From owner-svn-src-all@freebsd.org Thu Aug 20 01:31:22 2020 Return-Path: Delivered-To: svn-src-all@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 7292E3CEC3C; Thu, 20 Aug 2020 01:31:22 +0000 (UTC) (envelope-from asomers@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 4BX6Yk2W4tz4p2v; Thu, 20 Aug 2020 01:31:22 +0000 (UTC) (envelope-from asomers@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 3A653BF64; Thu, 20 Aug 2020 01:31:22 +0000 (UTC) (envelope-from asomers@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 07K1VMbs023657; Thu, 20 Aug 2020 01:31:22 GMT (envelope-from asomers@FreeBSD.org) Received: (from asomers@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 07K1VMRf023656; Thu, 20 Aug 2020 01:31:22 GMT (envelope-from asomers@FreeBSD.org) Message-Id: <202008200131.07K1VMRf023656@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: asomers set sender to asomers@FreeBSD.org using -f From: Alan Somers Date: Thu, 20 Aug 2020 01:31:22 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r364412 - head/cddl/contrib/opensolaris/lib/libzfs/common X-SVN-Group: head X-SVN-Commit-Author: asomers X-SVN-Commit-Paths: head/cddl/contrib/opensolaris/lib/libzfs/common X-SVN-Commit-Revision: 364412 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Aug 2020 01:31:22 -0000 Author: asomers Date: Thu Aug 20 01:31:21 2020 New Revision: 364412 URL: https://svnweb.freebsd.org/changeset/base/364412 Log: zfs: fix EIO accessing dataset after resuming interrupted receive ZFS unmounts a dataset while receiving into it and remounts it afterwards. But if ZFS is resuming an incomplete receive, it screws up and ends up with a dataset that is mounted, but returns EIO for every access. This commit fixes that condition. While the vulnerable code also exists in OpenZFS, the problem is not reproducible there. Apparently OpenZFS doesn't unmount the destination dataset during receive, like FreeBSD does. PR: 248606 Reviewed by: mmacy MFC after: 2 weeks Sponsored by: Axcient Differential Revision: https://reviews.freebsd.org/D26034 Modified: head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c Modified: head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c ============================================================================== --- head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c Thu Aug 20 00:52:53 2020 (r364411) +++ head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c Thu Aug 20 01:31:21 2020 (r364412) @@ -3434,7 +3434,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const } if (!flags->dryrun && zhp->zfs_type == ZFS_TYPE_FILESYSTEM && - stream_wantsnewfs) { + (stream_wantsnewfs || resuming)) { /* We can't do online recv in this case */ clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, flags->forceunmount ? MS_FORCE : 0);