[Summary+Q} salvage: what do the tag files in lost+found mean

From: Gerhard Nolte <gnolte_at_gwdg.de>
Date: Tue, 07 Apr 1998 17:13:40 +0200

Hi Managers,

Sorry, if I waste bandwidth but I got problems with my
mailer end of last week so I repost the summary and Question once more.

I asked:

>
> I tried to rescue an advfs doemain with one dead disk.
> The salvage utility restored a lot of stuff including
> in a lost+found directory a lot of tag_files, I think corresponding to
> rescued files like
>
> # find . -name he10hf.cfg
> ./temp1/mlewere/hehf/he10hf/he10hf.cfg
> ./temp1.lost+found/tag_4578/he10hf.cfg
>
>
> What do the tag files mean? Are they important?

Thank's to

kschu_at_fnal.gov
howardt_at_wiznet.net

Their responses are cited below.

Maybe I did not forlulate my question / problem as precise as it would
be necessary.
I tried to salvage one 4.2 GB disk of a two disk containing file domain.
The disk to salvage on was slightly bigger (4.3 GB). At the end the salvage
routine stopped with an error (disk full) while creating these tag files in
the temp1.lost+found directory.

What are these tag files for?
Did I recover everything possible?

Gerhard

Gerhard


Hi,

The tag numbers are equivalent to UFS inode numbers. The tag is the
file number. You can find the name of the file by using
/sbin/advfs/tag2name <tag#>...


          8< ---------------- cut here -------------------- >8
Greetings,

   I'm not sure what the tag files are used for, but any AdvFS filesystem
that you create uses them. You'll notice when you build a new AdvFS
filesystem that it creates the quota.group and quota.user files and the
.tags directory. I don't think it creates the lost+found directory until
it has to recover something.

   I'm not sure what they mean, but they are important.

   More later,
           Ken S.
-- 
===========================================================================
Ken Schumacher  < mailto:kschu_at_fnal.gov > (o) 630-840-4579 (f) 630-840-6345
Computing Div./OSS Dept.   Loc:FCC-239g    http://www-oss.fnal.gov/~kschu/ 
   
Fermi National Accelerator Lab; M/S 369; PO Box 500; Batavia, IL 60510-0500
===========================================================================
          8< ---------------- cut here -------------------- >8
Hi,
The tag numbers are equivalent to UFS inode numbers.  The tag is the
file number.  You can find the name of the file by using
/sbin/advfs/tag2name <tag#>...
Howard Thomas
howardt_at_wiznet.net
Received on Wed Apr 08 1998 - 10:47:03 NZST

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