Are there race conditions between pvcreate and vgcreate?

Are there race conditions between pvcreate and vgcreate?

[Oliver Rath]

Hi List,

i have a strange problem:

Sometimes a script runs into a failure "device /dev/sdb1 not found or
ignored by filtering" , but the devices are created just before

i.e.

pvcreate /dev/sda5 (1,4TB)
pvcreate /dev/sdb1 (2 TB)

..

vgcreate myvg /dev/sda5 /dev/sdb1

Are there any race conditions? If there are, exist any robust solution
for this? Im using lvm2-tools 2.02.99 + --enbale

Tfh!

Oliver

Are there race conditions between pvcreate and vgcreate?

[Alasdair G Kergon]

On Tue, Aug 13, 2013 at 07:56:32PM +0200, Oliver Rath wrote:
> i have a strange problem:
 
When you see anything strange, add -vvvv to all your commands
and record the output, or configure lvm.conf to write it all
to syslog, if you have things running in parallel and need
to see how they overlap.

> vgcreate myvg /dev/sda5 /dev/sdb1

vgcreate will perform pvcreate itself if necessary.
Try without the pvcreates?

Alasdair

Are there race conditions between pvcreate and vgcreate?

[Oliver Rath]

Hi List,

i have a strange problem:

Sometimes a script runs into a failure "device /dev/sdb1 not found or
ignored by filtering" , but the devices are created just before

i.e.

pvcreate /dev/sda5 (1,4TB)
pvcreate /dev/sdb1 (2 TB)

..

vgcreate myvg /dev/sda5 /dev/sdb1

Are there any race conditions? If there are, exist any robust solution
for this? Im using lvm2-tools 2.02.99 + --with-thin=internal
--with-replicators=insternal

Tfh!

Oliver

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