From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx03.extmail.prod.ext.phx2.redhat.com [10.5.110.7]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id p0RIPNr6024921 for ; Thu, 27 Jan 2011 13:25:23 -0500 Received: from mho-02-ewr.mailhop.org (mho-02-ewr.mailhop.org [204.13.248.72]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id p0RIPE0m020710 for ; Thu, 27 Jan 2011 13:25:15 -0500 Received: from pool-96-249-243-151.nrflva.fios.verizon.net ([96.249.243.151] helo=titan) by mho-02-ewr.mailhop.org with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.72) (envelope-from ) id 1PiWWw-0009Ag-DH for linux-lvm@redhat.com; Thu, 27 Jan 2011 18:25:14 +0000 Received: from [10.16.5.73] (triton.lakedaemon.net [10.16.5.73]) by titan (Postfix) with ESMTP id 6ABF5166420 for ; Thu, 27 Jan 2011 13:25:12 -0500 (EST) Message-ID: <4D41B887.2050507@lakedaemon.net> Date: Thu, 27 Jan 2011 18:25:11 +0000 From: Jason MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [linux-lvm] guruplug 2.6.37 lvm2 problem Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-lvm@redhat.com All, I have a small problem that's I've been beating my head against for two days. I've installed debian onto an sdcard according to [1]. This required a new U-boot [2]. For grins, I chose encrypted LVM. It works fine with the 2.6.33.3flipflip kernel [3]. However, I'm trying to get 2.6.37 vanilla to work. I think I'm almost there except that lvm2 segfaults every time right after I enter the password. So, I jumped into initramfs and ran 'lvm pvscan -v -v -v -v' for both kernels. Here's the output: ### 'lvm pvscan -v -v -v -v' on 2.6.33.3flipflip ####################### (initramfs) lvm pvscan -v -v -v -v #lvmcmdline.c:1035 Processing: pvscan -v -v -v -v #lvmcmdline.c:1038 O_DIRECT will be used #config/config.c:987 Setting global/locking_type to 1 #config/config.c:987 Setting global/wait_for_locks to 1 #locking/locking.c:240 File-based locking selected. #config/config.c:964 Setting global/locking_dir to /var/lock/lvm #locking/file_locking.c:235 Locking /var/lock/lvm/P_global WB #locking/file_locking.c:141 _do_flock /var/lock/lvm/P_global:aux WB #locking/file_locking.c:141 _do_flock /var/lock/lvm/P_global WB #locking/file_locking.c:51 _undo_flock /var/lock/lvm/P_global:aux #filters/filter-persistent.c:56 Wiping cache of LVM-capable devices #device/dev-cache.c:247 /dev/block/1:0: Already in device cache ...snip... #device/dev-io.c:487 Opened /dev/dm-0 RO #device/dev-io.c:260 /dev/dm-0: size is 30820344 sectors #device/dev-io.c:533 Closed /dev/dm-0 #device/dev-io.c:260 /dev/dm-0: size is 30820344 sectors #device/dev-io.c:487 Opened /dev/dm-0 RO O_DIRECT #device/dev-io.c:134 /dev/dm-0: block size is 4096 bytes #device/dev-io.c:533 Closed /dev/dm-0 #filters/filter-composite.c:31 Using /dev/dm-0 #device/dev-io.c:487 Opened /dev/dm-0 RO O_DIRECT #device/dev-io.c:134 /dev/dm-0: block size is 4096 bytes #label/label.c:160 /dev/dm-0: lvm2 label detected #cache/lvmcache.c:1136 lvmcache: /dev/dm-0: now in VG #orphans_lvm2 (#orphans_lvm2) #format_text/format-text.c:1137 /dev/dm-0: Found metadata at 6656 size 1158 (in area at 4096 size 192512) for debian (UUID_WAS_HERE) #cache/lvmcache.c:1136 lvmcache: /dev/dm-0: now in VG debian with 1 mdas #cache/lvmcache.c:923 lvmcache: /dev/dm-0: setting debian VGID to UUID_WAS_HERE #cache/lvmcache.c:1173 lvmcache: /dev/dm-0: VG debian: Set creation host to debian. #device/dev-io.c:533 Closed /dev/dm-0 #device/dev-io.c:487 Opened /dev/ram1 RO ...snip... #label/label.c:270 Using cached label for /dev/dm-0 #device/dev-io.c:487 Opened /dev/dm-0 RO O_DIRECT #device/dev-io.c:134 /dev/dm-0: block size is 4096 bytes #label/label.c:270 Using cached label for /dev/dm-0 #format_text/format-text.c:498 Read debian metadata (3) from /dev/dm-0 at 6656 size 1158 #device/dev-io.c:533 Closed /dev/dm-0 #metadata/pv_manip.c:296 /dev/dm-0 0: 0 3592: root(0:0) #metadata/pv_manip.c:296 /dev/dm-0 1: 3592 170: swap_1(0:0) PV /dev/dm-0 VG debian lvm2 [14.70 GiB / 0 free] Total: 1 [14.70 GiB] / in use: 1 [14.70 GiB] / in no VG: 0 [0 ] #locking/file_locking.c:74 Unlocking /var/lock/lvm/P_global #locking/file_locking.c:51 _undo_flock /var/lock/lvm/P_global (initramfs) ######################################################################## And then the failure: ### 'lvm pvscan -v -v -v -v' on 2.6.37 ################################# (initramfs) lvm pvscan -v -v -v -v #lvmcmdline.c:1035 Processing: pvscan -v -v -v -v #lvmcmdline.c:1038 O_DIRECT will be used #config/config.c:987 Setting global/locking_type to 1 #config/config.c:987 Setting global/wait_for_locks to 1 #locking/locking.c:240 File-based locking selected. #config/config.c:964 Setting global/locking_dir to /var/lock/lvm #locking/file_locking.c:235 Locking /var/lock/lvm/P_global WB #locking/file_locking.c:141 _do_flock /var/lock/lvm/P_global:aux WB #locking/file_locking.c:141 _do_flock /var/lock/lvm/P_global WB #locking/file_locking.c:51 _undo_flock /var/lock/lvm/P_global:aux #filters/filter-persistent.c:56 Wiping cache of LVM-capable devices #device/dev-cache.c:262 /dev/block/253:0: Added to device cache ...snip... #pvscan.c:134 Walking through all physical volumes #device/dev-io.c:443 /dev/sda: open failed: No medium found #filters/filter.c:143 /dev/sda: Skipping: open failed #device/dev-io.c:487 Opened /dev/dm-0 RO #device/dev-io.c:260 /dev/dm-0: size is 30820344 sectors #device/dev-io.c:533 Closed /dev/dm-0 #device/dev-io.c:260 /dev/dm-0: size is 30820344 sectors #device/dev-io.c:487 Opened /dev/dm-0 RO O_DIRECT #device/dev-io.c:134 /dev/dm-0: block size is 4096 bytes #device/dev-io.c:533 Closed /dev/dm-0 #filters/filter-composite.c:31 Using /dev/dm-0 #device/dev-io.c:487 Opened /dev/dm-0 RO O_DIRECT #device/dev-io.c:134 /dev/dm-0: block size is 4096 bytes Segmentation fault (initramfs) ######################################################################## /dev/dm-0 is the decrypted device containing the LVM. ### Versions ########################################################### (initramfs) lvm version LVM version: 2.02.66(2) (2010-05-20) Library version: 1.02.48 (2010-05-20) Driver version: 4.17.0 (initramfs) ######################################################################## Based on a Gentoo bug [4] and a Debian bug [5], I'm not the first to encounter this. I have tried all combinations of CONFIG_SYSFS_DEPRECATED and CONFIG_SYSFS_DEPRECATED_V2, without luck. I've also tried --sysinit and --ignorelockingfailure with similar results. Tracing the lvm2 code, it looks like the segfault may lie in lib/label/label.c:107 _find_labeller(). Probably after line 120, dev_read() and before line 160, log_very_verbose()... As I'm fairly new to embedded debian, what's the easiest path to fix this? I'm running out of ideas. I'd _really_ prefer to keep 2.6.37, it's a bragging rights thing... ;-) Does anyone know where exactly the error is coming from? Is there a missing sysfs entry? My desktop (Ubuntu 10.04) runs 2.6.37 fine, but with an older lvm2 (2.02.54(1), lib 1.02.39, driver 4.18.0). Getting a coredump out of the initrd is proving difficult... thanks for any input, Jason. [1] http://bzed.de/posts/2010/05/installing_debian_on_the_guruplug_server_plus/ [2] http://oinkzwurgl.org/guruplug_uboot [3] http://oinkzwurgl.org/guruplug_kernel [4] http://bugs.gentoo.org/show_bug.cgi?id=292833 [5] http://www.mail-archive.com/debian-bugs-rc@lists.debian.org/msg221947.html