Re: Migrating data off a failing drive

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Suvayu Ali <fatkasuvayu+linux <at> gmail.com> writes:

> ...
Some additional hints:
- one more link to read
  https://help.ubuntu.com/community/DataRecovery
- unmount source when doing dd-type operation
- consider destination size when doing dd-type operation (it must be equal or
  greater than source)
  Note:
  /* quote */
  If the destination is larger than the source, the filesystem won't know this
  and will function as if the lvol did not change size. To get the filesystem
  to use the additional space, run resizing utility (e.g. gparted, resize2fs)
  on the raw device file for the destination. Then you can mount the lvol.
  /* end quote */
- -v = verbose output; capture this output to a file with redirection (e.g.
       'tee') while still seeing your primary output
- dd_rescue with -r option
  /* quote */
  When running dd_rescue – don’t forget the “-r” option! (reverse copy)
  What you can do is this – try it running dd_rescue the “normal” way and then
  – when it finishes (or hangs, or whatever) and you have bad blocks, try
  running the same command again with the “-r” option. It will take the same
  drive, the same output file, the same bad-block file, etc – and do the whole
  job again filling in the places where it was able to get good data.
  /* end quote */

JB
 




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