[linux-lvm] vgscan messages regarding read-only cdrom

[linux-lvm] vgscan messages regarding read-only cdrom

[Kai Weber]

Hi,

when starting lvm2 I get the following annoying messages from vgscan:

$ vgscan
  Reading all physical volumes.  This may take a while...
  /dev/cdrom: open failed: Read-only file system
cdrom: open failed.
cdrom: open failed.
[...]
  Found volume group "datavg" using metadata type lvm1
  Found volume group "systemvg" using metadata type lvm1

The line "cdrom: open failed." is repeated about 50 times. I believe I can
ingore this message. But

* why is vgscan reading /dev/cdrom (a link to my first IDE
CD-ROM /dev/hdc)?

* how can I disable this message?

Kai
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Re: [linux-lvm] vgscan messages regarding read-only cdrom

[Luca Berra]

On Sun, Nov 30, 2003 at 07:58:07PM +0100, Kai Weber wrote:
>* why is vgscan reading /dev/cdrom (a link to my first IDE
>CD-ROM /dev/hdc)?
>
>* how can I disable this message?

man lvm.conf

-- 
Luca Berra -- bluca@comedia.it
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Re: [linux-lvm] vgscan messages regarding read-only cdrom

[Kai Weber]

* Luca Berra <bluca@comedia.it>:

> >* why is vgscan reading /dev/cdrom (a link to my first IDE
> >CD-ROM /dev/hdc)?
> >
> >* how can I disable this message?
> 
> man lvm.conf

Done and and /etc/lvm/lvm.conf adjusted:
                                                                                
devices {
    dir = "/dev"
    scan = [ "/dev" ]
    filter = [ "r|cdrom|" ]
    cache = "/etc/lvm/.cache"
    write_cache_state = 1
}
                                                                                
vgscan still reports
"/dev/cdrom: open failed: Read-only file system"

I tried the following variants:
                                                                                
        filter = [ "r|/dev/cdrom" ]
        filter = [ "r|/dev/cdrom", "r|/dev/hdc" ]
        filter = [ "r|cdrom", "r|hdc" ]
                                                                                
Ideas? Kernel is 2.6.0-test9
                                                                                
LVM version:     2.00.07 (2003-09-16)
Library version: 1.00.05-ioctl-cvs (2003-09-01)
Driver version:  4.0.0
                                                                                
Kai
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Re: [linux-lvm] vgscan messages regarding read-only cdrom

[Jose Luis Domingo Lopez]

On Monday, 01 December 2003, at 11:08:42 +0100,
Kai Weber wrote:

> devices {
>     dir = "/dev"
>     scan = [ "/dev" ]
>     filter = [ "r|cdrom|" ]
>     cache = "/etc/lvm/.cache"
>     write_cache_state = 1
> }
>                                                                                 
It seems you can have just one instance of the "filter" directive, where
you must put every filter you want to apply for devices. For example,
this is what I have in my configuration file:
filter = [ "r|hdd|", "r|cdrom|", "r|md|", "a|.*|" ]

I accept every block device under /dev, but previously exclude /dev/hdd
(my CD-ROM device), /dev/cdrom al MD metadevices from the list. It works.

Greetings.

PS: the man page for lvm.conf doesn't explicitily says you can have just
one "filter" directive, neither the opposite, although the sample
"lvm.conf" bundled with sources and packages seemd to give a hint about
the correct syntax. Would it be necessary to be more specific about that ?

Greetings.

-- 
Jose Luis Domingo Lopez
Linux Registered User #189436     Debian Linux Sid (Linux 2.6.0-test10-mm1)

Re: [linux-lvm] vgscan messages regarding read-only cdrom

[Kai Weber]

* Jose Luis Domingo Lopez <linux-lvm@24x7linux.com>:

> It seems you can have just one instance of the "filter" directive, where
> you must put every filter you want to apply for devices. For example,
> this is what I have in my configuration file:
> filter = [ "r|hdd|", "r|cdrom|", "r|md|", "a|.*|" ]

Thank you for your help. This filter rule works as expected. As you
correctly noticed, the manpage is not clear about it.

Kai
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