Q: failing over from MDC02 back to MDC01

Looking for some advice on an XSan MetaData controller problem.  Last week, we had a failover from our primary MetaData controler (metasvr01) to our backup MetaData Controller (metasvr02).  So far, so good.

After some investigation, it looked like metasvr01 had locked up - so we rebooted it.  It appears to have come back alive somewhat normally, except the cvadmin command is not seeing both MetaData servers (like it used to).

Should it be "safe" to try a metadata server failover to metasvr01?

Are there any potential problems / "gotcha's" we should be aware of?

Here's the output from metasvr01:

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metasvr01:~ metasvr01$ sudo cvadmin

Password:

Xsan Administrator

Enter command(s)

For command help, enter "help" or "?".

List FSS

File System Services (* indicates service is in control of FS):

1> EditB[0]         located on metasvr01.private:49248 (pid 140)

2> EditA[0]         located on metasvr01.private:49247 (pid 139)

No FSSs are active.

Select FSM "none"

Here's the output from metasvr02:

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metasvr02:~ metasvr02$ sudo cvadmin

Password:

Xsan Administrator

Enter command(s)

For command help, enter "help" or "?".

List FSS

File System Services (* indicates service is in control of FS):

1>*EditB[0]         located on metasvr02.private:49200 (pid 128)

2>*EditA[0]         located on metasvr02.private:49201 (pid 127)

Select FSM "none"

NOTE:

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Prior to this incident, we would see both metadata servers (on both metasvr01 and metasvr02) - with the "active" one having the asterisk indicating correctly.

Original XSan / XRaid systems.

Still running XSan version 1.4.x

Here are the details regarding metasvr01:

OS/X Server 10.5.5

Normally serving as the primary / active metadata controller.

Here are the details regarding metasvr02:

OS/X Server 10.5.5

Normally serving as the secondary / backup metadata controller,

                         secondary / backup Open Directory Server,

                         secondary / backup DNS server

Here are the details regarding xsangw01:

OS/X Server 10.5.5

Normally serving as the primary / master Open Directory server,

                         primary / master DNS server,

                         smb / afp shares throughout the LAN.

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One final set of notes regarding these servers.  Over the last couple of months, the servers have been increasingly "problematic".  So far, we've lost the following capabilities on them:

- no more ARD access (generally)

- no more local KB, Mouse, & Monitor access (generally)

- no more XSan GUI / Server tools GUI access

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