From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mimecast-mx02.redhat.com (mimecast05.extmail.prod.ext.rdu2.redhat.com [10.11.55.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E97B88FB0B for ; Sun, 19 Jan 2020 12:59:19 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [207.211.31.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 679F480096D for ; Sun, 19 Jan 2020 12:59:19 +0000 (UTC) Received: from ceres.assyoma.it (93.63.55.57) by mr013msb.fastweb.it (5.8.208) id 5E19B49F00961C9B for linux-lvm@redhat.com; Sun, 19 Jan 2020 13:59:15 +0100 MIME-Version: 1.0 Date: Sun, 19 Jan 2020 13:59:15 +0100 From: Gionatan Danti Message-ID: Content-Transfer-Encoding: 8bit Subject: [linux-lvm] Time needed for take a snapshot Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-lvm@redhat.com Hi list, just for confirmation: is the time needed to take a snapshot constant, or does it depend on how many chunks are mapped in/by the specific thin pool and volume? In other workds, is snapshot create time O(1) or O(n)? Thanks. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti@assyoma.it - info@assyoma.it GPG public key ID: FF5F32A8