From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C5B5C433FE for ; Fri, 1 Oct 2021 16:40:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5363461A08 for ; Fri, 1 Oct 2021 16:40:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354635AbhJAQl5 (ORCPT ); Fri, 1 Oct 2021 12:41:57 -0400 Received: from outgoing-auth-1.mit.edu ([18.9.28.11]:42743 "EHLO outgoing.mit.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S232133AbhJAQl5 (ORCPT ); Fri, 1 Oct 2021 12:41:57 -0400 Received: from cwcc.thunk.org (pool-72-74-133-215.bstnma.fios.verizon.net [72.74.133.215]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 191Ge5bq022341 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 1 Oct 2021 12:40:06 -0400 Received: by cwcc.thunk.org (Postfix, from userid 15806) id 9BD4515C34A8; Fri, 1 Oct 2021 12:40:05 -0400 (EDT) Date: Fri, 1 Oct 2021 12:40:05 -0400 From: "Theodore Ts'o" To: Lukas Czerner Cc: Andreas Dilger , Alok Jain , linux-ext4@vger.kernel.org Subject: Re: Issue with extension of ext4 filesystem on Rhel7 Message-ID: References: <81899623-90FE-4AFA-AAB6-5ABB21903CBB@dilger.ca> <20211001144239.fgizeucgzhingeio@work> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211001144239.fgizeucgzhingeio@work> Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On Fri, Oct 01, 2021 at 04:42:39PM +0200, Lukas Czerner wrote: > > as others have already mentioned, unfortunatelly your file system does > not have 64-bit feature enabled and so you won't be able to simply > resize past 16TB. This feature was made default after RHEL7 GA, but sadly > it was likely too late for you, sorry about that. > > You can try the advice given here, or you can contact RH support as they > might have some solution for you. However I am affraid it will always > involve backup for the reasons already mentioned. It should also be noted that if you are using an enterprise linux distro, something like a "Linux 3.10" or an "e2fsprogs 1.42.9" from an enterprise linux has so many backports that it's going to be quite different from an upstream version. As a result, you're probably going to be better off seeking help from the enterprise linux's support desk, since they will be set up to help you much better than usptream developers. Also, there is a big difference between what an enterprise linux might support and a community distro. For example, even though Fedora has defaulted to btrfs, Red Hat Enterprise Linux has not decided to support btrfs. It was a techniolgy preview in RHEL 6 and 7, but it was fully removed in RHEL 8. So again, if you are using an Enterprise Linux distribution, you should really ask their support folks so you can get their advice, and find out what they will actually support. Cheers, - Ted