General :: Mounting Lvm2 - Copy Some Files From Another Harddisk

Mar 8, 2010

I have just reinstalled Centos 5.3 on a new harddisk. I would like to copy some files from another harddisk which is also install with Centos 5.3. I have followed some guide in the internet but failed to mount the old harddisk. I got "unknown filesystem type 'lvm2pv'" error when trying to mount /dev/sdb2.

Details:

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Oct 7, 2009

I am using virtualbox to run windows xp.is there a way to access the harddisk occupied by linux and copy the information to the virtual memory in windows xp

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Fedora :: Error Mounting External USB HardDisk?

Feb 2, 2010

I've right now installed Fedora 12 in my laptop, and when I try to acces my external USB Woxter HardDisk I get this error:

Error mounting: mount exited with exit code 12: Failed to read last sector (1953525103): Invalid argument
HINTS: Either the volume is a RAID/LDM but it wasn't setup yet,
or it was not setup correctly (e.g. by not using mdadm --build ...),

[code]....

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Ubuntu Servers :: Slow LVM2 Lv-to-lv Copy

Jul 16, 2011

I've got three disks together on a *home* server that constitute four LVs.The two are the root and swap LVs installed by the Ubuntu 10.04.2 LTS installer on the OS drive (250 GB VG: Beta). The third & fourth LVs I made of two physical volumes (640 GB and 200 GB VG: Data) and mounted each inside /torrent. All are ext4.

I'm migrating lots of large files from /home to inside of /torrent, but I'm seeing EXTREMELY slow speeds (700KB/s).I'll admit this is my first time using LVM, and I tried it only because of the numerous smaller drives I have sitting around that weren't getting used. I didn't expect such a large drop in speed.

Here's a more technical review of the setup:

Code:

me@Beta:~$ sudo pvdisplay
[sudo] password for me:
--- Physical volume ---
PV Name /dev/sdb
VG Name Data

[code]....

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Jul 9, 2011

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Jan 20, 2011

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My current plan so I won't have to reinstall my system is booting from a Ubuntu CD (or USB stick, whatever) and doing

Code:
dd if=/dev/sda of=/dev/sdb

(If sdb happens to be a few megabytes smaller it doesn't matter, the last partition is not important)

Now my questions:

1. Is this going to work? Is it a bad idea?

2. Should I use any parameters for dd, for performance? Like setting bs (or something) to a bit smaller than the both HDD's (equal) cache size?

If that matters, the hdd contains both NTFS, ext3/4 and reiserfs partitions. I use grub to boot Ubuntu, WinXP and Win7.

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I understand I can mount the ISO image using something like this:

mount -ro loop /path/to/image.iso /mnt

but then, which would be the best way to get a copy exact of what I see underneath /mnt in to /distro/fedora ?

cp, tar, clobber?

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General :: Dd Copy - Hard Drive Clone Fails When Mounting Root Androotblock - /newroot Failed

Oct 27, 2010

I am trying to replace an old, smaller, and dying laptop hard drive with a newer one, using a USB external drive. I first tried cloning disk to disk with Clonezilla, but it failed after cloning my root, swap, and /home directories it froze when it tried to reinstall grub. After 2x trying, I switched to dd, which I have never really used (I am fairly new to Linux in general). The actual command I used was:

Quote:

dd if=/dev/sda of=/dev/sdb bs=4096 conv=notrunc,noerror

All seemed ok and after approximately 2 hours my 80GB drive had been cloned onto my new 250GB, with dd giving what appeared to be a satisfactory closure summary. I tried to mount and access the drive from my external USB enclosure but could not view it, though the data is there, I believe, as the size and bytes show... The error that Dolphin is giving me is:

Quote:

error - wrong fstype, bad option, bad superblock on /dev/sdb1 Missing codepage or helper program or other error. When I installed the new drive directly into my laptop, it begins to boot (Sabayon 5.4, 2.6.35 kernel) but almost immediately I get (handwritten down, but this is close):

Quote:

detected real_root
mounting /dev/sda1 on /newroot failed: input/output error
!! Could not mount specified ROOT, try again
!! Could not find the root block device in .

[code]....

I am assuming that my issue has something to do with grub, and maybe specific UUIDs that don't match (?) but I'm not really certain. I have both Grub Legacy 0.9x and the newer Grub 2 installed (Sabayon is already moving over) but I still boot with Legacy, not with the new 2, as I don't know how to switch, and am not sure if I should yet. I thought that dd copied bit for bit, and I added the noerror´ just to try to get it all transferred, so I don't know what went wrong exactly, though something seems wrong with grub and the bootloader, I guess...

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Feb 1, 2011

When i installed ubuntu. I made a seperate partition so that i could copy an ISO image onto it of an up-to-date version of ubuntu. I wanted to then boot the ISO up so i could install the version that way.I've already tried doing it through the update manager but it'll download, almost be done with installing and it freezes on me. so i figured this would be easier. However i do not know how to gain access to the other partition to copy the ISO image.

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Jun 8, 2010

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Jan 28, 2010

Long story short I have windows 7 installed and in an attempt to install ubuntu the existing partition table was erased. What's the safest method to mount an ntfs partition and back up files? Or even write a table to get back into windows to back files up?

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Mar 15, 2010

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May 9, 2010

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Apr 18, 2010

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Jun 18, 2011

how can I clone my installed ubuntu to a new harddisk? with 32bit ubuntu I have used:tar cvpzf -> create a tar file on my external nas system. after that I have done a restore tar xvpfz - worked with 32 bit.

Alternative I have mounted both disks and via another linux partition I have used:
cp -rvbdR /source/* /target

both methodes worked with ubuntu 32 bit. With 64 bit ubuntu I can NOT get it to work. error message after booting the clone: /var/lib/gdm/.ICEauthoriy ..

I can see that /source/var/lib/gdm has different rights as /target - will be part of the problem.
This did not happen with the 32 bit ubuntu - but why ?

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Sep 2, 2010

Possible Duplicate: Linux equivalent to robocopy? I have two websites - one is basically a development version and the other is a production version of the same site. So I'd like to be able to merge the changes made to the development site based on the modified date of the files. Is this possible with the 'cp' command?

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Jan 19, 2010

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as ;

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Dec 10, 2010

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Dec 22, 2009

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Jun 20, 2011

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I have No possibility to use rsync or any other protocol No possibility to use passphrase free certificates (but have a certificate with a passphrase) A list of files to transfer and a list with the destination path of the files on the other server The files are spread out over a lot of directories, and not all the files in the directories I want to copy If possible I would like to gzip and ungzip transparently to save bandwidth!

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Suppose there is a directory named mydir containing ...
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Makefile
a
b
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