[linux-lvm] pvdisplay/lvdisplay discrepancy
Aran Cox
spin at avalon.net
Fri Dec 6 23:48:02 UTC 2002
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"
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