Ted Leung on the air
Ted Leung on the air: Open Source, Java, Python, and ...
Mon, 16 Jan 2006
How to recover crashed Linux volumes

Our Christmas day power outage finally ended happily. Recall that a Christmas day power outage corrupted an ext3 filesystem that was managed by the Linux LVM. e2retreive ran for almost 3 weeks and in the end was unable to actually recover any files. A bunch of other free/open source programs also failed to do the job.

My initial round of Googling turned up a pieces of software called Kernel by Nucelus Technologies. They offered a demo version of their software which would tell you if it could recover files, but not actually recover them (for that you had to cough up some money). Kernel runs on Windows, but there are versions for lots of operating systems. Given that I thought our problems were more due to LVM rather than ext3, I was a little skeptical that Kernel would be able to do much of anything. I'm glad that I was wrong. Kernel was able to recover all the files off of the disk (you better believe I paid), so we have all of our data back. The only thing I'm unhappy with is that Kernel didn't preserve the file dates, even though it was able to display the dates. Still, I'm very happy to have my data back, and Kernel definitely makes the recommended list. So if you have a corrupted ext3 partition under LVM, Kernel had a decent chance of working.

The Google research that I did has convinced me that using LVM is more dangerous than the convenience of it, so I'll definitely be reformatting the offending disk as plain old ext3.

[15:23] | [computers/operating_systems/linux] | # | TB | F | G | 3 Comments | Other blogs commenting on this post

Hm, MythTV distros use LVM by default, so as to handle video files with more speed, they say. Reading your post fills me with dread. Maybe I should avoid said file system?
Posted by Reid Ellis at Fri Jan 20 00:08:25 2006

You can subscribe to an RSS feed of the comments for this blog: RSS Feed for comments

Add a comment here:

You can use some HTML tags in the comment text:
To insert a URI, just type it -- no need to write an anchor tag.
Allowable html tags are: <a href>, <em>, <i>, <b>, <blockquote>, <br/>, <p>, <code>, <pre>, <cite>, <sub> and <sup>.

You can also use some Wiki style:
URI => [uri title]
<em> => _emphasized text_
<b> => *bold text*
Ordered list => consecutive lines starting spaces and an asterisk





Remember my info?

twl JPG


Ted Leung FOAF Explorer

I work at the Open Source Applications Foundation (OSAF).
The opinions expressed here are entirely my own, not those of my employer.

Creative Commons License
This work is licensed under a Creative Commons License.

Now available!
Professional XML Development with Apache Tools : Xerces, Xalan, FOP, Cocoon, Axis, Xindice
Technorati Profile
PGP Key Fingerprint
My del.icio.us Bookmarks
My Flickr Photos

RSS 2.0 xml GIF
Comments (RSS 2.0) xml GIF
Atom 0.3 feed
Feedburner'ed RSS feed

< January 2006 >
1 2 3 4 5 6 7
8 91011121314


Macintosh Tips and Tricks

Blogs nearby
geourl PNG

/ (1567)
  books/ (33)
  computers/ (62)
    hardware/ (15)
    internet/ (58)
      mail/ (11)
      microcontent/ (58)
      weblogs/ (174)
        pyblosxom/ (36)
      www/ (25)
    open_source/ (145)
      asf/ (53)
      osaf/ (32)
        chandler/ (35)
        cosmo/ (1)
    operating_systems/ (16)
      linux/ (9)
        debian/ (15)
        ubuntu/ (2)
      macosx/ (101)
        tips/ (25)
      windows_xp/ (4)
    programming/ (156)
      clr/ (1)
      dotnet/ (13)
      java/ (71)
        eclipse/ (22)
      lisp/ (34)
      python/ (86)
      smalltalk/ (4)
      xml/ (18)
    research/ (1)
    security/ (4)
    wireless/ (1)
  culture/ (10)
    film/ (8)
    music/ (6)
  education/ (13)
  family/ (17)
  gadgets/ (24)
  misc/ (47)
  people/ (18)
  photography/ (25)
    pictures/ (12)
  places/ (3)
    us/ (0)
      wa/ (2)
        bainbridge_island/ (17)
        seattle/ (13)
  skating/ (6)
  society/ (20)

[Valid RSS]

del.icio.us linkblog



Listed on BlogShares

Locations of visitors to this page
Where are visitors to this page?

pyblosxom GIF