junk characters in lvmtab!!

[Sprint Unix Team]

How do i get rid of the junk characters in the lvmtab file...
---------------------------------------------------------
#strings /etc/lvmtab
/dev/vg00
"'!8
/dev/dsk/c2t2d0
/dev/dsk/c1t2d0
/dev/vg01
"'!9
/dev/dsk/c1t0d0
/dev/dsk/c2t0d0
/ >

[Jeff Machols]

first make a backup of it. Then remove the file and run

#vgscan

This will re-create the lvmtab

[nancy rippey]

You can mv /etc/lvmtab and run vgscan -a to recreate the lvmtab. I would suggest reading the man page for vgscan and looking at the warnings associated with vgscan. I have never had any problems recreating the lvmtab though.

Hope this helps

[harry d brown jr]

YOU DON'T!!!


It's SUPPOSED to be that way!

To read it, try: strings -a /etc/lvmtab


live free or die
harry

[A. Clay Stephenson]

Hi:

This is almost certainly okay. You have to remember how strings decides that something is a string. If it finds 3 or more consecutive printable ASCII characters, it considers that a string. It appears that you just happened to get lucky and have some binary data that encoded as printable ASCII.

Regards, Clay

[T. M. Louah]

to add to above, I suggest to compare strings command to other machines with checksum:
root:> whence strings
/usr/bin/strings
root:> cksum /usr/bin/strings
411063913 16384 /usr/bin/strings
and root:> what /usr/bin/strings
/usr/bin/strings:
$Revision: B.11.11_LR
Wed Nov 8 20:11:28 PST 2000 $
compare there may be a corruption in strings binaries.
g'd luck
t++

[Sridhar Bhaskarla]

Hi,

It is not an ascii file. So, you don't have to worry about the junk characters. It gives some readable format with strings.

So, you don't need do to vgscans etc., etc.,. You are going to get them back.

-Sri

[Bill McNAMARA_1]

As the guys mention it aint junk.
strings /stand/vmunix for lots of junk! (pipe through more or course)

If you vgscan after mv'ing your /etc/lvmtab to /etc/lvmtab.bak for example:

You have:
#strings /etc/lvmtab.bak
/dev/vg00
"'!8
/dev/dsk/c2t2d0
/dev/dsk/c1t2d0
/dev/vg01
"'!9
/dev/dsk/c1t0d0
/dev/dsk/c2t0d0

--------
#strings /etc/lvmtab
/dev/vg00
/dev/dsk/c1t2d0 (OH OH!!)
/dev/dsk/c2t2d0
/dev/vg01
/dev/dsk/c1t0d0
/dev/dsk/c2t0d0

Which you don't want..
To repair I guess it's alt link on some disk array)

vgreduce vg00 /dev/dsk/c1t2d0

#strings /etc/lvmtab
/dev/vg00
/dev/dsk/c2t2d0
/dev/vg01
/dev/dsk/c1t0d0
/dev/dsk/c2t0d0

vgextend vg00 /dev/dsk/c1t2d0

#strings /etc/lvmtab
/dev/vg00
/dev/dsk/c2t2d0
/dev/dsk/c1t2d0
/dev/vg01
/dev/dsk/c1t0d0
/dev/dsk/c2t0d0