Bug#848944: grub-common: grub-probe fails for ZFS root pool on /dev/mapper device

John Goerzen jgoerzen at complete.org
Wed Dec 21 03:58:39 UTC 2016


Package: grub-common
Version: 2.02~beta2-22+deb8u1
Severity: important

Hi,

Running update-grub provides this:


root at hephaestus:/tmp# update-grub
/usr/sbin/grub-probe: error: failed to get canonical path of `/dev/MASS2-zfstank'.

By using strace, I determined the problem is in how it uses zpool
status.

In my situation, it called "zpool status tank".  zpool status, by
default, omits everything before the final slash in the device name.
So, it shows just MASS2-zfstank in the above example, rather than
/dev/mapper/MASS2-zfstank.  grub-probe is clearly assuming --
incorrectly -- that everything is always under /dev.

The correct approach is to use "zpool status -P", which displays the
full path.  Then it will not need to prepend /dev, and will always get
the correct item.



-- Package-specific info:

*********************** BEGIN /proc/mounts
/dev/sda1 /ntfs fuseblk ro,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 0 0
/dev/sdb1 /boot ext2 rw,noatime,nodiratime 0 0
*********************** END /proc/mounts

*********************** BEGIN /boot/grub/device.map
(hd0)	/dev/disk/by-id/ata-Hitachi_HDS723020BLA642_MN1220F32A3W6D
(hd1)	/dev/disk/by-id/ata-WDC_WD5000AAKS-60A7B2_WD-WMASZ0028605
*********************** END /boot/grub/device.map

*********************** BEGIN /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}
function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1 --hint='hd0,msdos1'  e6e07121-50eb-4eab-9d6e-192e089d27d9
else
  search --no-floppy --fs-uuid --set=root e6e07121-50eb-4eab-9d6e-192e089d27d9
fi
    font="/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=en_US
  insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
  set timeout=-1
else
  if [ x$feature_timeout_style = xy ] ; then
    set timeout_style=menu
    set timeout=5
  # Fallback normal timeout code in case the timeout_style feature is
  # unavailable.
  else
    set timeout=5
  fi
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
insmod part_msdos
insmod ext2
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1 --hint='hd0,msdos1'  e6e07121-50eb-4eab-9d6e-192e089d27d9
else
  search --no-floppy --fs-uuid --set=root e6e07121-50eb-4eab-9d6e-192e089d27d9
fi
insmod png
if background_image /grub/.background_cache.png; then
  set color_normal=white/black
  set color_highlight=black/white
else
  set menu_color_normal=cyan/blue
  set menu_color_highlight=white/blue
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
	set gfxpayload="${1}"
}
set linux_gfx_mode=
export linux_gfx_mode
menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-/tank/hephaestus-1/ROOT' {
	load_video
	insmod gzio
	if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
	insmod part_msdos
	insmod ext2
	set root='hd0,msdos1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1 --hint='hd0,msdos1'  e6e07121-50eb-4eab-9d6e-192e089d27d9
	else
	  search --no-floppy --fs-uuid --set=root e6e07121-50eb-4eab-9d6e-192e089d27d9
	fi
	echo	'Loading Linux 3.16.0-4-amd64 ...'
	linux	/vmlinuz-3.16.0-4-amd64 root=ZFS=/hephaestus-1/ROOT ro  cgroup_enable=memory,cpu,devices,cpuacct,freezer,blkio swapaccount=1 security=apparmor apparmor=1
	echo	'Loading initial ramdisk ...'
	initrd	/initrd.img-3.16.0-4-amd64
}
submenu 'Advanced options for Debian GNU/Linux' $menuentry_id_option 'gnulinux-advanced-/tank/hephaestus-1/ROOT' {
	menuentry 'Debian GNU/Linux, with Linux 3.16.0-4-amd64' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.16.0-4-amd64-advanced-/tank/hephaestus-1/ROOT' {
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos1'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1 --hint='hd0,msdos1'  e6e07121-50eb-4eab-9d6e-192e089d27d9
		else
		  search --no-floppy --fs-uuid --set=root e6e07121-50eb-4eab-9d6e-192e089d27d9
		fi
		echo	'Loading Linux 3.16.0-4-amd64 ...'
		linux	/vmlinuz-3.16.0-4-amd64 root=ZFS=/hephaestus-1/ROOT ro  cgroup_enable=memory,cpu,devices,cpuacct,freezer,blkio swapaccount=1 security=apparmor apparmor=1
		echo	'Loading initial ramdisk ...'
		initrd	/initrd.img-3.16.0-4-amd64
	}
	menuentry 'Debian GNU/Linux, with Linux 3.16.0-4-amd64 (sysvinit)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.16.0-4-amd64-init-sysvinit-/tank/hephaestus-1/ROOT' {
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos1'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1 --hint='hd0,msdos1'  e6e07121-50eb-4eab-9d6e-192e089d27d9
		else
		  search --no-floppy --fs-uuid --set=root e6e07121-50eb-4eab-9d6e-192e089d27d9
		fi
		echo	'Loading Linux 3.16.0-4-amd64 ...'
		linux	/vmlinuz-3.16.0-4-amd64 root=ZFS=/hephaestus-1/ROOT ro  cgroup_enable=memory,cpu,devices,cpuacct,freezer,blkio swapaccount=1 security=apparmor apparmor=1 init=/lib/sysvinit/init
		echo	'Loading initial ramdisk ...'
		initrd	/initrd.img-3.16.0-4-amd64
	}
	menuentry 'Debian GNU/Linux, with Linux 3.16.0-4-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.16.0-4-amd64-recovery-/tank/hephaestus-1/ROOT' {
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos1'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1 --hint='hd0,msdos1'  e6e07121-50eb-4eab-9d6e-192e089d27d9
		else
		  search --no-floppy --fs-uuid --set=root e6e07121-50eb-4eab-9d6e-192e089d27d9
		fi
		echo	'Loading Linux 3.16.0-4-amd64 ...'
		linux	/vmlinuz-3.16.0-4-amd64 root=ZFS=/hephaestus-1/ROOT ro single 
		echo	'Loading initial ramdisk ...'
		initrd	/initrd.img-3.16.0-4-amd64
	}
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###

### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows 7 (loader) (on /dev/sda1)' --class windows --class os $menuentry_id_option 'osprober-chain-40908A2F908A2B8A' {
	insmod part_msdos
	insmod ntfs
	set root='hd0,msdos1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1  40908A2F908A2B8A
	else
	  search --no-floppy --fs-uuid --set=root 40908A2F908A2B8A
	fi
	parttool ${root} hidden-
	chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
*********************** END /boot/grub/grub.cfg

*********************** BEGIN /proc/mdstat
cat: /proc/mdstat: No such file or directory
*********************** END /proc/mdstat

*********************** BEGIN /dev/disk/by-id
total 0
lrwxrwxrwx 1 root root  9 Dec 20 21:44 ata-HL-DT-ST_BD-RE_WH14NS40_K9AD6F83804 -> ../../sr0
lrwxrwxrwx 1 root root  9 Dec 20 21:44 ata-Hitachi_HDS723020BLA642_MN1220F32A3W6D -> ../../sdb
lrwxrwxrwx 1 root root 10 Dec 20 21:44 ata-Hitachi_HDS723020BLA642_MN1220F32A3W6D-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 10 Dec 20 21:44 ata-Hitachi_HDS723020BLA642_MN1220F32A3W6D-part2 -> ../../sdb2
lrwxrwxrwx 1 root root 10 Dec 20 21:44 ata-Hitachi_HDS723020BLA642_MN1220F32A3W6D-part5 -> ../../sdb5
lrwxrwxrwx 1 root root 10 Dec 20 21:44 ata-Hitachi_HDS723020BLA642_MN1220F32A3W6D-part6 -> ../../sdb6
lrwxrwxrwx 1 root root  9 Dec 20 21:44 ata-MZ-5EA1000-0D3_S0SENEAC104693 -> ../../sdc
lrwxrwxrwx 1 root root  9 Dec 20 21:44 ata-SAMSUNG_HD501LJ_S0MUJ1NP602051 -> ../../sda
lrwxrwxrwx 1 root root 10 Dec 20 21:44 ata-SAMSUNG_HD501LJ_S0MUJ1NP602051-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-name-MASS2-swap_1 -> ../../dm-2
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-name-MASS2-zfscache -> ../../dm-4
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-name-MASS2-zfslog -> ../../dm-5
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-name-MASS2-zfstank -> ../../dm-1
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-name-sdb5_crypt -> ../../dm-0
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-name-ssd_crypt -> ../../dm-3
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-uuid-CRYPT-LUKS1-8a6627a949fc459d924c219d6a001fbd-ssd_crypt -> ../../dm-3
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-uuid-CRYPT-LUKS1-acead6ebacc743259c3045f0d095e264-sdb5_crypt -> ../../dm-0
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-uuid-LVM-uGUYq84akr7RPNuzfxdDW2RI69T7fFKDJa8YrbWuoJF8ErWRjb2m6BfdnD103wLP -> ../../dm-5
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-uuid-LVM-uGUYq84akr7RPNuzfxdDW2RI69T7fFKDYOAPlxG2QiwpulOBTDtvn2slh8ej1GqM -> ../../dm-2
