failing to boot pass mdadm monitor

Peter M. Petrakis peter.petrakis at canonical.com
Mon Mar 12 21:43:24 UTC 2012



On 03/12/2012 05:22 PM, Asif Iqbal wrote:
> On Mon, Mar 12, 2012 at 5:11 PM, Peter M. Petrakis
> <peter.petrakis at canonical.com>  wrote:
>>
>>
>> On 03/12/2012 04:13 PM, Asif Iqbal wrote:
>>>
>>> I am failing to boot this server x4270 pass the mdadm --monitor.
>>> Installed lucid amd64. This is a first install.
>>>
>>> details: http://paste.ubuntu.com/880895/
>>>
>>> It boots all the way in recovery mode. what gives?
>>>
>>
>> I would say your problems began once your partition detection went
>> inconsistent.
>>
>> [   26.603469] sd 6:0:3:0: [sdd] 585937500 512-byte logical blocks: (300
>> GB/279 GiB)
>> [   26.603599] GPT:Primary header thinks Alt. header is not at the end of
>> the disk.
>> [   26.603600] GPT:585937498 != 585937499
>> [   26.603602] GPT:Alternate GPT header not at the end of the disk.
>> [   26.603603] GPT:585937498 != 585937499
>>
>> which is coming from fs/partitions/efi.c
>> http://lxr.linux.no/linux+v3.2.9/fs/partitions/efi.c#L487
>>
>>   494        if (le64_to_cpu(agpt->my_lba) != lastlba) {
>>   495                printk(KERN_WARNING
>>   496                       "GPT:Alternate GPT header not at the end of the
>> disk.\n");
>>   497                printk(KERN_WARNING "GPT:%lld != %lld\n",
>>   498                        (unsigned long long)le64_to_cpu(agpt->my_lba),
>>   499                        (unsigned long long)lastlba);
>>   500                error_found++;
>>   501        }
>>
>> The math for lastlba seems correct, 585937500 - 1ULL, a quick google shows
>> the raw size is consistent with what you have. So the question is how
>> did 585937498 get computed? Would someone with some more experience with
>> GPT partitions care to comment?
>>
>> It doesn't look like your system successfully recovered from find_valid_gpt
>> or we would have seen "Alternate GPT is invalid, using primary GPT." or
>> "Primary GPT is invalid, using alternate GPT." in the logs. Those
>> partitions,
>> or what's left of them, is being presented to mdadm for assembly.
>>
>> This part is really weird.
>>
>> [   27.929744] mdadm: sending ioctl 1261 to a partition!
>> [   27.935401] mdadm: sending ioctl 1261 to a partition!
>> [   27.941905] mdadm: sending ioctl 1261 to a partition!
>>
>> Where 1261 is #define __NR_set_mempolicy              1261
>>
>> I don't think that has any business being sent to a partition. At the
>> moment,
>> I can't explain how this event, and the GPT fault could be related.
>>
>> [   28.679619] md1: detected capacity change from 0 to 146360172544
>> [   28.684287]  md1: unknown partition table
>> [   28.709647] mdadm: sending ioctl 1261 to a partition!
>> [   28.713255] mdadm: sending ioctl 1261 to a partition!
>> Begin: Running /scripts/local-premount ...
>> Done.
>> [   29.082318] EXT3-fs: INFO: recovery required on readonly filesystem.
>> [   29.088849] EXT3-fs: write access will be enabled during recovery.
>> [   29.252295] kjournald starting.  Commit interval 5 seconds
>> [   29.252387] EXT3-fs: recovery complete.
>> [   29.265115] EXT3-fs: mounted filesystem with ordered data mode.
>>
>> I really don't know what shape your backing store is in, noting your
>> second post, I'm surprised your disks are readable.
>>
>> So... what changed? Have you upgraded system firmware recently,
>> kernel upgrades, or anything at all really? I see you have an external
>> storage enclosure, has that seen any changes either?
>
> This is a new box. This is the first install. There is nothing attached to it.

Then you either have questionable equipment, bad install medium, or this platform isn't fully supported
on this release of Ubuntu. I misspoke when I said "external" storage enclosure. there
is a SES enclosure.

[   26.628621] scsi 6:0:10:0: Enclosure         LSILOGIC SASX28 A.0       502E PQ: 0 ANSI: 5
[   26.633357] scsi 6:0:10:0: Attached scsi generic sg10 type 13
[   27.380344] sd 6:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA

Not knowing what the platform was, I assumed it was external.

Looking back on your post, you called this a x4270. Is that a Sun x4270?

Peter

>
>
>>
>> Peter
>>
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>
>
>




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