pvdisplay/lvdisplay discrepancy

I've discovered that pvdisplay and lvdisplay seem to disagree on the exact location of some extents in a volume group on my system.

I am using stock 2.4.19 kernel with the lvm tools from the RPM package of the same name for RH7.3.

I'll show the output of the *display programs below but to summarize:
pvdisplay shows a small number of extents in /dev/main/var as being on hde4. lvdisplay of /dev/main/var shows them to be on sdb starting at 1064. pvdisplay of sdb shows those extents as free.

The /dev/main/var logical volume works fine: it's mounted and I just did a complete backup of it. I tried moving these extents but pvmove always fails. (See below.)

I get the impression that the extents are really on hde4 and that lvdisplay is wrong. (I just checked, I can pvmove other extents into sdb:1064, but this doesn't change lvdisplays output for /dev/main/var.) I can only assume that something became corrupt when I was using pvmove to shuffle some extents around recently. I'm not sure what to do about this but I'd like to fix it without a re-install, if anyone has any suggestions I'd appreciate it.

Thanks,
Aran

pvdisplay -v /dev/hde4
...

   01528 /dev/main/var             00252   12525944
   01529 /dev/main/var             00253   12534136
   01530 /dev/main/var             00254   12542328
   01531 /dev/main/var             00255   12550520
   01532 /dev/main/var             00256   12558712
   01533 /dev/main/var             00257   12566904

...

lvdisplay -v /dev/main/var
...

   00252 /dev/sdb                  01064  2118       0
   00253 /dev/sdb                  01065  2558       326
   00254 /dev/sdb                  01066  2048       0
   00255 /dev/sdb                  01067  2048       0
   00256 /dev/sdb                  01068  5558       23077
   00257 /dev/sdb                  01069  2685       102

...

pvdisplay -v /dev/sdb
01064 free
.....
01083 free

pvmove --verbose /dev/hde4:1528 /dev/hde2

...
pvmove -- starting to move extents away from physical volume "/dev/hde4" pvmove -- checking for enough free physical extents in "main" pvmove -- /dev/hde4 [PE 1528 [var [LE 252]] -> /dev/hde2 [PE 5398] [1/1] /dev/main/group::/dev/main/var: 2104 12525944, 2102 44228984 pvmove -- ERROR "Invalid argument" copying extent from "/dev/hde4"

pvmove -- ERROR "Invalid argument" remapping
pvmove -- ERROR "pv_move(): LE of LV remap" moving physical extents

pvmove --verbose /dev/sdb:1064 /dev/hde2:
...
pvmove -- checking destination physical volume names in command line pvmove -- ERROR: source physical extent 1064 invalid for physical volume "/dev/sdb"

Alan,

I am not sure if there's a difference between the Redhat package and our source causing this.
Are you able to reproduce this with stock LVM1.0.6 tools from www.sistina.com ? (have send pvdisplay and lvdisplay version 1.0.6 in private email to you to test this).

Get back to me if there is none and I'll have a look at your metadata.

Regards,
Heinz -- The LVM Guy --

<SNIP>

*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf Germany
[email protected] +49 2626 141200

                                                       FAX 924446

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Thanks for sending me those binaries but unfortunately they produce the same output.

Thanks again,
Aran

Aran Cox <[email protected]>
Primus Telecommunications - Network Engineering

Odd :(

Then send your metadata to me directly ([email protected]) for further investigation please.

Do a "dd if=/dev/$DEV of=$DEV.vgda count=4k bs=1k" where DEV is sdb, hde4 etc. (IOW: all you PVs belonging to the VG in question)

Archive these .vgda files with tar, bzip2 the archive and send that email-attached.

Regards,
Heinz -- The LVM Guy --

*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf Germany
[email protected] +49 2626 141200

                                                       FAX 924446

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-