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тАО11-27-2007 10:36 AM
тАО11-27-2007 10:36 AM
OA firmware upgrade disrupts fibre channel
I had thought this process was supposed to be non-disruptive to the blade servers, but in each of the (Suse Enterprise 10) servers' logs was the following set of messages:
Nov 26 16:28:46 w3b7 kernel: lpfc 0000:10:00.0: 0:1305 Link Down Event x2 received Data: x2 x20 x110
Nov 26 16:28:46 w3b7 kernel: lpfc 0000:10:00.0: 0:1303 Link Up Event x3 received Data: x3 x0 x10 x2
Nov 26 16:28:46 w3b7 kernel: lpfc 0000:10:00.1: 1:1305 Link Down Event x2 received Data: x2 x20 x110
Nov 26 16:28:47 w3b7 kernel: lpfc 0000:10:00.0: 0:0203 Nodev timeout on WWPN 50:6:e:80:14:43:f0:64 NPort x11200 Data: x8 x7 x0
Nov 26 16:28:47 w3b7 kernel: lpfc 0000:10:00.1: 1:1303 Link Up Event x3 received Data: x3 x0 x10 x2
Nov 26 16:28:47 w3b7 kernel: lpfc 0000:10:00.1: 1:0203 Nodev timeout on WWPN 50:6:e:80:14:43:f0:74 NPort x11200 Data: x8 x7 x0
The timing is the same down to the second across every blade, and the time corresponds with the OA upgrade. Based on this, it appears that some aspect of the OA upgrade caused the Brocade 4/24 FC switches to drop their links to every server in the enclosure. Has anyone else seen anything like this? I've searched on the HP website but can't find any reference to it. It seems unbelievable to me that an OA upgrade would have this effect, but I can't come up with any other explanation.
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тАО11-27-2007 04:25 PM
тАО11-27-2007 04:25 PM
Re: OA firmware upgrade disrupts fibre channel
What was the Version of the ilo & OA before ... & to which did u upgrade it to ?
Regards.
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тАО11-28-2007 12:35 AM
тАО11-28-2007 12:35 AM
Re: OA firmware upgrade disrupts fibre channel
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тАО12-01-2008 12:30 PM
тАО12-01-2008 12:30 PM
Re: OA firmware upgrade disrupts fibre channel
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тАО12-01-2008 01:18 PM
тАО12-01-2008 01:18 PM
Re: OA firmware upgrade disrupts fibre channel
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тАО12-01-2008 02:15 PM
тАО12-01-2008 02:15 PM
Re: OA firmware upgrade disrupts fibre channel
Has anyone raised a support call for this?
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тАО12-02-2008 05:06 AM
тАО12-02-2008 05:06 AM
Re: OA firmware upgrade disrupts fibre channel
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тАО12-02-2008 05:47 AM
тАО12-02-2008 05:47 AM
Re: OA firmware upgrade disrupts fibre channel
However, the entire point of iLO is that it is an out-of-band management system. By definition, an out-of-band management system should never insert itself into production behavior unless you tell it to, i.e. you're using it to power cycle a locked-up server. If the tech thinks that it's normal for an OA reboot to cause FC links to flap on the production side, I would advise escalating ASAP.
I just spoke with an associate who's handling our current support ticket and he's basically getting nowhere. The first tech apparently tried to close the ticket by misrepresenting a manager's willingness to apply the latest firmware upgrade, and when it was reassigned to a new tech and kicked up to engineering they refused to even look at it as it was a "one-off event." As I stated before, this is not a one-off event for us.
Their current advice (predictably) is to update to the latest iLO, although they can't point to a specific bugfix in that version that will fix this issue. Since we've seen this happen four times on at least three different firmware versions, I'm skeptical that the latest iLO will fix a problem that's persisted so long across so many versions.
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тАО12-02-2008 07:37 AM
тАО12-02-2008 07:37 AM
Re: OA firmware upgrade disrupts fibre channel
I've got some latest upgrades to do on some equipment in config this week.
I'll try and replicate the SAN link loss on this.
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тАО12-02-2008 07:46 AM
тАО12-02-2008 07:46 AM
Re: OA firmware upgrade disrupts fibre channel
The SAN switch doesn't reboot, but it logs simultaneous link down/up messages from every active blade in the enclosure at the same time the the OA reboots. We don't see this every time, but we've seen it as part of a reboot on a firmware upgrade and we've seen it when the active OA crashed due to a firmware bug. It appears that the OA reboot is interrupting the connections between the HBA in the blade and the SAN switch in the back of the enclosure.
In the interest of full disclosure (and possibly eliminating a variable) we're using the Brocade 4Gb SAN switches in our enclosures. If Sarah is watching this thread and doesn't mind posting what model of SAN switch she's using it may be helpful (especially if it's a different type of SAN switch).