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root on /cluster/members/member1/boot_partition: I/O error

Nuwan Alwis
Valued Contributor

root on /cluster/members/member1/boot_partition: I/O error

Hi All,
Im totally new to Tru64 clusters,
i just need to resolve following above message papers on one of our servers.

Msg:
user_cfg_pt: reconfigured

root_mounted_rw: reconfigured

Mounting /cluster/members/member1/boot_partition (boot filesystem)

root2_domain#root on /cluster/members/member1/boot_partition: I/O error

mountroot: Please correct the mount problem and reboot

CMS: Joining deferred filesystem sets



INIT: SINGLE-USER MODE

Please Help....
6 REPLIES
Rob Leadbeater
Honored Contributor

Re: root on /cluster/members/member1/boot_partition: I/O error

Hi,

Given the I/O error I'll guess that you have a hardware fault of some form.

Can you give us some more information on the disks involved ?

The output of "show dev" and "show boot*" from the SRM prompt (P00>>>) would be useful.

Cheers,

Rob
Nuwan Alwis
Valued Contributor

Re: root on /cluster/members/member1/boot_partition: I/O error

Hi Rob,
Thanks for your quick reply.
According to info i found this server is booting from a MSA1000.
i checked it but couldnt found any faulty disks on it.
also i see that this goes to single user mode due to quorum activation.
if i disable it will it boot ?
if so how to do so...?

logs:

P00ADBM30>sh dev d
dga201.1001.0.4.1 $1$DGA201 COMPAQ MSA1000 VOLUME 4.48
dgb201.1002.0.5.1 $1$DGA201 COMPAQ MSA1000 VOLUME 4.48
dka0.0.0.1.1 DKA0 COMPAQ BD018635C4 B021
dka100.1.0.1.1 DKA100 COMPAQ BD018635C4 B021
dka200.2.0.1.1 DKA200 COMPAQ BD0186459A B008
dka300.3.0.1.1 DKA300 COMPAQ BD01864552 3B05
dkd0.0.0.3000.0 DKD0 COMPAQ BD018635C4 B017
dkd200.2.0.3000.0 DKD200 COMPAQ BD0186349B 3B11
dkd300.3.0.3000.0 DKD300 COMPAQ BD018635C4 B017
dkd400.4.0.3000.0 DKD400 COMPAQ BD0186349B 3B12
dkd500.5.0.3000.0 DKD500 COMPAQ BD0186459A B008
dqa0.0.0.15.0 DQA0 Compaq CRD-8402B 1.03
dva0.0.0.1000.0 DVA0
P00ADBM30>

------------------------------------------

Mounting / (root)
user_cfg_pt: reconfigured
root_mounted_rw: reconfigured
Mounting /cluster/members/member1/boot_partition (boot filesystem)
root2_domain#root on /cluster/members/member1/boot_partition: I/O error
mountroot: Please correct the mount problem and reboot
CMS: Joining deferred filesystem sets

INIT: SINGLE-USER MODE
# CNX QDISK: Successfully claimed quorum disk, adding 1 vote.
Rob Leadbeater
Honored Contributor

Re: root on /cluster/members/member1/boot_partition: I/O error

Hi,

Do you know what your boot disk is ?

The output of "show boot*" would be really useful...

Cheers,

Rob
Ivan Ferreira
Honored Contributor

Re: root on /cluster/members/member1/boot_partition: I/O error

From the second cluster node, try to identify which device is the member boot disk.

ls /etc/fdmns/root2_domain

What looks extrange to me is that is trying to mount root2_domain#root into /cluster/members/member1/boot_partition, it should mount over /cluster/members/member2/boot_partition.

After you identified the disk, check the status of the device with:

view devices
hwmgr show scsi -id -full

Try to check the label of the disk with:

disklabel -r

Post the ouput of all commands.
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
Nuwan Alwis
Valued Contributor

Re: root on /cluster/members/member1/boot_partition: I/O error

Thanks for the support. I really appreciate it.
Wel at the moment one of our support team member attending to this case and i will pass this info to him. ill get back to you for a help after that.
Kapil Jha
Honored Contributor

Re: root on /cluster/members/member1/boot_partition: I/O error

I suppose its a 2 node cluster and this 1st member is not joining the cluster because it is facing some problem with mounting boot_pattition.
Your cluster should be UP with second member with quorum disk from this second member as said above....you will have to check if that device is OK or having some problem.
I/O error clearly says that there must be some problem with the disk.As suggested above you should use disklabel.
Or if u plysically near system yout can use hwmgr with flashlight option to locate boot disk of member 1.

BR
Kapil+
I am in this small bowl, I wane see the real world......