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
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