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* RE: [linux-lvm] Can't pvcreate second partition...
@ 2001-05-07 22:13 Diehl, Jeffrey
  2001-05-07 23:08 ` AJ Lewis
  0 siblings, 1 reply; 11+ messages in thread
From: Diehl, Jeffrey @ 2001-05-07 22:13 UTC (permalink / raw)
  To: 'linux-lvm@sistina.com'

The problem with this theory is that I'm running 2.2.18, not 2.4.x.

Mike Diehl,
Network Monitoring Tool Devl.
284-3137
jdiehl@sandia.gov


> -----Original Message-----
> From: AJ Lewis [mailto:lewis@sistina.com]
> Sent: May 06, 2001 10:12 PM
> To: linux-lvm@sistina.com
> Subject: Re: [linux-lvm] Can't pvcreate second partition...
> 
> 
> On Sun, May 06, 2001 at 10:36:13AM -0700, Darren Young wrote:
> > Funny, I had the same issue at the same time. I
> > created /dev/hdb7 with fdisk and then a pvcreate just
> > after. pvcreate stated that the dev didn't exist.
> > Reboot fixed the problem. This could be a problem for
> > machines already up in production with small windows
> > for restarts. Why is this necessary and will it become
> > a "non-issue" in future releases? If this will be
> > necessary forever, then some simple planning would
> > solve the problem, at least on new installations. Any
> > way around this?
> 
> This appears to be an issue with fdisk and the 2.4.x series 
> Linux kernels.
> It has nothing to do with LVM as far as i can tell.  I've had 
> problems where
> I run fdisk to change the size of a partition, but linux 
> doesn't detect the
> change.  /proc/partitions is identical before and after i 
> attempt to write
> out the changes with fdisk.  I'm not sure what has caused this. Maybe
> someone else on the list knows?
> 
> I'll try to verify this when i get into work tomorrow.
> 
> Regards,
> -- 
> AJ Lewis
> Sistina Software Inc.                  Voice:  612-638-0500
> 1313 5th St SE, Suite 111              Fax:    612-638-0500
> Minneapolis, MN 55414                  E-Mail: lewis@sistina.com
> http://www.sistina.com
> 
> Current GPG fingerprint = 3B5F 6011 5216 76A5 2F6B  52A0 941E 
> 1261 0029 2648
> Get my key at: http://www.sistina.com/~lewis/gpgkey
>  (Unfortunately, the PKS-type keyservers do not work with 
> multiple sub-keys)
> 
> -----Begin Obligatory Humorous 
> Quote----------------------------------------
> Life's unfair - but root password helps!
> -----End Obligatory Humorous 
> Quote------------------------------------------
> 

^ permalink raw reply	[flat|nested] 11+ messages in thread
* RE: [linux-lvm] Can't pvcreate second partition...
@ 2001-05-07 23:14 Diehl, Jeffrey
  2001-05-08  3:23 ` Darren Young
  0 siblings, 1 reply; 11+ messages in thread
From: Diehl, Jeffrey @ 2001-05-07 23:14 UTC (permalink / raw)
  To: 'linux-lvm@sistina.com'

I wasn't trying to be rude, btw.  I had a friend tell me he had to bounce
his machine after a fdisk, but I have never had it happen myself.  This was
with a generic 2.2.x kernel, btw.

If you need/want details, I can call him and ask.

