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Operating Systems AIX Exportvg/importvg causes corrupt LV Control Block Post 302849635 by MichaelFelt on Monday 2nd of September 2013 04:24:50 PM
Old 09-02-2013
exportvg should not be changing the VGDA in anyway, in fact it can be done with the disks of the volume group inactive.

I think something had happened to your LVCB before hand.

Consider the following command sequence. This disk is active, but the commands should give (nearly) the same output (there may be in the VGDA whether the VGDA is active or not).

The tail command is to show that the -dt options shows how all PP are mapped.

p.s. My prompt is not #, but I have performed an su to root so my euid is 0

hdisk1          00cbe32e3ea9f4d2                    vgData          active      
hdisk0          005d858f5e3e41d2                    rootvg          active      
hdisk2          005d858fdba3ba0e                    vgBackup                    
hdisk3          005d858f9b15ace8                    vgITDS          active      
michael@x054:[/home/michael]lquerypv -p 005d858f5e3e41d2 -N hdisk0 -t | more
PP Size:        26
PV State:       1
Total PPs:      542
Alloc PPs:      252
Total VGDAs:    2
HOT SPARE:      0
Beg PSN:        4352
michael@x054:[/home/michael]lquerypv -p 005d858f5e3e41d2 -N hdisk0 -dt | tail
PVMAP:  005d858f5e3e41d2:533  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   
PVMAP:  005d858f5e3e41d2:534  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   
PVMAP:  005d858f5e3e41d2:535  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   
PVMAP:  005d858f5e3e41d2:536  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   
PVMAP:  005d858f5e3e41d2:537  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   
PVMAP:  005d858f5e3e41d2:538  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   
PVMAP:  005d858f5e3e41d2:539  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   
PVMAP:  005d858f5e3e41d2:540  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   
PVMAP:  005d858f5e3e41d2:541  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   
PVMAP:  005d858f5e3e41d2:542  0 ODMtype  0000000000000000.0   0     0000000000000000:0    0000000000000000:0   

Question: do you get the same issue when you su to root (is there perhaps an authority not passing when using sudo?)

---------- Post updated at 10:24 PM ---------- Previous update was at 10:23 PM ----------

Should have read the bottom line. So I guess you can ignore my reply. Smilie
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ppmtosixel(1)                                                 General Commands Manual                                                ppmtosixel(1)

ppmtosixel - convert a portable pixmap into DEC sixel format SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC LJ250 color inkjet printer. If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file. OPTIONS
-raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com- pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni- tude larger than a compressed file and prints much slower. -margin If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci- fied, a 1.5 inch left margin will offset the image. PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?. BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation. SEE ALSO
ppm(5) AUTHOR
Copyright (C) 1991 by Rick Vinci. 26 April 1991 ppmtosixel(1)

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