Centos7, sw raid1, grub2

[Martin Och]

Dobry vecer,

mohl by me, prosim, nekdo nasmerovat nebo poradit?

Mam "server" se dvema disky, chci je mit v sw RAID1, a pokud jeden zdechne, tak aby system nabootoval z prezivsiho,
vadny disk se nasledne vymenil RAID rebuildnul, a system mohl nadale fungovat, a treba po rebootu z toho noveho disku zase nabootoval.

V Centos5 jsem to mel rozchozene jak popisuji, ale v Centos7 se nemuzu hnout.
Dokud jsou v systemu oba disky, tak server bootuje, neni problem.
Ale jakmile jeden disk odpojim, lhostejno ktery, tak to nedobootuje, skonci to nekde kde oznamuje jake disky nasel...

Domnivam se, ze je neco zmrseneho s grub2, ale uz nevim co bych zkusil.
Nize uvadim asi to nejzajimavejsi z rozlozeni disku a raidu. Nic sloziteho a neobvykleho to IMHO neni.

Napada Vas nekoho co delam spatne?

Diky

--
Martin

# fdisk -l

Disk /dev/sda: 128.0 GB, 128035676160 bytes, 250069680 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00023f91

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     1050623      524288   fd  Linux raid autodetect
/dev/sda2         1050624    32301055    15625216   fd  Linux raid autodetect
/dev/sda3        32301056    71362559    19530752   fd  Linux raid autodetect

Disk /dev/sdb: 128.0 GB, 128035676160 bytes, 250069680 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000f2c7c

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048     1050623      524288   fd  Linux raid autodetect
/dev/sdb2         1050624    32301055    15625216   fd  Linux raid autodetect
/dev/sdb3        32301056    71362559    19530752   fd  Linux raid autodetect

Disk /dev/md0: 536 MB, 536805376 bytes, 1048448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/md1: 16.0 GB, 16000155648 bytes, 31250304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/md2: 20.0 GB, 19999424512 bytes, 39061376 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


# blkid
/dev/sda1: UUID="7947dfeb-5323-adf1-0489-4333532a878b" TYPE="linux_raid_member"
/dev/sda2: UUID="16d646dd-5019-b251-0489-4333532a878b" TYPE="linux_raid_member"
/dev/sda3: UUID="4820e3a0-178f-c87b-0489-4333532a878b" TYPE="linux_raid_member"
/dev/sdb1: UUID="7947dfeb-5323-adf1-0489-4333532a878b" TYPE="linux_raid_member"
/dev/sdb2: UUID="16d646dd-5019-b251-0489-4333532a878b" TYPE="linux_raid_member"
/dev/sdb3: UUID="4820e3a0-178f-c87b-0489-4333532a878b" TYPE="linux_raid_member"
/dev/md0: LABEL="/boot" UUID="892435bb-9b85-41d6-b153-ff2f35863949" TYPE="ext4"
/dev/md1: LABEL="/" UUID="8dc43c95-cc14-4499-a4ba-874c5ac2873d" TYPE="ext4"
/dev/md2: LABEL="/home" UUID="bf250c1c-65d5-4b94-9c34-9074ef4b2a30" TYPE="ext4"