[OpenIndiana-discuss] Mapping devices in OI to physical devices

[Jason Matthews]

i wrote my own leveraging some lsi tools, fmtopo, and 100 ugly lines of perl. 

in some smaller systems where i dont have lsi cards i just label the drive carrier with the last five chars of the wwn. 

i have offered to pay a bounty gir someone solve this problem for newisys/sanmina-sc disk chassis. alas, no one responded. 

nexenta has a solution but they are not sharing. 

j. 

Sent from Jasons' hand held

On Jan 22, 2013, at 9:26 AM, Len Zaifman <leonardz at sickkids.ca> wrote:

> We have just had a major system meltdown and it took several days to fix.
> 
> What we would have liked is 2 things we had on thumpers (Old SUN ZFS systems)
> 
> 1) A tool to show the mapping of a solaris device name to a physical location
> 2) A tool to turn on the light on a disk via its solaris device name.
> 
> The process below is too painful, and we have other devices whose disks may go bad. Does either 1 or 2 above exist in openindiana? I could not find it, if it does.
> 
> Thanks.
> 
> The issue was:
> 
> OI (OpenIndiana Development oi_151a X86) reported:
> 
> 
> Jan 22 10:57:43 archivea scsi: [ID 107833 kern.warning] WARNING: /pci at 7a,0/pci8086,3408 at 1/pci1000,3040 at 0 (mpt_sas10):
> Jan 22 10:57:43 archivea        Disconnected command timeout for Target 18
> Jan 22 10:57:43 archivea scsi: [ID 365881 kern.info] /pci at 7a,0/pci8086,3408 at 1/pci1000,3040 at 0 (mpt_sas10):
> Jan 22 10:57:43 archivea        Log info 0x31140000 received for target 18.
> Jan 22 10:57:43 archivea        scsi_status=0x0, ioc_status=0x8048, scsi_state=0xc
> 
> zfs performance went through the floor  and was intolerable(< 1 mb/sec where we had hundreds of MB/sec for resilver/scrubs and 100 MB/sec through the filesystem).
> 
> The defective disk was one of 45 disks in a Supermicro Jbod system (SC847E26-RJBOD1)
> 
> We finally found which disk it was by comparing serial numbers reported by iostat, disks that reported errors and the actual disk serial number (we pulled all 45 disks out to do this mapping). we do not want to repeat this process for our other devices.
> 
> 
> Len Zaifman
> Systems Manager, High Performance Systems
> The Centre for Computational Medicine
> The Hospital for Sick Children
> 555 University Ave.
> Toronto, Ont M5G 1X8
> 
> tel: 416-813-5513
> email: leonardz at sickkids.ca
> 
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