How can I retrieve the block number(s) of a certain file in a file system (the blocks the file is using on the harddisc)?
I'm using the gentoo linux based SystemRescueCD, so I got plenty of tools installed which might get that information for me.
for solution how to find physical position/block of specified file on FAT32 partition. I have damaged hdd (I can mount partition and I see files) and im using gddrescue to make 1:1 copy, but i need only specified file. So I would like use gddrescue with -i pos switch, but I dont know how to get that position for specified file.
Code:
-i pos
--input-position=pos
[code]...
I've noticed since day one of installing openSUSE that my hard drive makes faint clicking noises quite frequently. At first I thought my drive was bad but after doing an extensive SMART diagnostics test (Passed) and researching on internet I've found that the clicking is actually the heads of my hard drive being put to the rest position via openSUSE's power management. I've confirmed this because if I run this command:
Code:
sudo /sbin/hdparm -B 254 /dev/sda
My hard drive will no longer make any noises and will run silently until the next reboot, as it keeps the hard drive spinning constantly. I'm basically asking (Because I'm paranoid) if the frequent hard drive head movement will reduce the hard drive's life span? I want to find out because I recently upgraded from a 160 GB 5400 rpm WD Scorpio Blue hard drive to a 500 GB 7200 rpm WD Scorpio Black. My old hard drive did not make as nearly as much clicking noises as my new one does, but the clicking can also be heard in Windows (Though not as frequent).
I have an ext2 formatted disk (linux) and I need to reformat it to NTFS (windows). Problem is, I have to retain the 750 GB of data that's on the disk. What's the quickest (least number of steps) way to accomplish this? I do have a spare 1TB disk now to help with the transfer.
Background.I've been using XBMC Live for a couple of years, but with all the problems I've been having lately, I'm moving over to the Windows version. Unfortunately all of my media is stored on an ext2 formatted disk (not the same disk as the OS disk).I was thinking of loading up an Ubuntu live disk, and installing ntfs-config. Mount my secondary disk (already formatted NTFS), transfer the files, reformat the original drive, load windows and transfer the files back.
I'm working on a midrange NAS system basically running on Linux and I got to do some great testing today. The step-by-step lead me to using fsdb to corrupt the magic number on a file system in order to corrupt it / test the script that should fix it.
View 1 Replies View RelatedI need to monitor file reads&writes by all the apps. I have found a kernel feature /proc/sys/vm/block_dump. But it only gives me block numbers while i would like to know file names. How can i convert these block numbers to file names (if the blocks belong to a file, of course)?
View 3 Replies View RelatedThe external hard drive which contains all my photos and where I backed-up all my important documents is no longer recognized. It is a three month old 500GB Iomage Prestige Desktop Hard Drive.When I plug it in, it is recognised as a USB device, because it shows up when I type lsusb, but dmesg gives this error message.
[19712.013250] usb 2-2: new high speed USB device using ehci_hcd and address 21
[19712.145347] usb 2-2: configuration #1 chosen from 1 choice
[19712.147214] scsi25 : SCSI emulation for USB Mass Storage devices
[code]....
I popped the disk out of the casing put it on a SATA connect internally and then tried the file recovery programs testdisk/photorec and SpinRite, but both failed because they couldn't recognize the external hard disk.
algorithm:breada
input: file system block number for immediate read
file system block number for asynchronous read
output:buffer containing data for immediate read {
if(first block not in cache) {
get buffer for first block
if(buffer data not valid)
initiate disk read }
if(second block not in cache) {
get buffer for second block)
if(buffer data valid) //line 1
release buffer else
initiate disk read //line 2 }
if(first block was originally in cache) //line 3 {
read first block
return buffer }
sleep (event first buffer contains valid data)
return buffer }
Here is an algorithm for block read algorithm. I have problem in
line 1: If buffer data is valid why is it releasing the buffer?
line 2: If buffer data valid why is it initiating disk read. It should have read directly from buffer?
line 3: It should be the first condition as if it is there in cache then it should return it without delay?
I have WD external hdd (80GB) formatted with fat32. I was using this hdd to transfer the data from computer A (LINUX, RH9) to computer B (Win7).
I was keep copying and deleting the data in the WD hdd during the data transfer because the amount to transfer is more than 300GB.
After doing this several times (and the WD drive was emptied), comp. A said the disk is full. I checked using 'df' and it was really full but 'ls -la' shows that there is no data in it.
I checked it in comp. B, and it showed empty. I tried to format in comp. A using 'mkdosfs -F 32 /dev/xxx# (block#)', but showed an error message like below.
'Warning: block count mismatch: found 78xxxxx but assuming 0'.
