From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 9E097B90C3 for ; Thu, 7 Dec 2023 17:10:44 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 7E61414920 for ; Thu, 7 Dec 2023 17:10:44 +0100 (CET) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS for ; Thu, 7 Dec 2023 17:10:43 +0100 (CET) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 4DB584318B for ; Thu, 7 Dec 2023 17:10:42 +0100 (CET) From: Fiona Ebner To: pve-devel@lists.proxmox.com Date: Thu, 7 Dec 2023 17:10:38 +0100 Message-Id: <20231207161038.90626-3-f.ebner@proxmox.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231207161038.90626-1-f.ebner@proxmox.com> References: <20231207161038.90626-1-f.ebner@proxmox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL -0.077 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record T_SCC_BODY_TEXT_LINE -0.01 - Subject: [pve-devel] [PATCH docs 1/1] storage: lvm: expand on description of saferemove option X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Dec 2023 16:10:44 -0000 mentioning why zeroing-out might be necessary. Signed-off-by: Fiona Ebner --- pve-storage-lvm.adoc | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/pve-storage-lvm.adoc b/pve-storage-lvm.adoc index 917d8fb..cff5d3e 100644 --- a/pve-storage-lvm.adoc +++ b/pve-storage-lvm.adoc @@ -38,7 +38,10 @@ on a remote iSCSI server. `saferemove`:: Zero-out data when removing LVs. When removing a volume, this makes -sure that all data gets erased. +sure that all data gets erased and cannot be accessed by other LVs +created later (which happen to be assigned the same physical extents). +This is a costly operation, but may be required as a security measure +in certain environments. `saferemove_throughput`:: -- 2.39.2