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-uuid-LVM-uGUYq84akr7RPNuzfxdDW2RI69T7fFKDnmb2R7Dh8XCJ1sZrUmFhptCsGGAyq24c -> ../../dm-4
lrwxrwxrwx 1 root root 10 Dec 20 21:44 dm-uuid-LVM-uGUYq84akr7RPNuzfxdDW2RI69T7fFKDoL2paBRFsBQorR6VSoeflbdiCW6TSqd0 -> ../../dm-1
lrwxrwxrwx 1 root root 10 Dec 20 21:44 lvm-pv-uuid-3R3o1U-07sF-axys-ynIw-qgBQ-IePo-ZtBeMu -> ../../dm-3
lrwxrwxrwx 1 root root 10 Dec 20 21:44 lvm-pv-uuid-hT4tkL-HSne-XUDG-lOc6-GYTl-f6Lt-JtCLTA -> ../../dm-0
lrwxrwxrwx 1 root root  9 Dec 20 21:44 wwn-0x50000f001b602051 -> ../../sda
lrwxrwxrwx 1 root root 10 Dec 20 21:44 wwn-0x50000f001b602051-part1 -> ../../sda1
lrwxrwxrwx 1 root root  9 Dec 20 21:44 wwn-0x5000cca369e0c946 -> ../../sdb
lrwxrwxrwx 1 root root 10 Dec 20 21:44 wwn-0x5000cca369e0c946-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 10 Dec 20 21:44 wwn-0x5000cca369e0c946-part2 -> ../../sdb2
lrwxrwxrwx 1 root root 10 Dec 20 21:44 wwn-0x5000cca369e0c946-part5 -> ../../sdb5
lrwxrwxrwx 1 root root 10 Dec 20 21:44 wwn-0x5000cca369e0c946-part6 -> ../../sdb6
lrwxrwxrwx 1 root root  9 Dec 20 21:44 wwn-0x500253825000d1a5 -> ../../sdc
*********************** END /dev/disk/by-id

*********************** BEGIN /dev/disk/by-uuid
total 0
lrwxrwxrwx 1 root root 10 Dec 20 21:44 40908A2F908A2B8A -> ../../sda1
lrwxrwxrwx 1 root root  9 Dec 20 21:44 8a6627a9-49fc-459d-924c-219d6a001fbd -> ../../sdc
lrwxrwxrwx 1 root root 10 Dec 20 21:44 acead6eb-acc7-4325-9c30-45f0d095e264 -> ../../sdb5
lrwxrwxrwx 1 root root 10 Dec 20 21:44 be829107-5eba-497f-a79f-77d439ff9ff3 -> ../../dm-2
lrwxrwxrwx 1 root root 10 Dec 20 21:44 e6e07121-50eb-4eab-9d6e-192e089d27d9 -> ../../sdb1
*********************** END /dev/disk/by-uuid

-- System Information:
Debian Release: 8.6
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages grub-common depends on:
ii  gettext-base        0.19.3-2
ii  libc6               2.19-18+deb8u6
ii  libdevmapper1.02.1  2:1.02.90-2.2+deb8u1
ii  libfreetype6        2.5.2-3+deb8u1
ii  libfuse2            2.9.3-15+deb8u2
ii  liblzma5            5.1.1alpha+20120614-2+b3
ii  libpng12-0          1.2.50-2+deb8u2
ii  zlib1g              1:1.2.8.dfsg-2+b1

Versions of packages grub-common recommends:
ii  os-prober  1.65

Versions of packages grub-common suggests:
ii  console-setup  1.123
ii  desktop-base   8.0.2
pn  grub-emu       <none>
pn  multiboot-doc  <none>
ii  xorriso        1.3.2-1.1

-- no debconf information



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