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 1F6E563EDA for ; Fri, 17 Jul 2020 16:56:00 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 0CFE41D805 for ; Fri, 17 Jul 2020 16:55:30 +0200 (CEST) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [212.186.127.180]) (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 firstgate.proxmox.com (Proxmox) with ESMTPS id 3C29F1D7FD for ; Fri, 17 Jul 2020 16:55:29 +0200 (CEST) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 01A9640F78 for ; Fri, 17 Jul 2020 16:55:29 +0200 (CEST) From: Stoiko Ivanov To: pbs-devel@lists.proxmox.com Date: Fri, 17 Jul 2020 14:55:17 +0000 Message-Id: <20200717145517.21661-1-s.ivanov@proxmox.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment RCVD_IN_DNSWL_MED -2.3 Sender listed at https://www.dnswl.org/, medium trust SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [proxmox.com] Subject: [pbs-devel] [PATCH proxmox-backup] docs: add note on supported filesystems X-BeenThere: pbs-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox Backup Server development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Jul 2020 14:56:00 -0000 certain filesystems cannot be used as chunkstores, because they don't support 2^16 subdirectories (e.g. ext4 with certain features disabled or ext3 - see ext4(5)) reported via our community forum: https://forum.proxmox.com/threads/emlink-too-many-links.73108/ Signed-off-by: Stoiko Ivanov --- docs/administration-guide.rst | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/docs/administration-guide.rst b/docs/administration-guide.rst index 1f329f80..e48f115a 100644 --- a/docs/administration-guide.rst +++ b/docs/administration-guide.rst @@ -139,6 +139,12 @@ or ``zfs``) to store the backup data. Datastores are identified by a simple *ID*. You can configure it when setting up the backup server. +.. note:: The `File Layout`_ requires the file system to support more than + 65537 subdirectories per directory. This excludes certain filesystems and + filesystem configuration from being supported as datastore. For example + ``ext4`` without the ``dir_nlink`` feature (which is enabled by default) + and ``ext3``. + Datastore Configuration -- 2.20.1