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

Linda A. Walsh xfs at tlinx.org
Wed Jun 30 11:21:02 CDT 2010


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 few
> 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...
> 
> *sigh*
> -l
> 
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