From owner-svn-src-head@freebsd.org Thu Sep 17 04:39:40 2020 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 27B553FC04F; Thu, 17 Sep 2020 04:39:40 +0000 (UTC) (envelope-from eugen@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BsPQ4014qz4hnk; Thu, 17 Sep 2020 04:39:40 +0000 (UTC) (envelope-from eugen@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id D913F249C0; Thu, 17 Sep 2020 04:39:39 +0000 (UTC) (envelope-from eugen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 08H4dd40092137; Thu, 17 Sep 2020 04:39:39 GMT (envelope-from eugen@FreeBSD.org) Received: (from eugen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 08H4ddeb092136; Thu, 17 Sep 2020 04:39:39 GMT (envelope-from eugen@FreeBSD.org) Message-Id: <202009170439.08H4ddeb092136@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: eugen set sender to eugen@FreeBSD.org using -f From: Eugene Grosbein Date: Thu, 17 Sep 2020 04:39:39 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r365830 - head/sys/geom/part X-SVN-Group: head X-SVN-Commit-Author: eugen X-SVN-Commit-Paths: head/sys/geom/part X-SVN-Commit-Revision: 365830 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Sep 2020 04:39:40 -0000 Author: eugen Date: Thu Sep 17 04:39:39 2020 New Revision: 365830 URL: https://svnweb.freebsd.org/changeset/base/365830 Log: geom_part: make it possible recovering broken GPT after some LBAs cut off This is followup to r365477. If pre-formatted device has GPT and a partition covering last available LBAs and the device is attached using a bridge reducing amount of LBAs, then it could be not enough forcing GEOM to use primary GPT. Also, we should make it possible to recover GPT and this requires either deleting or resizing the partition. This change enables "gpart delete" and "gpart resize" commands on corrupted GPT with following "gpart recover". It still does not allow modifying corrupted GPT without preliminary setting sysctl kern.geom.part.check_integrity=0 For example: # gpart show da0 => 34 3906963389 da0 GPT (1.8T) [CORRUPT] 34 262144 1 ms-reserved (128M) 262178 2014 - free - (1.0M) 264192 3906764943 2 freebsd-swap (1.8T) # gpart resize -i 2 -s 3900000000 da0 # gpart recover da0 Reported by: Alex Korchmar MFC after: 3 days Modified: head/sys/geom/part/g_part.c Modified: head/sys/geom/part/g_part.c ============================================================================== --- head/sys/geom/part/g_part.c Thu Sep 17 02:18:21 2020 (r365829) +++ head/sys/geom/part/g_part.c Thu Sep 17 04:39:39 2020 (r365830) @@ -1852,7 +1852,8 @@ g_part_ctlreq(struct gctl_req *req, struct g_class *mp table = gpp.gpp_geom->softc; if (table != NULL && table->gpt_corrupt && ctlreq != G_PART_CTL_DESTROY && - ctlreq != G_PART_CTL_RECOVER) { + ctlreq != G_PART_CTL_RECOVER && + geom_part_check_integrity) { gctl_error(req, "%d table '%s' is corrupt", EPERM, gpp.gpp_geom->name); return;