[ClusterLabs] Antw: Re: Antw: [EXT] Re: DRBD + VDO HowTo?

[Eric Robinson]

> -----Original Message-----
> From: Users <users-bounces at clusterlabs.org> On Behalf Of Ulrich Windl
> Sent: Tuesday, May 18, 2021 3:03 AM
> To: users at clusterlabs.org
> Subject: [ClusterLabs] Antw: Re: Antw: [EXT] Re: DRBD + VDO HowTo?
>
> >>> Eric Robinson <eric.robinson at psmnv.com> schrieb am 18.05.2021 um
> >>> 08:58 in
> Nachricht
> <SA2PR03MB5884FDFAE54573C4B86B4F8BFA2C9 at SA2PR03MB5884.namprd0
> 3.prod.outlook.com>
>
> >>  ‑‑‑‑‑Original Message‑‑‑‑‑
> >> From: Users <users‑bounces at clusterlabs.org> On Behalf Of Ulrich Windl
> >> Sent: Tuesday, May 18, 2021 12:51 AM
> >> To: users at clusterlabs.org
> >> Subject: [ClusterLabs] Antw: [EXT] Re: DRBD + VDO HowTo?
> >>
> >> >>> Eric Robinson <eric.robinson at psmnv.com> schrieb am 17.05.2021 um
> >> 20:28 in
> >> Nachricht
> >>
> <SA2PR03MB5884DD970AC5ED0EA56758EFFA2D9 at SA2PR03MB5884.namprd
> >> 03.prod.outlook.com>
> >> >         R=$(/usr/bin/vdo status ‑n $VOL|grep Activate|awk
> '{$1=$1};1'|cut
> >>
> >> I just wonder: What is "awk '{$1=$1};1'" supposed to do?
> >>
> >
> > It replaces all whitespace, including tabs, with single spaces, which
> > makes
>
> > it easy to parse with cut.
> >
> >> I also believe that "grep Activate|awk '{$1=$1};1'|cut ‑d" " ‑f2)"
> >> can be
> done
> >> in one awk command.
> >
> > I'm sure it could, if I had ever taken time to learn awk.
>
> I'm not using VDO, but my guess would be:
> awk '/Activate/ { print $2 }'
>
> Probably the "/Activate/" part could be improved making the match more
> specific, but I would have to see the command output...
>

I tested it and you're 100% correct. I learned something!

> Regards,
> Ulrich
>
> >
> >>
> >> Regards,
> >> Ulrich
> >>
> >>
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