Thanx,
Mike Diehl,
Network Monitoring Tool Devl.
284-3137
jdiehl@sandia.gov


> -----Original Message-----
> From: AJ Lewis [mailto:lewis@sistina.com]
> Sent: May 07, 2001 5:08 PM
> To: linux-lvm@sistina.com
> Subject: Re: [linux-lvm] Can't pvcreate second partition...
> 
> 
> On Mon, May 07, 2001 at 04:13:38PM -0600, Diehl, Jeffrey wrote:
> > The problem with this theory is that I'm running 2.2.18, not 2.4.x.
> 
> Doh. I guess it isn't a 2.4x only problem then.  ;)  Very 
> odd.  Has anyone
> seen this when the LVM patches are not applied?
> 
> > > -----Original Message-----
> > > From: AJ Lewis [mailto:lewis@sistina.com]
> > > Sent: May 06, 2001 10:12 PM
> > > To: linux-lvm@sistina.com
> > > Subject: Re: [linux-lvm] Can't pvcreate second partition...
> > > 
> > > 
> > > On Sun, May 06, 2001 at 10:36:13AM -0700, Darren Young wrote:
> > > > Funny, I had the same issue at the same time. I
> > > > created /dev/hdb7 with fdisk and then a pvcreate just
> > > > after. pvcreate stated that the dev didn't exist.
> > > > Reboot fixed the problem. This could be a problem for
> > > > machines already up in production with small windows
> > > > for restarts. Why is this necessary and will it become
> > > > a "non-issue" in future releases? If this will be
> > > > necessary forever, then some simple planning would
> > > > solve the problem, at least on new installations. Any
> > > > way around this?
> > > 
> > > This appears to be an issue with fdisk and the 2.4.x series 
> > > Linux kernels.
> > > It has nothing to do with LVM as far as i can tell.  I've had 
> > > problems where
> > > I run fdisk to change the size of a partition, but linux 
> > > doesn't detect the
> > > change.  /proc/partitions is identical before and after i 
> > > attempt to write
> > > out the changes with fdisk.  I'm not sure what has caused 
> this. Maybe
> > > someone else on the list knows?
> > > 
> > > I'll try to verify this when i get into work tomorrow.
> > > 
> > > Regards,
> > > -- 
> > > AJ Lewis
> > > Sistina Software Inc.                  Voice:  612-638-0500
> > > 1313 5th St SE, Suite 111              Fax:    612-638-0500
> > > Minneapolis, MN 55414                  E-Mail: lewis@sistina.com
> > > http://www.sistina.com
> > > 
> > > Current GPG fingerprint = 3B5F 6011 5216 76A5 2F6B  52A0 941E 
> > > 1261 0029 2648
> > > Get my key at: http://www.sistina.com/~lewis/gpgkey
> > >  (Unfortunately, the PKS-type keyservers do not work with 
> > > multiple sub-keys)
> > > 
> > > -----Begin Obligatory Humorous 
> > > Quote----------------------------------------
> > > Life's unfair - but root password helps!
> > > -----End Obligatory Humorous 
> > > Quote------------------------------------------
> > > 
> > 
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm@sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> 
> -- 
> AJ Lewis
> Sistina Software Inc.                  Voice:  612-638-0500
> 1313 5th St SE, Suite 111              Fax:    612-638-0500
> Minneapolis, MN 55414                  E-Mail: lewis@sistina.com
> http://www.sistina.com
> 
> Current GPG fingerprint = 3B5F 6011 5216 76A5 2F6B  52A0 941E 
> 1261 0029 2648
> Get my key at: http://www.sistina.com/~lewis/gpgkey
>  (Unfortunately, the PKS-type keyservers do not work with 
> multiple sub-keys)
> 
> -----Begin Obligatory Humorous 
> Quote----------------------------------------
> A computer without a Microsoft operating system is like a dog 
> without bricks
> tied to its head.
> -----End Obligatory Humorous 
> Quote------------------------------------------
> 

^ permalink raw reply	[flat|nested] 11+ messages in thread
* RE: [linux-lvm] Can't pvcreate second partition...
@ 2001-05-07 22:12 Diehl, Jeffrey
  0 siblings, 0 replies; 11+ messages in thread
From: Diehl, Jeffrey @ 2001-05-07 22:12 UTC (permalink / raw)
  To: 'linux-lvm@sistina.com'

Yup, rebooting the server fixed it.  On the way home, it occured to me to
try that, but I've never had to boot a linux box after fdisking it.  Go
figure.  

Thanx,
Mike Diehl,
Network Monitoring Tool Devl.
284-3137
jdiehl@sandia.gov


> -----Original Message-----
> From: Glenn Shannon [mailto:glenn@gecpalau.com]
> Sent: May 04, 2001 5:14 PM
> To: linux-lvm@sistina.com
> Subject: Re: [linux-lvm] Can't pvcreate second partition...
> 
> 
> "Diehl, Jeffrey" wrote:
> 
> > Hi all.
> >
> > I'm new to LVM, but think I understad it, at least... <grin>
> >
> > Anyway, I'm trying to setup the first VG but can't seem to 
> build my PV's.
> > The transcript of what I did is at the bottom of this message.
> >
> > As you can see, I was able to do pvcreate on /dev/sdc2, but not on
> > /dev/sdc3.  These partitions are on a hardware raid5.
> >
> > Am I missing something?
> >
> > Thanx,
> > Mike Diehl,
> > Network Monitoring Tool Devl.
> > 284-3137
> > jdiehl@sandia.gov
> >
> > Script started on Fri May  4 07:33:56 2001
> > [root@filmore /mnt]# fdisk /dev/sdc
> >
> > The number of cylinders for this disk is set to 30945.
> > There is nothing wrong with that, but this is larger than 1024,
> > and could in certain setups cause problems with:
> > 1) software that runs at boot time (e.g., LILO)
> > 2) booting and partitioning software from other OSs
> >    (e.g., DOS FDISK, OS/2 FDISK)
> >
> > Command (m for help): p
> >
> > Disk /dev/sdc: 255 heads, 63 sectors, 30945 cylinders
> > Units = cylinders of 16065 * 512 bytes
> >
> >    Device Boot    Start       End    Blocks   Id  System
> > /dev/sdc1             1     15472 124278808+  8e  Unknown
> > /dev/sdc2         15473     15476     32130   8e  Unknown
> > /dev/sdc3         15477     15480     32130   8e  Unknown
> > /dev/sdc4         15481     15484     32130   8e  Unknown
> >
> > Command (m for help): w
> > The partition table has been altered!
> >
> > Calling ioctl() to re-read partition table.
> > Re-read table failed with error 16: Device or resource busy.
> > Reboot your system to ensure the partition table is updated.
> >
> > WARNING: If you have created or modified any DOS 6.x
> > partitions, please see the fdisk manual page for additional
> > information.
> > Syncing disks.
> >
> > [root@filmore /mnt]# pvcreate /dev/sdc2
> > pvcreate -- physical volume "/dev/sdc2" successfully created
> >
> > [root@filmore /mnt]# pvcreate /dev/sdc3
> > pvcreate -- can't open physical volume "/dev/sdc3" to get its size
> >
> > pvcreate [-d|--debug] [-f[f]|--force [--force]] [-h|--help] 
> [-y|--yes]
> >         [-v|--verbose] [-V|--version] PhysicalVolume 
> [PhysicalVolume...]
> >
> > Script done on Fri May  4 07:34:33 2001
> >
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm@sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> 
> Can you try rebooting and trying the pvcreate again? I 
> suspect that it was
> because the partition table was unable to be updated.
> 
> Glenn
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> 

