Re: [PATCH] udev-rules: prevent systemd from mount devices before they are ready.

[NeilBrown <neilb@suse.de>]

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On Tue, 31 Jul 2012 10:53:47 +0200 harald@redhat.com wrote:

> From: Harald Hoyer <harald@redhat.com>
> 
> In the "add" uevent, ATTR{md/array_state} does not exist, so the next
> rule does not kick in.
> 
> When an array is assembled incrementally, systemd might see it
> before it is ready, try to mount it, fail, and give up.
> Result is that array doesn't get mounted.
> 
> If we ask udev to tell systemd that it isn't ready yet in this
> case, systemd waits until it is ready, and all are happy.
> ---
>  udev-md-raid.rules | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/udev-md-raid.rules b/udev-md-raid.rules
> index 814c897..da9d3c5 100644
> --- a/udev-md-raid.rules
> +++ b/udev-md-raid.rules
> @@ -27,7 +27,7 @@ ENV{DEVTYPE}=="partition", GOTO="md_ignore_state"
>  # container devices have a metadata version of e.g. 'external:ddf' and
>  # never leave state 'inactive'
>  ATTR{md/metadata_version}=="external:[A-Za-z]*", ATTR{md/array_state}=="inactive", GOTO="md_ignore_state"
> -TEST!="md/array_state", GOTO="md_end"
> +TEST!="md/array_state", ENV{SYSTEMD_READY}="0", GOTO="md_end"
>  ATTR{md/array_state}=="|clear|inactive", ENV{SYSTEMD_READY}="0", GOTO="md_end"
>  LABEL="md_ignore_state"
>  

Thanks!

applied.

NeilBrown

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