I found a similar situation in this forum metioning 'possible damaged linux kernel (not exactly same expression though)', so I re-installed linux in comp. A, but the problem was not solved.
1. why the disk info. is showed differently in linux and win7
2. why I cannot format it
I have to locate and display the findme file on an XFS file system but the file is located on a second hard drive. The hard drives area number sda1 and sdb1know to change a directory, you use the cd command but I cannot remember how to do it for another hard drive. I tried cd /dev/sdb1 but I know that is not correct
View 1 Replies View RelatedI installed ubuntu off of my laptop and put the Ubunto file system on a 1TB hard drive off of a drive enclosure. Now the only way I can access Windows is if the drive is still connected to the laptop. NO EXTERNAL HD No BOOT MENU when I boot up.
View 4 Replies View RelatedI got a dell inspiron 1501 laptop with a 80Gb sata drive what is the best solution to add data storage space for someone that love to have multiples operating systems at hand Note: I use mostly linux so I won't need to change my laptop for many years maybe ...
View 2 Replies View RelatedMy parents bought a new hard drive for a laptop that I've owned for several years. It's much larger than the current one, so I plan on splitting it up to dual boot it with Ubuntu.I have no problem with partitioning a drive (I always keep a LiveCD handy), but my question is this: how can I go about moving the existing partition to the new drive? This is a laptop, so I can't simply plug the new drive into another slot.
Also, even if I manage to move it, will Windows still work on the new drive in a larger partition? I've had this laptop for quite a while, and I've lost the recovery discs that came with it a long time ago. I also have a lot of software without CDs to reinstall them with. This makes not reinstalling Windows a high priority.
I'd like to improve my computer's performance by storing files' system location (e.g.: /home/user/speech.odt) and HD position (head, sector, etc) and do the computer use that info from ram memory.I have a directory with several files and when I cd and ls it, it takes a while to the computer answer me. Plus, it would return immidiate find results.
View 2 Replies View RelatedI have never used rsync before, only DD. But from what I have been reading, rsync is better becasue it will basically mirror your hard drive, thus being able to run the cloned software from the new hard drive. My problem is I do not know what is the best commands or even the basic commands to use in rsync. I am trying to make an image from a external hard drive to a usb drive. That way my chances of messing up he original software is not as risky becasue I'll just restore the image onto another hard drive. Does anyone know the best script to have rsync make an image file of a hard drive and place it on a usb drive and then restore it?
View 8 Replies View RelatedI had a drive that kept kernel panic'ing so my data center recommended using the spare hard drive to reinstall OS on, and import the data from the old drive. (they checked the hardware, it wasn't the hardware) The new install is done, and I need to mount the old drive and get backups off it since my data center does not provide management whatsoever.
It's the same OS on both (Cent OS 5.4 32-bit) I'm an advanced user on windows, but linux gets me. I can ssh in, do basic stuff like setup IP ranges and restart services. I normally navigate the box through SFTP so I have a gui. WHM shows me my drives as such
Found Disk: hda
Found Disk: sdb
so I'm assuming SDB is my old drive and the drive I need to access. I attempted to follow instructions on
cyberciti.biz/faq/freebsd-adding-second-hard-disk-howto/
but I'm assuming FreeBSD would work differently and I wasn't totally sure what the labels of the file systems should be.
I'm using vim 7.2.330 on 64 bit ubuntu 10.04, sometime in the last week every time I reopen a file it places the cursor at the top of the file. I can see in ~/.viminfo where it's saving the last position used, but it doesn't seem to be honoring it.
View 1 Replies View RelatedI am trying to create an empty file based on the remaining hard disk space. The problem is that when I create a file that is 1 GB large, the df command shows the remaining space to be only 12 kb smaller than it was before the file was created.
someone@here:/tmp/delete# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 36827144 5031592 29924788 15% /
[code]....
I am new to Linux ,i did one project in windows which will block the thumb drive with respect to serial number(Device instance ID) of the device.i am planning to do the same project in Linux using c/c++.I am very new to Linux,there is no drive letter for thumb drives we insert into Linux OS.How to get Drive letter and how to get Device instance id of thumb drives please help me get some clues.please provide me any tutorial or any links .w if have any other clues to block devices with respect "block list" and "allow device list".if the serial number in block list it has to block if serial number in allow device list it has to allow thumb drive to access.
View 3 Replies View RelatedWhat is the vim command I have to use when I want to perform a text substitution not on the current line or on the whole document or on lines from number x to number y but just from the current cursor position down to the end (or up to the beginning) of the document?
View 1 Replies View Relatedcan I change the ECC code for a block of a file stored on a flash drive by any means ? of a file stored on a HDD (though I don't think there would be a difference between the two)Maybe , through some hardware interrupts or anything like that?Also if possible I need the solution to be in C/C++.
