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Sat, 7 Aug 2021 13:40:00 +0200 Received: from webmail.assyoma.it (localhost [IPv6:::1]) by plutone.assyoma.it (Postfix) with ESMTPA id DB860DC6A65B for ; Sat, 7 Aug 2021 13:39:59 +0200 (CEST) MIME-Version: 1.0 Date: Sat, 07 Aug 2021 13:39:59 +0200 From: Gionatan Danti To: linux-lvm@redhat.com User-Agent: Roundcube Webmail/1.4.11 Message-ID: <7956b86706382158e1fddb3c4bfbfde3@assyoma.it> X-Sender: g.danti@assyoma.it X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-loop: linux-lvm@redhat.com Subject: [linux-lvm] How to check if thin volume or snapshot was ever activated X-BeenThere: linux-lvm@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-lvm-bounces@redhat.com Errors-To: linux-lvm-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=linux-lvm-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Dear all, as you know, a thin snapshot does have the "k" (skip activation) flag set, so one has to force activation by ignoring the flag (or removing the flag itself). I wonder: can we detect if a volume/snapshot was *ever* activated? My reasoning is that a never-activated snapshot surely did not receive any application writes, so it can be safely removed (ignoring snapshot retention policy). Regards. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti@assyoma.it - info@assyoma.it GPG public key ID: FF5F32A8 _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://listman.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/