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Re: [Bug-ddrescue] Suggestion for ddrescue in _seriously hosed filesyste

From: Antonio Diaz Diaz
Subject: Re: [Bug-ddrescue] Suggestion for ddrescue in _seriously hosed filesystem_ environment
Date: Wed, 29 Apr 2015 17:40:19 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv: Gecko/20070601 SeaMonkey/1.1.2

Hello Nathan,

Nathan Neulinger wrote:
If you are using ddrescue against a filesystem (to recover raw file contents) - there is a scenario where the current behavior doesn't handle things well - when the filesystem is hosed to the point of causing ddrescue to be killed with segfaults.

Do you mean recovering a file from a damaged filesystem (mounted read-only I hope), as in the following command?

  ddrescue /somedir/somefile outfile logfile

Neither ddrescue nor the kernel should segfault in such scenario. What versions of ddrescue and OS are you running? What type of filesystem?

I'd like to see two (what I see as probably relatively simple) improvements to alleviate this:

They are not so simple. So I would like to be sure that they are useful before trying to implemente them.

1. Implement a "--log-every-time" option - you could use "-e" it looks like.

The '-e' option is already taken since version 0.1 (2004). You are using GNU ddrescue. Aren't you?

Best regards,

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