Salut!
Versiunea scurta: la fiecare reboot, array-ul raid1 facut in software
porneste faulty, doar cu un disc. Poate fi rebuild-uit, e OK _dar_ la
reboot e in acceeasi stare, faulty.
Aveti vreo idee despre cum pot rezolva problema?
Versiunea lunga:
Am 2 diskuri SATA pe o masina. Doua partitii (/dev/sda3, /dev/sdb3) sunt
puse in software-raid-1. La fiecare reboot array-ul porneste doar cu
/dev/sdb3. Dupa "mdadm --add /dev/md1 /dev/sda3" merge OK. La reboot e
iar "degraded". Iata o demonstratie mai jos [trebuie sa ma credeti pe
cuvant ca e faulty la reboot :)]:
=== cut here ===
vault:~# cat /proc/mdstat | grep -A1 md1
md1 : active raid1 sdb3[1]
10008384 blocks [2/1] [_U]
vault:~# date
Wed Oct 5 18:46:13 EEST 2005
vault:~# mdadm --add /dev/md1 /dev/sda3
mdadm: hot added /dev/sda3
vault:~# date
Wed Oct 5 18:59:49 EEST 2005
vault:~# cat /proc/mdstat | grep -A1 md1
md1 : active raid1 sda3[0] sdb3[1]
10008384 blocks [2/2] [UU]
=== and here ===
Folosesc Debian/stable stock-kernel (2.6.8-2-686-smp) deci si initrd
(md-ul e modul), partitiile sunt marcate ca "Linux raid autodetect",
boot-loader-ul e GRUB. FYI, mai jos, (hd0,0) e /dev/sda1 care e pus in
software-raid-1 cu /dev/sdb1 ca /dev/md0 si e montat ca /boot. Merge OK.
Iata mai jos chestii relevante din configuratii:
=== cut here ===
KERNEL
------
vault:~# uname -a
Linux vault 2.6.8-2-686-smp #1 SMP Thu May 19 17:27:55 JST 2005 i686
GNU/Linux
PARTITII
--------
vault:~# sfdisk -l /dev/sda | grep sda3
/dev/sda3 * 132 1377 1246 10008495 fd Linux raid autodetect
vault:~# sfdisk -l /dev/sdb | grep sdb3
/dev/sdb3 132 1377 1246 10008495 fd Linux raid autodetect
KERNEL CMDLINE
--------------
vault:~# cat /proc/cmdline
root=/dev/md1 md=1,/dev/sda3,/dev/sdb3 ramdisk_size=16384 ro
GRUB CONFIG
-----------
vault:~# cat /boot/grub/menu.lst | grep -A5 2.6.8-2-686-smp
title Debian GNU/Linux, kernel 2.6.8-2-686-smp (RAID)
root (hd0,0)
kernel /vmlinuz-2.6.8-2-686-smp root=/dev/md1
md=1,/dev/sda3,/dev/sdb3 ramdisk_size=16384 ro
initrd /initrd.img-2.6.8-2-686-smp
savedefault
boot
=== and here ===
Vreo idee?
--
GRN
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