Arch Linux

vit

Member

Registered: 2008-12-28

Posts: 79

md warnings during boot

I have raid1 setup in my system for / and /home.
And during boot I have errors like "[    1.982579] md: could not bd_claim sdb1"
Here is `dmesg | grep md`:

[    1.198706] md: raid0 personality registered for level 0                     
[    1.198707] md: raid1 personality registered for level 1                     
[    1.759684] md: md0 stopped.                                                 
[    1.770871] md: bind<sda1>                                                   
[    1.775167] md: bind<sdb1>                                                   
[    1.784034] raid1: raid set md0 active with 2 out of 2 mirrors
[    1.788331] md0: detected capacity change from 0 to 8191868928
[    1.793467]  md0: unknown partition table
[    1.801598] md: md1 stopped.
[    1.823378] md: bind<sda2>
[    1.832232] md: bind<sdb2>
[    1.845014] raid1: raid set md1 active with 2 out of 2 mirrors
[    1.845057] md1: detected capacity change from 0 to 30719934464
[    1.845969]  md1: unknown partition table
[    1.895435] md: md2 stopped.
[    1.902105] md: bind<sda3>
[    1.906980] md: bind<sdb3>
[    1.917270] raid1: raid set md2 active with 2 out of 2 mirrors
[    1.922159] md2: detected capacity change from 0 to 461195771904
[    1.927866]  md2: unknown partition table
[    1.977747] md: Autodetecting RAID arrays.
[    1.982579] md: could not bd_claim sdb1.
[    1.987380] md: could not bd_claim sdb2.
[    1.992124] md: could not bd_claim sdb3.
[    1.996800] md: could not bd_claim sda1.
[    2.001413] md: could not bd_claim sda2.
[    2.006182] md: could not bd_claim sda3.
[    2.010919] md: Scanned 6 and added 0 devices.
[    2.015638] md: autorun ...
[    2.020283] md: ... autorun DONE.

Kernel 2.6.31-zen2 (compiled today, but it was in earlier builds too).

mdadm conf:

ARRAY /dev/md0 level=raid1 num-devices=2 metadata=0.90 UUID=70bddca9:883230a8:32897dd0:8e68c3ce
ARRAY /dev/md1 level=raid1 num-devices=2 metadata=0.90 UUID=fcad993b:aa222a4d:9030c423:80da52a1
ARRAY /dev/md2 level=raid1 num-devices=2 metadata=0.90 UUID=fd8800af:79b8269e:c1dcedba:48038dfc

Does anybody know what is the problem here?

Last edited by vit (2009-10-06 13:42:25)

lilsirecho

Veteran

Registered: 2003-10-24

Posts: 5,000

Re: md warnings during boot

Are your devices on usb?

---

Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

.:B:.

Forum Fellow

Registered: 2006-11-26

Posts: 5,819

Website

Re: md warnings during boot

I noticed them too on my server's 2.6.31 kernel (custom built kernel). I think it's harmless, /proc/mdstat reports everything's fine, so...

---

Got Leenucks? :: Arch: Power in simplicity :: Get Counted! Registered Linux User #392717 :: Blog thingy

vit

Member

Registered: 2008-12-28

Posts: 79

Re: md warnings during boot

devices are on SATA channels (AHCI in bios).