From owner-freebsd-fs@FreeBSD.ORG Wed Jul 3 19:28:35 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id CC6DEC7 for ; Wed, 3 Jul 2013 19:28:35 +0000 (UTC) (envelope-from berend@pobox.com) Received: from smtp.pobox.com (b-pb-sasl-quonix.pobox.com [208.72.237.35]) by mx1.freebsd.org (Postfix) with ESMTP id 89DBD1158 for ; Wed, 3 Jul 2013 19:28:33 +0000 (UTC) Received: from smtp.pobox.com (unknown [127.0.0.1]) by b-sasl-quonix.pobox.com (Postfix) with ESMTP id CB1452DE12; Wed, 3 Jul 2013 19:28:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=pobox.com; h=date :message-id:from:to:cc:subject:in-reply-to:references :mime-version:content-type:content-transfer-encoding; s=sasl; bh=PSB//v+n5QSPKwkd8BMwLDup5HQ=; b=IrpcJYMvOTEbQpBGKCsDzJ39gYEi o3bVRkuWb6SxTb9mHw9NBPVRHCKVF4mUWvGpNWX9MGUqeSIwnqE1/nxNOhFQOh/F IPUZEMy+faCdHhxvRspEsuwR7UPdUg6CrdOaBKDDYoZaQsMFAFwp4rmpKKPP+lZ+ /aHNH1CMKVy/AWA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=pobox.com; h=date:message-id :from:to:cc:subject:in-reply-to:references:mime-version :content-type:content-transfer-encoding; q=dns; s=sasl; b=Bkzw6c aodypifgBaajqXPd55UexDVrt4etqhO4N6yYSpmlIR0lYZNjml0pQO6VRxMe3c+R rQHD4BjtqdGQcRFV6KL98GTLOri1ZAkFiEnwOZ9v5/whM/Pyd7yU6XJSlY7XfaPf blI93Ex+kRQzMEIoYOo1p5nGgAX4jw5/9mPlA= Received: from b-pb-sasl-quonix.pobox.com (unknown [127.0.0.1]) by b-sasl-quonix.pobox.com (Postfix) with ESMTP id C0DDA2DE11; Wed, 3 Jul 2013 19:28:31 +0000 (UTC) Received: from bmach.nederware.nl (unknown [27.252.247.84]) by b-sasl-quonix.pobox.com (Postfix) with ESMTPA id 1205C2DE10; Wed, 3 Jul 2013 19:28:31 +0000 (UTC) Received: from quadrio.nederware.nl (quadrio.nederware.nl [192.168.33.13]) by bmach.nederware.nl (Postfix) with ESMTP id AC8F25C55; Thu, 4 Jul 2013 07:28:23 +1200 (NZST) Received: from quadrio.nederware.nl (quadrio.nederware.nl [127.0.0.1]) by quadrio.nederware.nl (Postfix) with ESMTP id 3BF304A11BF3; Thu, 4 Jul 2013 07:28:28 +1200 (NZST) Date: Thu, 04 Jul 2013 07:28:28 +1200 Message-ID: <87obaj4f4z.wl%berend@pobox.com> From: Berend de Boer To: Daniel Kalchev Subject: Re: EBS snapshot backups from a FreeBSD zfs file system: zpool freeze? In-Reply-To: <51D42069.5060409@digsys.bg> References: <87li5o5tz2.wl%berend@pobox.com> <87ehbg5raq.wl%berend@pobox.com> <20130703055047.GA54853@icarus.home.lan> <6488DECC-2455-4E92-B432-C39490D18484@dragondata.com> <14A2336A-969C-4A13-9EFA-C0C42A12039F@hostpoint.ch> <87zju43sxl.wl%berend@pobox.com> <87ppuz51os.wl%berend@pobox.com> <51D42069.5060409@digsys.bg> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 EasyPG/1.0.0 Emacs/24.3 (i686-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) Organization: Xplain Technology Ltd MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: multipart/signed; boundary="pgp-sign-Multipart_Thu_Jul__4_07:28:27_2013-1"; micalg=pgp-sha256; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit X-Pobox-Relay-ID: BE7D8D16-E416-11E2-B126-E84251E3A03C-48001098!b-pb-sasl-quonix.pobox.com Cc: freebsd-fs@freebsd.org X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Jul 2013 19:28:35 -0000 --pgp-sign-Multipart_Thu_Jul__4_07:28:27_2013-1 Content-Type: text/plain; charset=US-ASCII >>>>> "Daniel" == Daniel Kalchev writes: Daniel> It seems, Amazon uses some sort of ZFS (volume) snapshots Daniel> in order to implement the functionality of EBS. Why it Daniel> would take hours to complete is hard to understand, It all depends on how big your disks are :-) First snapshot takes longer, then they take differences. Perhaps 1TB takes 20 minutes or so? But diffs are much faster, usually 2 minutes or so. -- All the best, Berend de Boer ------------------------------------------------------ Awesome Drupal hosting: https://www.xplainhosting.com/ --pgp-sign-Multipart_Thu_Jul__4_07:28:27_2013-1 Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit Content-Description: OpenPGP Digital Signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) iQIcBAABCAAGBQJR1HtbAAoJEKOfeD48G3g5FlIP/iICV3dCIXMMtP8G5WQSPRo2 e780pLr+wfLShagoyfCLg0FAHO1UcodPZGTc3XV2fjZBVZ/vP9R5XghiPdxJKjB2 ZRCZDTptLcWpbGGiVzMa/vq9KnTsHAMnv6b8Xw47vwLrsJItq9eL5prIneT1zvEX OHu2a5760fHcKHVMVU/LiggdN6kPTilbHInVZwJ3MMKidsR0TaKhwxwdS7UiDpMQ ixga19ZxdcmHJDlCK0BnYSc58TzM5QCQMEhmttHjZ/s7Oxh5LLD536YR08bptREm hxeNAcj8640Tir5NLDvJgXZcBZEGcEX57/dCGwAa5uMEs9LouFb/ktYquZ7z8Ats jY9wRyj6l3Y8ivOMzXwt0kKcohey7KrLrWU3NwLUc4cta/8stypynUq8dyaaGBEp nZ83LlrN1WLJn/IhfE2fBo4jjx//qNhhP86EdIaEXc/n1YjgVKEUpp/+wH8QFXL3 OWiA7pYT8XSQxVbCah3qfkiEwVLlkBKB6EwFgSdbs+5DparbEAFebBGmpjBNwaFl lkPOnq3ZSRDvtC+GFeLsuB5PbG835d/Y2WX4TTsv/k9FVeggtw5EizA/3cl4bUQU HBbbG899PyoSJI5v2LYziqnQHHLFpXYb+aMovYH0LSOnvjwnUu1SJuPT81jZJaeE LSE9ITzWYC7VE8eCFzYJ =v+Aw -----END PGP SIGNATURE----- --pgp-sign-Multipart_Thu_Jul__4_07:28:27_2013-1--