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xfs_restore -R -- recovering a previous restore...does it work?

To: xfs-oss <xfs@xxxxxxxxxxx>
Subject: xfs_restore -R -- recovering a previous restore...does it work?
From: "Linda A. Walsh" <xfs@xxxxxxxxx>
Date: Wed, 30 Jun 2010 09:21:02 -0700
In-reply-to: <4C2B37D6.50801@xxxxxxxxx>
References: <4C2B37D6.50801@xxxxxxxxx>
User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: Gecko/20100228 Lightning/0.9 Thunderbird/ Mnenhy/
So why is this crashing?

I just had it happen again -- something killed off the window it was
executing in -- system didn't go down, but it got a hangup -- a
cleaner shutdown -- but it still doesn't recover.

Under what circumstances should this work?  Or does it work?

Linda A. Walsh wrote:
Due to another bug in lvm, my restore of this partition crashed after running a 
hours (takes alot longer to restore than to backup).

So I decided to use the "-R" option to Resume my previously left off dump:

# xfsrestore -R -p 180 -f /backups/Ishtar/torrents/torrents-100629-0-1611.dump .
  xfsrestore: using file dump (drive_simple) strategy
  xfsrestore: version 3.0.4 (dump format 3.0) - Running single-threaded
  xfsrestore: resuming restore previously begun Wed Jun 30 04:41:57 2010
  xfsrestore: examining media file 0
  xfsrestore: seeking past portion of media file already restored

Looks good so far!..Yup, and..

  xfsrestore: drive_simple.c:770: do_seek_mark: Assertion `nreadneeded64 <= ( ( 
intgen_t ) ( ( ( 1ull << ( ( unsigned long long )sizeof( intgen_t ) * ( unsigned 
long long )8 - ( 1ull + 1ull ))) - 1ull ) * 2ull + 1ull ))' failed.
  Aborted (core dumped)

Say what?  Um...is that supposed to be an error message?
Why can't it just tell me why "'nreadneeded64' > 0xbfffffffffffffd"
is 'bad', or what it means?

I have a feeling that the 'core dumped' message means that if I want my filesystem restored in the near future, I should
just restart...


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