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Date: Wed, 10 Jun 2015 13:35:15 +0200
From: Lars Ellenberg <lars.ellenberg@linbit.com>
To: drbd-dev@lists.linbit.com
Message-ID: <20150610113515.GC22714@soda.linbit>
References: <1433922509-10280-1-git-send-email-nwang@suse.com>
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Subject: Re: [Drbd-dev] [PATCH 00/10] Zero out devices instead of initial
	full sync
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On Wed, Jun 10, 2015 at 03:48:19PM +0800, Nick Wang wrote:
> Full sync for drbd initial usually take a long time, especically
> when network become the bottleneck the syncing. Simply skip the
> full sync with "--clear-bitmap" may not the perfect solution
> for all the cases. So this patches can be used to zero out=20
> devices locally instead of a full sync,two make consistent block=20
> device. This approach can be useful when lack of network bandwidth=20
> to sync.
>=20
> The patches add one new option "--zap-devices" to "new-current-uuid"=20
> to zero out devices. Besides the change of drbd, also need to modify=20
> drbd-utils for the flag.
>=20
> All patches are compiled/tested against SLES12.

Completely unnecessary.
Zero out the devices in userspace, then set up DRBD,
and skip the initial sync.

--=20
: Lars Ellenberg
: http://www.LINBIT.com | Your Way to High Availability
: DRBD, Linux-HA  and  Pacemaker support and consulting

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