^ permalink raw reply	[flat|nested] 11+ messages in thread
* RE: [linux-lvm] Can't pvcreate second partition...
@ 2001-05-06 17:36 Darren Young
  2001-05-07  4:11 ` AJ Lewis
  2001-05-07  9:40 ` Michael Tokarev
  0 siblings, 2 replies; 11+ messages in thread
From: Darren Young @ 2001-05-06 17:36 UTC (permalink / raw)
  To: linux-lvm

Funny, I had the same issue at the same time. I
created /dev/hdb7 with fdisk and then a pvcreate just
after. pvcreate stated that the dev didn't exist.
Reboot fixed the problem. This could be a problem for
machines already up in production with small windows
for restarts. Why is this necessary and will it become
a "non-issue" in future releases? If this will be
necessary forever, then some simple planning would
solve the problem, at least on new installations. Any
way around this?

On another note, I have a customer running Oracle that
wishes to move to a LVM configuration. They are
extremely reliant on the machine being up and it's
very active. Is LVM at a point where I can safely
install it on a critical system? Loaded question, I
know, but I need some honest feedback.

I finally have it up and running on two machines and
to those that have developed it, it's really freakin'
cool.

An off topic question, but I think this is the best
place to start. How could one build "network logical
volumes"? Let's say I have 5 machines running LVM and
each one has a 10G /export volume. I want to take all
the export volumes off each machine and create one
large "network volume" of 50G. Then, from each client
I would like to mount that volume at /bignet or
something. Maybe if it could do a pseudo raid across
the 5 machines. If machine a went down, then data
could be gotten from another one since it's striped. I
know I could do read only redundancy with NFS, but i'd
like to be able to write. I think MS calls their
solution to this type of scenario DFS. Something like
this around for UNIX? Specifically Linux, but also
Solaris. Any pointers or suggestions would be great.

Darren Young


-----Original Message-----
From: linux-lvm-admin@sistina.com
[mailto:linux-lvm-admin@sistina.com]On
Behalf Of Glenn Shannon
Sent: Friday, May 04, 2001 6:14 PM
To: linux-lvm@sistina.com
Subject: Re: [linux-lvm] Can't pvcreate second
partition...


"Diehl, Jeffrey" wrote:

