From owner-svn-src-head@FreeBSD.ORG Thu Apr 10 16:00:34 2014 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 3D3E9AFD; Thu, 10 Apr 2014 16:00:34 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1D8151357; Thu, 10 Apr 2014 16:00:34 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s3AG0XnR009137; Thu, 10 Apr 2014 16:00:33 GMT (envelope-from mav@svn.freebsd.org) Received: (from mav@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s3AG0X52009136; Thu, 10 Apr 2014 16:00:33 GMT (envelope-from mav@svn.freebsd.org) Message-Id: <201404101600.s3AG0X52009136@svn.freebsd.org> From: Alexander Motin Date: Thu, 10 Apr 2014 16:00:33 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r264318 - head/sys/geom/raid X-SVN-Group: head 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: 2.1.17 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, 10 Apr 2014 16:00:34 -0000 Author: mav Date: Thu Apr 10 16:00:33 2014 New Revision: 264318 URL: http://svnweb.freebsd.org/changeset/base/264318 Log: Fix wrong sizes used to access PD_Type and PD_State DDF metadata fields. This caused incorrect behavior of arrays with big-endian DDF metadata. Little-endian (like used by Adaptec controllers) should not be harmed. Add workaround should be enough to manage compatibility. MFC after: 2 weeks Modified: head/sys/geom/raid/md_ddf.c Modified: head/sys/geom/raid/md_ddf.c ============================================================================== --- head/sys/geom/raid/md_ddf.c Thu Apr 10 14:37:37 2014 (r264317) +++ head/sys/geom/raid/md_ddf.c Thu Apr 10 16:00:33 2014 (r264318) @@ -1182,6 +1182,28 @@ hdrerror: g_free(buf); if (GET32(meta, pdr->Signature) != DDF_PDR_SIGNATURE) goto hdrerror; + /* + * Workaround for reading metadata corrupted due to graid bug. + * XXX: Remove this before we have disks above 128PB. :) + */ + if (meta->bigendian) { + for (i = 0; i < GET16(meta, pdr->Populated_PDEs); i++) { + if (isff(meta->pdr->entry[i].PD_GUID, 24)) + continue; + if (GET32(meta, pdr->entry[i].PD_Reference) == + 0xffffffff) + continue; + if (GET64(meta, pdr->entry[i].Configured_Size) >= + (1ULL << 48)) { + SET16(meta, pdr->entry[i].PD_State, + GET16(meta, pdr->entry[i].PD_State) & + ~DDF_PDE_FAILED); + SET64(meta, pdr->entry[i].Configured_Size, + GET64(meta, pdr->entry[i].Configured_Size) & + ((1ULL << 48) - 1)); + } + } + } /* Read virtual disk records. */ buf = g_read_data(cp, (lba + GET32(meta, hdr->vdr_section)) * ss, @@ -1711,7 +1733,7 @@ nofit: /* Welcome the new disk. */ if (resurrection) g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); - else if (GET8(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) + else if (GET16(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED); else g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); @@ -1730,11 +1752,11 @@ nofit: /* Stale disk, almost same as new. */ g_raid_change_subdisk_state(sd, G_RAID_SUBDISK_S_NEW); - } else if (GET8(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) { + } else if (GET16(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) { /* Failed disk. */ g_raid_change_subdisk_state(sd, G_RAID_SUBDISK_S_FAILED); - } else if ((GET8(gmeta, pdr->entry[md_pde_pos].PD_State) & + } else if ((GET16(gmeta, pdr->entry[md_pde_pos].PD_State) & (DDF_PDE_FAILED | DDF_PDE_REBUILD)) != 0) { /* Rebuilding disk. */ g_raid_change_subdisk_state(sd, @@ -2833,24 +2855,24 @@ g_raid_md_write_ddf(struct g_raid_md_obj GET32(vmeta, bvdc[bvd]->Physical_Disk_Sequence[pos])); if (j < 0) continue; - SET32(gmeta, pdr->entry[j].PD_Type, - GET32(gmeta, pdr->entry[j].PD_Type) | + SET16(gmeta, pdr->entry[j].PD_Type, + GET16(gmeta, pdr->entry[j].PD_Type) | DDF_PDE_PARTICIPATING); if (sd->sd_state == G_RAID_SUBDISK_S_NONE) - SET32(gmeta, pdr->entry[j].PD_State, - GET32(gmeta, pdr->entry[j].PD_State) | + SET16(gmeta, pdr->entry[j].PD_State, + GET16(gmeta, pdr->entry[j].PD_State) | (DDF_PDE_FAILED | DDF_PDE_MISSING)); else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED) - SET32(gmeta, pdr->entry[j].PD_State, - GET32(gmeta, pdr->entry[j].PD_State) | + SET16(gmeta, pdr->entry[j].PD_State, + GET16(gmeta, pdr->entry[j].PD_State) | (DDF_PDE_FAILED | DDF_PDE_PFA)); else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD) - SET32(gmeta, pdr->entry[j].PD_State, - GET32(gmeta, pdr->entry[j].PD_State) | + SET16(gmeta, pdr->entry[j].PD_State, + GET16(gmeta, pdr->entry[j].PD_State) | DDF_PDE_REBUILD); else - SET32(gmeta, pdr->entry[j].PD_State, - GET32(gmeta, pdr->entry[j].PD_State) | + SET16(gmeta, pdr->entry[j].PD_State, + GET16(gmeta, pdr->entry[j].PD_State) | DDF_PDE_ONLINE); } } @@ -2863,8 +2885,8 @@ g_raid_md_write_ddf(struct g_raid_md_obj if (i < 0) continue; if (disk->d_state == G_RAID_DISK_S_FAILED) { - SET32(gmeta, pdr->entry[i].PD_State, - GET32(gmeta, pdr->entry[i].PD_State) | + SET16(gmeta, pdr->entry[i].PD_State, + GET16(gmeta, pdr->entry[i].PD_State) | (DDF_PDE_FAILED | DDF_PDE_PFA)); } if (disk->d_state != G_RAID_DISK_S_SPARE) @@ -2881,8 +2903,8 @@ g_raid_md_write_ddf(struct g_raid_md_obj GET16(gmeta, pdr->entry[i].PD_Type) | DDF_PDE_CONFIG_SPARE); } - SET32(gmeta, pdr->entry[i].PD_State, - GET32(gmeta, pdr->entry[i].PD_State) | + SET16(gmeta, pdr->entry[i].PD_State, + GET16(gmeta, pdr->entry[i].PD_State) | DDF_PDE_ONLINE); }