FreeSource - AltLinux/Sisyphus/admin/CreateMdRAID1onLiveSystem

2008-04-06 15:38:53

�� /Alt Linux / Sisyphus / admin / Create Md RAID 1 on Live System �� 2008-04-06 15:38:53 � 2008-04-19 02:09:04

��:

�� altlinux.org. �� freesource.info ��.

FIXME
How to speed up raid1 resync ?
Just echo large numbers into both min and max resync speed proc entries:
/proc/sys/dev/raid/spped_limit_max and speed_limit_min
e.g. as root do:
echo 200000 > /proc/sys/dev/raid/speed_limit_max
echo 200000 > /proc/sys/dev/raid/speed_limit_min
And watch the speed fly up till it maxes out your hardware. (-:
The above will set both speeds to 200MiB/s which ought to be more than
your devices can do...

2008-03-25 21:10:44

�� /Alt Linux / Sisyphus / admin / Create Md RAID 1 on Live System �� 2008-03-25 21:10:44 � 2008-04-06 15:38:53

��:

rsync -vaPHx --delete --delete-after --numeric-ids / /mnt/newroot/
rsync -vaPHx --delete --delete-after --numeric-ids /usr /mnt/newroot/usr
rsync -vaPHx --delete --delete-after --numeric-ids /var /mnt/newroot/var
��, �� /, /usr, /var. �� -x � rsync, �� . ��, �.�. � �� -�� /mnt, � �� bind-mounts.

��:

rsync -vaPH --delete --delete-after --numeric-ids --exclude='/proc' --exclude='/sys' --exclude='/tmp' \

- - - -exclude='/mnt' / /mnt/newroot/

mkdir -p /mnt/newroot/{proc,sys,tmp,mnt}
chmod 1777 /mnt/newroot/tmp

2008-03-23 23:36:40

�� /Alt Linux / Sisyphus / admin / Create Md RAID 1 on Live System �� 2008-03-23 23:36:40 � 2008-03-25 21:10:44

��:

14. �� grub.
grub --batch <<EOF
device (hd0) /dev/sda
root (hd0,0) # (0 – �� , �� /boot, �� /dev/sdX1, � grub-� �� 0)
setup (hd0)
device (hd0) /dev/sdb
root (hd0,0)
setup (hd0)
quit
EOF
15. �� . �� , �� md raid1 ��, �� HDD
16. �� , �� fdisk /dev/sda � �� FD (Linux RAID Auto)
17. �� raid-��:
18. �� /proc/mdstat, �� , �� (�� /proc/mdstat �� )
19. �� , �� , �� /etc/mdadm.conf ��-�� :
20. �� mdadm
21. �� HDD �� .
��, ��, �� :

��:

14. �� grub, �� , �� shell
15. �� (�� , �� /dev/sda � /dev/sdb):
grub>device (hd0) /dev/sda
grub>root (hd0,0) # (0 – �� , �� /boot, �� /dev/sdX1, � grub-� �� 0)
grub>setup (hd0)
grub>device (hd0) /dev/sdb
grub>root (hd0,0)
grub>setup (hd0)
16. �� . �� , �� md raid1 ��, �� HDD
17. �� , �� fdisk /dev/sda � �� FD (Linux RAID Auto)
18. �� raid-��:
19. �� /proc/mdstat, �� , �� (�� /proc/mdstat �� )
20. �� , �� , �� /etc/mdadm.conf ��-�� :
21. �� mdadm
22. �� HDD �� .

2008-03-23 23:15:08

�� /Alt Linux / Sisyphus / admin / Create Md RAID 1 on Live System �� 2008-03-23 23:15:08 � 2008-03-23 23:36:40

��:

7. �� grub (�� lilo �� raid)
10. �� HDD �� (�� , cp -ax, cpio, rsync � �.�), �� /proc � /sys (�� root). �� rsync:
#!/bin/sh
renice 19 -p $$ ||: ionice -c3 -p$$ ||:
rsync -vaPH --delete --delete-after --numeric-ids --exclude='/proc' --exclude='/sys' --exclude='/tmp' \

- - - -exclude='/mnt' / /mnt/newroot/

mkdir -p /mnt/newroot/{proc,sys,tmp,mnt}
chmod 1777 /mnt/newroot/tmp
�� downtime �� rsync �� – �� init 1

��:

7. �� grub (�.�. lilo �� )
10. �� HDD �� (�� , cp -ax, cpio � �.�), �� /proc � /sys (�� root)

2007-02-05 14:50:01

�� /Alt Linux / Sisyphus / admin / Create Md RAID 1 on Live System �� 2007-02-05 14:50:01 � 2008-03-23 23:15:08

��:

1. �� HDD (/dev/sda), �� .
sfdisk -d /dev/sda | sfdisk /dev/sdb
mdadm -Cv /dev/md1 -b internal --level=1 --raid-devices=2 missing /dev/sdb1
NB: -b internal �� , �.�. �� , � �� .
mkfs.ext3 -E stride=16 /dev/md1
NB: �� mkfs.ext3 -E stride=, �.�. �� . stride=stripe/block-size. �.�. � �� 64/4=16
��. http://wiki.centos.org/HowTos/Disk_Optimization

��:

1. �� HDD (/dev/sda), ��

sfdisk -d /dev/sda | sfdisk /dev/sdb

mdadm -Cv /dev/md1 --level=1 --raid-devices=2 missing /dev/sdb1

mkfs.ext3 /dev/md1

2006-09-12 21:18:19

�� /Alt Linux / Sisyphus / admin / Create Md RAID 1 on Live System �� 2006-09-12 21:18:19 � 2007-02-05 14:50:01

