6.32-28_i386.deb
linux-headers-2.6.32-5-486_2.6.32-28_i386.deb
[code]....
in all these cases hsfconfig failed with the above error,
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Oct 1, 2010
I installed the latest kernel liquorix (2.6.35) but when i want to install the Nvidia driver downloaded on the Nvidia website (256.53), i have an error message because Nvidia doesn't found the kernel source tree.
I install linux-image-2.6.35-6.dmz.2-liquorix-686_2.6.35-16_i386.deb, linux-headers-2.6.35-6.dmz.2-liquorix-686_2.6.35-16_i386.deb and build-essential. I don't understand why the installation doesn't works.
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Nov 13, 2010
for some reason my first updating was interrupted and from then i cannot update. i get the following message:
rpmdb: PANIC: fatal region error detected; run recovery
error: db3 error(-30974) from dbenv->open: DB_RUNRECOVERY: Fatal error, run database recovery
error: cannot open Packages index using db3 - (-30974)
error: cannot open Packages database in /var/lib/rpm
CRITICAL:yum.main:
Error: rpmdb open failed
[root@laptop etc]# yum repolist
[Code]....
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Aug 28, 2009
I have a backup of /oracle in redhat linux advance server 2.1,i have taken that backup by tar -cvzf command when untar this backup by tar -xvzf command the following error occurred-"Error exist delayed from previous error"
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Jun 14, 2011
not solved the correct way, reloaded using the backup i had the foresight to make i separated / into 3 partitions (/, /tmp, and /var) and after a lot of work (and hair pulling) i can now boot and login but i am getting these 2 errors during bootup
There was an error mounting /var/run Press S to skip M for manual recovery
There was an error mounting /var/lock Press S to skip M for manual recovery
[Code]....
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May 20, 2010
i installed kernel 2.6.34 to fix my lid closing issue, and that went great. but now when i go to reinstall my broadcom i get this error. Code: Reading package lists... Done Building dependency tree Reading state information... Done bcmwl-kernel-source is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. 1 not fully installed or removed. After this operation, 0B of additional disk space will be used. Setting up bcmwl-kernel-source (5.60.48.36+bdcom-0ubuntu3) ... Removing old bcmwl-5.60.48.36+bdcom DKMS files...
[Code].....
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Mar 24, 2011
I am running Red Hat with 2.6.18-194.8.1.el5PAE kernel version. I am trying to run encryptfs to encrypt a partition on my hard drive. One of the kernel modules necessary is the md5.ko. I noticed it wasn't loaded in when doing an lsmod. I tried running modprobe md5 and it fails to load:
[root@ ~]# /sbin/modprobe -v md5
insmod /lib/modules/2.6.18-194.8.1.el5PAE/kernel/crypto/md5.ko
FATAL: Error inserting md5 (/lib/modules/2.6.18-194.8.1.el5PAE/kernel/crypto/md5.ko): Invalid argument
I ran dmesg and grepped for md5, but I didn't see anything in there.
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Dec 4, 2009
I have installed Windows 7 followed by Fedora 11. Everytime I install Fedora 11 with Win 7, the first to boot, I get BOOTMGR missing. Later I used "df -h" command to see the disk file usage fdisk -l" to see the info regarding Disk Partitions. Went into the /boot/grub/menu.lst and modified the order. I set the partition where I find the bootmgr.exe.mui, there was another file named "memtest.exe.mui in the same file.
I navigated to the above said through Fedora 11. Located inside the Win 7 installed directory /boot/en-US/
When I changed the menu.lst file, I get a new error Error 12: Invalid device requested when I tried to boot Win 7. Does that mean that Fedora 11 GRUB is not getting the bootmgr.exe.mui since its 2 levels inside the boot directory ??
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Jun 30, 2011
After updating from 11.3 to 11.4 the networkmanager stopped working for me. When I hover over the KDE NetworkManager icon it says Error: Invalid state. If I click it, it says Network Management disabled and checkboxes (Enable networking and enable wireless - both checked). I already tried removing /var/lib/NetworkManager/NetworkManager.state and restarting the network management (/etc/init.d/network restart). Also reinstalling the NetworkManager package.
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Mar 5, 2011
i downloaded baldurs gate II shadows of amn iso's, because i lost one of the CD's to the box, but anyways, I went to mount the third .ISO for installation, and BAM! my computer froze, so i waited five minutes, came back, and still frozen. shut it down for 20 minutes, pulled it back up, and it's got this error as follows; "Mount: mounting /dev/disk/by-uuid/65b0a6a-a366-435a-a086-58428cfe2bd1 on /root Failed: invalid argument
[code]...
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May 25, 2011
I have message: error 12: invalid device requested.It happen when i choose ubuntu partition. before this error message the netbook run perfectly with dual boot. ubuntu is 1st option winXP is 2nd option from the list(maybe grub ?) Since i want winxp as the 1st option instead ubuntu,i change the file /boot/grub/menu.lst. what exactly i change is just cut and copy the winxp part to above ubuntu part.
if i press 'e' in ubuntu show:
root (hd0,6)
kernel /boot/bla..bla.bla..
initrd /boot/bla..bla.bla..
[code]...
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Aug 26, 2010
i enabled LDAP authentication for group in apache2.2 is working fine. When i enabled sub group search using AuthLDAPSubGroupDepth 1 is showing error Invalid command 'AuthLDAPSubGroupDepth', perhaps misspelled or defined by a module not included in the server configuration here below the ldap coding for apache2 running in ubuntu 10.04
AuthzLDAPAuthoritative on
AuthType Basic
AuthName "xxxxx"
AuthBasicProvider ldap
AuthLDAPSubGroupDepth 1
[Code]...
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Aug 25, 2010
I have just started using Valgrind,which really is great. Most of the reported errors look kinda weird, though I can't really understand what's going on here, for example:
==00:00:02:52.033 7754== Invalid read of size 4
==00:00:02:52.033 7754== at 0x80B0987: MyCls::MyPrintf(long, char*, ...) (MyCls.cpp:270) ...
==00:00:02:52.033 7754== Address 0x47a5ee8 is 0 bytes after a block of size 296 alloc'd ...
==00:00:02:52.033 7754== by 0x809A6C1: ClsMain::taskRun(int, char**) (ClsMain.cpp:177)
==00:00:02:52.033 7754== by 0x816CFE8: main (main-C.cpp:2060)
==7754== ---- Attach to debugger ? --- [Return/N/n/Y/y/C/c] ---- Y
==00:00:02:57.410 7754== starting debugger with cmd: /usr/bin/gdb -nw /proc/7765/fd/1014 7765
GNU gdb Red Hat Linux (6.5-25.el5rh)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as
"i386-redhat-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1".
Attaching to program: /proc/7765/fd/1014, process 7765
MyCls::MyPrintf (this=0x47a5dc0, iPrm=3,
sMsg=0x6974320 "blablabla"...) at MyCls.cpp:270
270 cout<<endl<<"m_FilePtr="<<hex<<m_FilePtr<<dec<<endl;
Basically, Valgrind reported the "Invalid Read" error at line 270 of file MyCls.cpp, which is simply a cout of the m_FilePtr variable, which is a member variable of the MyCls class. It's a FILE* variable I use to write repeatedly on a text file. The address reported (0x47a5ee8) is 296 bytes after the "this" pointer (0x47a5dc0),as Valgrind correctly tells me but I honestly don't understand that. And of course, I need to read that variable, not only for the cout (indeed,the error is reported at every reading attempt). Besides, the application doesn't crash, but still I would like to understand if I really have to worry about this "error".
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