[linux-lvm] pvdisplay/lvdisplay discrepancy

[linux-lvm] pvdisplay/lvdisplay discrepancy

[Aran Cox]

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"

Re: [linux-lvm] pvdisplay/lvdisplay discrepancy

[Heinz J . Mauelshagen]

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 --


On Fri, Dec 06, 2002 at 10:28:18PM -0600, Aran Cox wrote:
> 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
<SNIP>
> "/dev/sdb"
> 
> 
> 
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

*** 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
Mauelshagen@Sistina.com                           +49 2626 141200
                                                       FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Re: [linux-lvm] pvdisplay/lvdisplay discrepancy

[Aran Cox]

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

Thanks again,
Aran

On Mon, 2002-12-09 at 04:46, Heinz J . Mauelshagen wrote:
> 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 --
> 
> 
> On Fri, Dec 06, 2002 at 10:28:18PM -0600, Aran Cox wrote:
> > 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
> <SNIP>
> > "/dev/sdb"
> > 
> > 
> > 
> > 
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm@sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> 
> *** 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
> Mauelshagen@Sistina.com                           +49 2626 141200
>                                                        FAX 924446
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
-- 
Aran Cox <acox@ia.primustel.com>
Primus Telecommunications - Network Engineering

Re: [linux-lvm] pvdisplay/lvdisplay discrepancy

[Heinz J . Mauelshagen]

On Mon, Dec 09, 2002 at 10:19:07AM -0600, Aran Cox wrote:
> Thanks for sending me those binaries but unfortunately they produce the
> same output.  

Odd :(

Then send your metadata to me directly (mge@sistina.com) 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 --


> 
> Thanks again,
> Aran
> 
> On Mon, 2002-12-09 at 04:46, Heinz J . Mauelshagen wrote:
> > 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 --
> > 
> > 
> > On Fri, Dec 06, 2002 at 10:28:18PM -0600, Aran Cox wrote:
> > > 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
> > <SNIP>
> > > "/dev/sdb"
> > > 
> > > 
> > > 
> > > 
> > > _______________________________________________
> > > linux-lvm mailing list
> > > linux-lvm@sistina.com
> > > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> > 
> > *** Software bugs are stupid.
> >     Nevertheless it needs not so stupid people to solve them ***
> > 
> > linux-lvm mailing list
> > linux-lvm@sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> -- 
> Aran Cox <acox@ia.primustel.com>
> Primus Telecommunications - Network Engineering
> 
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

*** 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
Mauelshagen@Sistina.com                           +49 2626 141200
                                                       FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-