��:

�� HDD
�� md RAID1
��, �� md RAID (�� Compact-�, � ��)
�� 2.6 � Sisyphus

1. �� HDD (/dev/sda), ��

sfdisk -d /dev/sda | sfdisk /dev/sdb

3. �� fdisk /dev/sdb � �� FD (Linux RAID Auto)

mdadm -Cv /dev/md1 --level=1 --raid-devices=2 missing /dev/sdb1

mkfs.ext3 /dev/md1

mkswap /dev/mdX

mkinitrd --with-raid --with raid1 /boot/initrd-`uname -r`-raid1.img `uname -r`

9. �� root (�� /dev/mdX) ��-�� /mnt/raid1/root, �� , �� , �� (�� , �� /mnt/raid1/root/var, � �� -�� /dev/md6, �� /mnt/raid1/root/var/log � � �� -�� /dev/md7)
10. �� HDD �� (�� , cp -ax, cpio � �.�), �� /proc � /sys (�� root)
11. �� chroot /mnt/raid1/root
12. �� /etc/fstab, �� /dev/sdaX �� /dev/mdX
13. �� #/boot/grub/menu.lst## �� :

15. �� (�� , �� /dev/sda � /dev/sdb):

17. �� , �� fdisk /dev/sda � �� FD (Linux RAID Auto)

mdadm /dev/md1 --add /dev/sda1

19. �� /proc/mdstat, �� , �� (�� /proc/mdstat �� )
20. �� , �� , �� /etc/mdadm.conf ��-�� :

p.s. � �� /dev/md* �� . � �� :

service udevd stop

/lib/mkinitd/busybox raidautorun /dev/mdX

��:

* �� HDD
* �� md RAID1
* ��, �� md RAID (�� Compact-�, � ��)
* �� 2.6 � Sisyphus
1. �� HDD (/dev/sda), ��
sfdisk -d /dev/sda | sfdisk /dev/sdb
3. �� fdisk /dev/sdb � �� FD (Linux RAID Auto)
mdadm -Cv /dev/md1 --level=1 --raid-devices=2 missing /dev/sdb1
mkfs.ext3 /dev/md1
mkswap /dev/mdX
mkinitrd --with-raid --with raid1 /boot/initrd-`uname -r`-raid1.img `uname -r`
9. �� root (�� /dev/mdX) ��-�� /mnt/raid1/root, �� , �� , �� (�� , �� /mnt/raid1/root/var, � �� -�� /dev/md6, �� /mnt/raid1/root/var/log � � �� -�� /dev/md7)
10. �� HDD �� (�� , cp -ax, cpio � �.�), �� /proc � /sys (�� root)
11. �� chroot /mnt/raid1/root
12. �� /etc/fstab, �� /dev/sdaX �� /dev/mdX
13. �� /boot/grub/menu.lst �� :
15. �� (�� , �� /dev/sda � /dev/sdb):
17. �� , �� fdisk /dev/sda � �� FD (Linux RAID Auto)
mdadm /dev/md1 --add /dev/sda1
19. �� /proc/mdstat, �� , �� (�� /proc/mdstat �� )
20. �� , �� , �� /etc/mdadm.conf ��-�� :
p.s. � �� /dev/md* �� . � �� :
* service udevd stop
* /lib/mkinitd/busybox raidautorun /dev/mdX

2006-08-01 18:34:37

�� /Alt Linux / Sisyphus / admin / Create Md RAID 1 on Live System �� 2006-08-01 18:34:37 � 2006-09-12 21:18:19

��:

�� , ��-�� .
15. �� (�� , �� /dev/sda � /dev/sdb):
grub>device (hd0) /dev/sda
grub>root (hd0,0) # (0 – �� , �� /boot, �� /dev/sdX1, � grub-� �� 0)
grub>setup (hd0)
grub>device (hd0) /dev/sdb
grub>root (hd0,0)
grub>setup (hd0)

��:

�� , ��-�� (� ��, �� grub-shell)
15. �� . �� :
root (hd0,0) # (0 – �� , �� /boot, �� /dev/sdX1, � grub-� �� 0)
setup (hd0)
map (hd0) (hd1)
map (hd1) (hd0)
root (hd0,0) # ��
setup (hd0) # � ��, ��, �� hd1, �� hd0, �� )
� ��, �� map �� . ��, �� -�� :)

2006-04-05 11:28:35

�� /Alt Linux / Sisyphus / admin / Create Md RAID 1 on Live System �� 2006-04-05 11:28:35 � 2006-08-01 18:34:37

��:

2. �� HDD:

��:

2. �� HDD:

2006-04-05 11:26:02

�� /Alt Linux / Sisyphus / admin / Create Md RAID 1 on Live System �� 2006-04-05 11:26:02 � 2006-04-05 11:28:35

��:

mkinitrd --with-raid --with raid1 /boot/initrd-`uname -r`-raid1.img `uname -r`
# Boot automatically after 3 secs.
initrd (hd0,0)/initrd-2.6.14-vs26-smp-alt5-raid1.img
initrd (hd1,0)/initrd-2.6.14-vs26-smp-alt5-raid1.img
� ��, �� map �� . ��, �� -�� :)
21. �� mdadm
22. �� HDD �� .

��:

mkinitrd --with-raid --with raid1 /boot/initrd-`uname -r`-raid.img `uname -r`
# Boot automatically after 30 secs.
initrd (hd0,0)/initrd-2.6.14-vs26-smp-alt5-raid.img
initrd (hd1,0)/initrd-2.6.14-vs26-smp-alt5-raid.img
� �� mdadm