[Linuxtrent] Re: nuova partizione con RAID1
- From: Marco Ciampa <ciampix@xxxxxxxxx>
- To: linuxtrent@xxxxxxxxxxxxx
- Date: Sun, 10 Oct 2010 17:04:06 +0200
On Sat, Oct 09, 2010 at 04:52:06PM +0200, Luca Zucchelli wrote:
> >
> > Strano, fa parte di parted, prova ad installarlo sulla live e riprova
> >
> > io come live uso il cd di installazione di ubuntu server-> ripara sistema
> danneggiato->in avvia in modo ripristino, seleziono non usare un file system
> di root ed accedo alla shell
>
> cat /proc/partitions prima e dopo chroot che da?
> prima di chroot
>
> 8 16 sdb
> 8 17 sdb1
> 8 18 sdd2
> 8 19 sdb3
> 8 0 sda
> 8 1 sda1
> 8 2 sda2
> 8 3 sda3
> 8 4 sda4
> 9 0 md0
> 9 1 md1
> 9 2 md2
>
> dopo chroot
> è uguale
>
ah ecco!
com'è che sda e sdb sono diversi?
md0 è a posto? fsck.ext4 che dice?
in md1 e md2 che c'è? Sono a posto? Sono previste?
in fstab che c'è?
Un esempio di sistema raid1 funzionante:
cat /proc/partitions
major minor #blocks name
8 0 976762584 sda
8 1 975948718 sda1
8 2 811282 sda2
8 16 976762584 sdb
8 17 975948718 sdb1
8 18 811282 sdb2
9 0 975948608 md0
9 1 811200 md1
cat /etc/mdadm/mdadm.conf
# mdadm.conf
#
# Please refer to mdadm.conf(5) for information about this file.
#
# by default, scan all partitions (/proc/partitions) for MD superblocks.
# alternatively, specify devices to scan, using wildcards if desired.
DEVICE partitions
# auto-create devices with Debian standard permissions
CREATE owner=root group=disk mode=0660 auto=yes
# automatically tag new arrays as belonging to the local system
HOMEHOST <system>
# instruct the monitoring daemon where to send mail alerts
MAILADDR root
# definitions of existing MD arrays
ARRAY /dev/md0 level=raid1 num-devices=2
UUID=4b9851e1:0eccdc7f:3e2299d0:94c1272e
ARRAY /dev/md1 level=raid1 num-devices=2
UUID=53d2800b:1912e431:3e2299d0:94c1272e
cat /etc/fstab
# /etc/fstab: filesystem table.
#
# filesystemmountpointtypeoptionsdumppass
UUID=7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91/ext3defaults,errors=remount-ro01
#/dev/md0/ext3defaults,errors=remount-ro01
UUID=2eb21e02-2264-4890-b9ab-71b158982dccnoneswapdefaults00
#/dev/md1noneswapdefaults00
proc/procprocdefaults00
/dev/fd0/mnt/floppyvfatdefaults,user,noauto,showexec,umask=02200
usbdevfs/proc/bus/usbusbdevfsdefaults00
sysfs/syssysfsdefaults00
/dev/sr0/media/dvdromiso9660,udfdefaults,ro,user,noexec,noauto00
/dev/sr1/media/dvdrecorderiso9660,udfdefaults,ro,user,noexec,noauto00
cat /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 $prefix/grubenv ]; then
load_env
fi
set default="0"
if [ "${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="${chosen}"
save_env saved_entry
fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
load_video
insmod gfxterm
fi
terminal_output gfxterm
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
set locale_dir=($root)/boot/grub/locale
set lang=it
insmod gettext
set timeout=5
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
insmod png
if background_image /boot/grub/moreblue-orbit-grub.png ; then
set color_normal=black/black
set color_highlight=magenta/black
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 ###
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-686' --class debian --class
gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
echo'Loading Linux 2.6.32-5-686 ...'
linux/boot/vmlinuz-2.6.32-5-686 root=UUID=7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
ro quiet
echo'Loading initial ramdisk ...'
initrd/boot/initrd.img-2.6.32-5-686
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-686 (recovery mode)' --class
debian --class gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
echo'Loading Linux 2.6.32-5-686 ...'
linux/boot/vmlinuz-2.6.32-5-686 root=UUID=7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
ro single
echo'Loading initial ramdisk ...'
initrd/boot/initrd.img-2.6.32-5-686
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-3-686' --class debian --class
gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
echo'Loading Linux 2.6.32-3-686 ...'
linux/boot/vmlinuz-2.6.32-3-686 root=UUID=7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
ro quiet
echo'Loading initial ramdisk ...'
initrd/boot/initrd.img-2.6.32-3-686
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-3-686 (recovery mode)' --class
debian --class gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
echo'Loading Linux 2.6.32-3-686 ...'
linux/boot/vmlinuz-2.6.32-3-686 root=UUID=7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
ro single
echo'Loading initial ramdisk ...'
initrd/boot/initrd.img-2.6.32-3-686
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
menuentry "Memory test (memtest86+, experimental multiboot)" {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
multiboot /boot/memtest86+_multiboot.bin
}
menuentry "Memory test (memtest86+, serial console 115200, experimental
multiboot)" {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md0)'
search --no-floppy --fs-uuid --set 7e6c0e34-64c6-42c8-9b0a-1b2d6bcc2d91
multiboot /boot/memtest86+_multiboot.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### 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 $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
cat /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX=""
# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"
# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console
# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480
# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true
# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_LINUX_RECOVERY="true"
# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
Spero possa essere utile.
PS: dalla live chrootata prova a fare:
update-initramfs -u
...
--
Marco Ciampa
+--------------------+
| Linux User #78271 |
| FSFE fellow #364 |
+--------------------+
--
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