Re: jbod + SMART : how to identify failing disks ?

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Hi,

Try looking for file "locate" in a folder named "Slot X" where X in the number of the slot, then echoing 1 in the "locate" file will make the led blink. :

# find /sys -name "locate"  |grep Slot
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 01/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 02/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 03/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 04/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 05/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 06/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 07/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 08/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 09/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 10/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 11/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 12/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 13/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 14/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 15/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 16/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 17/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 18/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 19/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 20/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 21/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 22/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 23/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 24/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 25/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 26/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 27/locate
/sys/devices/pci0000:00/0000:00:03.0/0000:06:00.0/host6/port-6:0/expander-6:0/port-6:0:28/end_device-6:0:28/target6:0:28/6:0:28:0/enclosure/6:0:28:0/Slot 28/locate

LSI 9200-8e with a Supermicro JBOD 28 slots, Ubuntu 12.04, 3.13 kernel.

Cheers


Le 12/11/2014 14:05, SCHAER Frederic a écrit :

Hi,

 

I’m used to RAID software giving me the failing disks  slots, and most often blinking the disks on the disk bays.

I recently installed a  DELL “6GB HBA SAS” JBOD card, said to be an LSI 2008 one, and I now have to identify 3 pre-failed disks (so says S.M.A.R.T) .

 

Since this is an LSI, I thought I’d use MegaCli to identify the disks slot, but MegaCli does not see the HBA card.

Then I found the LSI “sas2ircu” utility, but again, this one fails at giving me the disk slots (it finds the disks, serials and others, but slot is always 0)

Because of this, I’m going to head over to the disk bay and unplug the disk which I think corresponds to the alphabetical order in linux, and see if it’s the correct one…. But even if this is correct this time, it might not be next time.

 

But this makes me wonder : how do you guys, Ceph users, manage your disks if you really have JBOD servers ?

I can’t imagine having to guess slots that each time, and I can’t imagine neither creating serial number stickers for every single disk I could have to manage …

Is there any specific advice reguarding JBOD cards people should (not) use in their systems ?

Any magical way to “blink” a drive in linux ?

 

Thanks && regards



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-- 
Cédric
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