View 4 Replies View Relatedi need to get the hard disk serial number of my machine using a C++ program.
View 11 Replies View RelatedI've been setting up a number of netbooks for friends in a group I belong to. I am installing Ubuntu 10.04 and/or Linux Mint 9 on all of the netbooks. The netbooks are all identical. Everything has seemed OK until yesterday. I tried to set the label on the new disk using: # e2label /dev/sda newlabel The error is Bad magic number in super-block while trying to open /dev/sda. Couldn't find valid filesystem superblock.
But the filesystem seems fine. It is mounted. It booted up without errors. But all the e2* tools give the same error. So I checked another netbook with an identical fresh install of Ubuntu 10.04 32-bit. It gives the same error although the system appears to work fine. Next I went and checked my own netbook. It is identical except I swapped out the HDD for an OCZ Vertex SSD. I aligned the partitions and prepared that drive carefully. It seems to work great. But when I ran e2label on it I got the same error message.
All the other installs are fresh, clean, standard installs where I let the installer use the whole disk and do the partitioning automatically. All are using ext4. I did a fresh install of Linux Mint 9 and it has the same error as Ubuntu 10.04. Kubuntu 10.04 on my desktop gives the same error too.
I have a Ubuntu file server and it makes the oddest sound. I can hear a HD making a "breathing" type sound, like the disc spins up for a moment and then cycles down. It happens on a very regular basis, about every 20 seconds or so. I've run every HD diagnostic I can think of, and I can't figure out what might be causing it.
The system runs Ubuntu 11.04, with a OS HD & 4 discs configured in a RAID5 array.
Is this something I should be worried about? Is there any utility I can run to see why the disc keeps spinning up?
EDIT: Here's a link to a sound recording of the sound.
I have one hard disk (call her HDA) that contains nothing but a single ext4 partition containing a backup of all my important data. Last night I did a clean install of Ubuntu 10.10 on my primary hard disk (call her HDB) and from there proceeded to upgrade directly to Ubuntu 11.04 upgrade. In 10.10, I was able to read HDA just fine. However after the upgrade, I can no longer mount this drive. When mounting from file browser:
Code:
Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sda,missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so The end of dmesg said the following:
Code:
dmesg | tail
[ 82.130904] EXT4-fs (sda): bad geometry: block count 122096646 exceeds size of device (122096381 blocks)
my hard disk has a block count greater than the size of my device. I've done my background searching on this and tried a command line utility I've never heard of before:
Code:
# sudo e2fsck /dev/sda
e2fsck 1.41.14 (22-Dec-2010)
The filesystem size (according to the superblock) is 122096646 blocks
The physical size of the device is 122096381 blocks
[code]....
this is as far as I've gotten. This drive holds over a decade's worth of work for me and is extremely valuable. I really didn't think that the Ubuntu upgrade process would mess with this drive, seeing as the Ubuntu install was contained on an entirely different drive. What is it that I need to do to restore my drive to working status?
I read this thread but
Code:
anisha@linux-uitj:~> su
Password:
[code]...
I have a SATA drive that worked fine. Then I installed two more hard drives into my system. When these hard drives are installed, if I try to access the SATA drive in Linux, it will start lightly clicking and then the drive will become unavailable. If I power on the machine without the other two hard drives then it works fine. What could be causing this to happen? I don't think it's heat because the two hard drives are far away from the SATA drive.
View 1 Replies View RelatedI have a Linux (Kubuntu) system with a large (~20Gb) file which I would like to mess with. Specifically, I want to copy the entire contents of another large file (~12Gb) to the middle of this file, and keep the bits of the file which are not overwritten.This is what I want to happen, with the text between the pipes representing file contents:Before:
outfile: |abcdefghijklmnopqrstuvwxyz|
infile: |123456789|
After:
[code]....
I'm looking for a way to insert the number of lines in a file to the start of the aformentioned file. This should be simple but as I am not used to scripts in Linux, I am finding it tough going. I can find the number of lines in a file easily enough via
filesize=$(awk 'END {print NR}' $1)
but as for inserting this into the first line, i'm failing to do so. I've tried some of the other approaches on these forums but none so far have been able to do so.
I've tried:
sed '1i$filesize' $1
but sed i requires a string, not a variable so no go I've also tried:
mv "$1" "${1}.bak" 2>/dev/null || touch "${1}.bak"
cat $filesize "${1}.bak" >"$1"
but again with no luck as cat seems to need an input stream Just to recap, i want to insert a line at the start of a given file that holds the number of lines the original file has.
ie the file:
a
b
c
d
e
should become:
5
a
b
c
[code].....
Is there an ssh or sshd parameter that can be set to block out a user after a set number of attempts tp login ?
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