> Hi all.
>
> I'm new to LVM, but think I understad it, at
least... <grin>
>
> Anyway, I'm trying to setup the first VG but can't
seem to build my PV's.
> The transcript of what I did is at the bottom of
this message.
>
> As you can see, I was able to do pvcreate on
/dev/sdc2, but not on
> /dev/sdc3.  These partitions are on a hardware
raid5.
>
> Am I missing something?
>
> Thanx,
> Mike Diehl,
> Network Monitoring Tool Devl.
> 284-3137
> jdiehl@sandia.gov
>
> Script started on Fri May  4 07:33:56 2001
> [root@filmore /mnt]# fdisk /dev/sdc
>
> The number of cylinders for this disk is set to
30945.
> There is nothing wrong with that, but this is larger
than 1024,
> and could in certain setups cause problems with:
> 1) software that runs at boot time (e.g., LILO)
> 2) booting and partitioning software from other OSs
>    (e.g., DOS FDISK, OS/2 FDISK)
>
> Command (m for help): p
>
> Disk /dev/sdc: 255 heads, 63 sectors, 30945
cylinders
> Units = cylinders of 16065 * 512 bytes
>
>    Device Boot    Start       End    Blocks   Id 
System
> /dev/sdc1             1     15472 124278808+  8e 
Unknown
> /dev/sdc2         15473     15476     32130   8e 
Unknown
> /dev/sdc3         15477     15480     32130   8e 
Unknown
> /dev/sdc4         15481     15484     32130   8e 
Unknown
>
> Command (m for help): w
> The partition table has been altered!
>
> Calling ioctl() to re-read partition table.
> Re-read table failed with error 16: Device or
resource busy.
> Reboot your system to ensure the partition table is
updated.
>
> WARNING: If you have created or modified any DOS 6.x
> partitions, please see the fdisk manual page for
additional
> information.
> Syncing disks.
>
> [root@filmore /mnt]# pvcreate /dev/sdc2
> pvcreate -- physical volume "/dev/sdc2" successfully
created
>
> [root@filmore /mnt]# pvcreate /dev/sdc3
> pvcreate -- can't open physical volume "/dev/sdc3"
to get its size
>
> pvcreate [-d|--debug] [-f[f]|--force [--force]]
[-h|--help] [-y|--yes]
>         [-v|--verbose] [-V|--version] PhysicalVolume
[PhysicalVolume...]
>
> Script done on Fri May  4 07:34:33 2001
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm

Can you try rebooting and trying the pvcreate again? I
suspect that it was
because the partition table was unable to be updated.

Glenn

_______________________________________________
linux-lvm mailing list
linux-lvm@sistina.com
http://lists.sistina.com/mailman/listinfo/linux-lvm

__________________________________________________
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Yahoo! Auctions - buy the things you want at great prices
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^ permalink raw reply	[flat|nested] 11+ messages in thread
* [linux-lvm] Can't pvcreate second partition...
@ 2001-05-04 21:48 Diehl, Jeffrey
  2001-05-04 23:13 ` Glenn Shannon
  0 siblings, 1 reply; 11+ messages in thread
From: Diehl, Jeffrey @ 2001-05-04 21:48 UTC (permalink / raw)
  To: 'linux-lvm@sistina.com'; +Cc: Diehl, Jeffrey

Hi all.

I'm new to LVM, but think I understad it, at least... <grin>

Anyway, I'm trying to setup the first VG but can't seem to build my PV's.
The transcript of what I did is at the bottom of this message.

As you can see, I was able to do pvcreate on /dev/sdc2, but not on
/dev/sdc3.  These partitions are on a hardware raid5.

Am I missing something?

Thanx,
Mike Diehl,
Network Monitoring Tool Devl.
284-3137
jdiehl@sandia.gov



Script started on Fri May  4 07:33:56 2001
[root@filmore /mnt]# fdisk /dev/sdc

The number of cylinders for this disk is set to 30945.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/sdc: 255 heads, 63 sectors, 30945 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sdc1             1     15472 124278808+  8e  Unknown
/dev/sdc2         15473     15476     32130   8e  Unknown
/dev/sdc3         15477     15480     32130   8e  Unknown
/dev/sdc4         15481     15484     32130   8e  Unknown

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Re-read table failed with error 16: Device or resource busy.
Reboot your system to ensure the partition table is updated.

WARNING: If you have created or modified any DOS 6.x
partitions, please see the fdisk manual page for additional
information.
Syncing disks.

[root@filmore /mnt]# pvcreate /dev/sdc2
pvcreate -- physical volume "/dev/sdc2" successfully created

[root@filmore /mnt]# pvcreate /dev/sdc3
pvcreate -- can't open physical volume "/dev/sdc3" to get its size

pvcreate [-d|--debug] [-f[f]|--force [--force]] [-h|--help] [-y|--yes]
        [-v|--verbose] [-V|--version] PhysicalVolume [PhysicalVolume...]

Script done on Fri May  4 07:34:33 2001

^ permalink raw reply	[flat|nested] 11+ messages in thread
end of thread, other threads:[~2001-05-08  3:23 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2001-05-07 22:13 [linux-lvm] Can't pvcreate second partition Diehl, Jeffrey
2001-05-07 23:08 ` AJ Lewis
2001-05-07 23:16   ` Glenn Shannon
  -- strict thread matches above, loose matches on Subject: below --
2001-05-07 23:14 Diehl, Jeffrey
2001-05-08  3:23 ` Darren Young
2001-05-07 22:12 Diehl, Jeffrey
2001-05-06 17:36 Darren Young
2001-05-07  4:11 ` AJ Lewis
2001-05-07  9:40 ` Michael Tokarev
2001-05-04 21:48 Diehl, Jeffrey
2001-05-04 23:13 ` Glenn Shannon

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