[DRBD-user] fresh drbd setup on Ubuntu, a few issues

[Steve Wray]

Hi there,

I'm currently setting up drbd/heartbeat on a pair of Ubuntu (Hardy) VMs 
running under Xen 3.2

Heartbeat 2.1.3
DRBD 8.0.14

However, I get the first of these errors with or without heartbeat.

At boot time I see:

Mar  3 13:31:42 zimbra-ldap1 kernel: [    5.034943] drbd0: disk( Attaching 
-> UpToDate )
Mar  3 13:31:42 zimbra-ldap1 kernel: [    5.034943] blkfront: sdb2: write 
barrier op failed
Mar  3 13:31:42 zimbra-ldap1 kernel: [    5.034943] blkfront: sdb2: 
barriers disabled
Mar  3 13:31:42 zimbra-ldap1 kernel: [    5.034943] end_request: I/O error, 
dev sdb2, sector 0
Mar  3 13:31:42 zimbra-ldap1 kernel: [    5.034943] end_request: I/O error, 
dev sdb2, sector 0
Mar  3 13:31:42 zimbra-ldap1 kernel: [    5.035288] drbd0: Barriers not 
supported on meta data device - disabling


I don't get the I/O errors all the time, just at boot.


With heartbeat, I also see an error like this:

zimbra-ldap2 login: [  246.542836] drbd0: local disk flush failed with 
status -95

on both nodes at the point where heartbeat kicks in and decides to mount 
the drbd device on one of the nodes. The message appears on both nodes.


Can someone please let me know how worried I should be about these messages?

Thanks!!



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