[Lustre-discuss] Getting weird disk errors, no apparent impact

[LaoTsao 老曹]

https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_SMI-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=RDACDVR60002500-09.03.0BC02.0013-LX-G-F@CDS-CDS_SMI
rdac


On 8/13/2010 12:05 PM, LaoTsao wrote:
> U mean stk 2540?
> Iirc one can download drivers from oracle sun site
>
> ------- Original message -------
>> From: David Noriega <tsk133 at my.utsa.edu>
>> To: lustre-discuss at lists.lustre.org
>> Sent: 13.8.'10,  11:51
>>
>> We have three Sun StorageTek 2150, one connected to the metadata
>> server and two crossconnected to the two data storage nodes. They are
>> connected via fiber using the qla2xxx driver that comes with CentOS
>> 5.5.  The multipath daemon has the following config:
>>
>> defaults {
>>         udev_dir                /dev
>>         polling_interval        10
>>         selector                "round-robin 0"
>>         path_grouping_policy    multibus
>>         getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"
>>         prio_callout "/sbin/mpath_prio_rdac /dev/%n"
>>         path_checker            rdac
>>         rr_min_io               100
>>         max_fds                 8192
>>         rr_weight               priorities
>>         failback                immediate
>>         no_path_retry           fail
>>         user_friendly_names     yes
>> }
>>
>> Comment out from multipath.conf file:
>>
>> blacklist {
>>         devnode "*"
>> }
>>
>>
>> On Fri, Aug 13, 2010 at 4:31 AM, Wojciech Turek <wjt27 at cam.ac.uk> wrote:
>>> Hi David,
>>>
>>> I have seen simmilar errors given out by some storage arrays. There 
>>> were
>>> caused by arrays exporting volumes via more then a single path 
>>> without multi
>>> path driver installed or configured properly. Some times the array
>>> controllers requires a special driver to be installed on Linux host 
>>> (for
>>> example RDAC mpp driver) to properly present and handle configured 
>>> volumes
>>> in the OS. What sort of disk raid array are you using?
>>>
>>> Best gerads,
>>>
>>> Wojciech
>>>
>>> On 12 August 2010 17:58, David Noriega <tsk133 at my.utsa.edu> wrote:
>>>>
>>>> We just setup a lustre system, and all looks good, but there is this
>>>> nagging error thats floating about. When I reboot any of the nodes, be
>>>> it a OSS or MDS, I will get this:
>>>>
>>>> [root at meta1 ~]# dmesg | grep sdc
>>>> sdc : very big device. try to use READ CAPACITY(16).
>>>> SCSI device sdc: 4878622720 512-byte hdwr sectors (2497855 MB)
>>>> sdc: Write Protect is off
>>>> sdc: Mode Sense: 77 00 10 08
>>>> SCSI device sdc: drive cache: write back w/ FUA
>>>> sdc : very big device. try to use READ CAPACITY(16).
>>>> SCSI device sdc: 4878622720 512-byte hdwr sectors (2497855 MB)
>>>> sdc: Write Protect is off
>>>> sdc: Mode Sense: 77 00 10 08
>>>> SCSI device sdc: drive cache: write back w/ FUA
>>>>  sdc:end_request: I/O error, dev sdc, sector 0
>>>> Buffer I/O error on device sdc, logical block 0
>>>> end_request: I/O error, dev sdc, sector 0
>>>>
>>>> This doesn't seem to affect anything. fdisk -l doesn't even report the
>>>> device. The same(thought of course different block device sdd, sde, on
>>>> the OSSs), happens on all the nodes.
>>>>
>>>> If I run pvdisplay or lvdisplay, I'll get this:
>>>> /dev/sdc: read failed after 0 of 4096 at 0: Input/output error
>>>>
>>>> Any ideas?
>>>> David
>>>> -- 
>>>> Personally, I liked the university. They gave us money and facilities,
>>>> we didn't have to produce anything! You've never been out of college!
>>>> You don't know what it's like out there! I've worked in the private
>>>> sector. They expect results. -Ray Ghostbusters
>>>> _______________________________________________
>>>> Lustre-discuss mailing list
>>>> Lustre-discuss at lists.lustre.org
>>>> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>>>
>>>
>>>
>>> -- 
>>> Wojciech Turek
>>>
>>> Senior System Architect
>>>
>>> High Performance Computing Service
>>> University of Cambridge
>>> Email: wjt27 at cam.ac.uk
>>> Tel: (+)44 1223 763517
>>>
>>
>>
>>
>> -- 
>> Personally, I liked the university. They gave us money and facilities,
>> we didn't have to produce anything! You've never been out of college!
>> You don't know what it's like out there! I've worked in the private
>> sector. They expect results. -Ray Ghostbusters
>> _______________________________________________
>> Lustre-discuss mailing list
>> Lustre-discuss at lists.lustre.org
>> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>
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