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3ware mapping to disk devices in Linux
Hi there
I am trying to map device files to drive serial numbers in Linux. The reason I am trying to do this is mainly because Linux can swap all drive letters at every boot. Yes I know that I can use filesystem labels, mdadm array disk numbers etc, but if a disk fails I want to know exactly and reliably WHICH disk I have to replace (we are speaking about a big disk server here), and I can do that if I can get to the serial number. From the OS just the device name is given to me, not the physical slot (and disk member number in the mdadm array but I would prefer to go the serial number way if possible). Also at RAID array creation (mdadm), in order to do the things well, I need to know a reliable mapping of disk device file to physical slot. With this server I cannot count on drive activity leds being present or functional. Most controllers are good, and with them I can use smartctl -i /dev/sdX... However I have various controllers, and one of them is a 3ware (possibly more than one 3ware in the future) 3ware doesn't work with the command line above, nor with hdparm. With 3ware the only way to make it work is: smartctl -i -d 3ware,PORTNUMBER /dev/twaCONTROLLERNUMBER The problem is that I don't know a way to map the /dev/sdX device to its PORTNUMBER and CONTROLLERNUMBER in the 3ware, so I am stuck again. Please help Thank you |
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3ware mapping to disk devices in Linux
On Tue, 04 Nov 2008 14:31:23 -0500, linuxnewbie1234 wrote:
I am trying to map device files to drive serial numbers in Linux. /sbin/udevadm info -q env -p /block/sda|grep SERIAL_SHORT or /lib/udev/ata_id /dev/sda Regards, Dave Hodgins -- Change nomail.afraid.org to ody.ca to reply by email. (nomail.afraid.org has been set up specifically for use in usenet. Feel free to use it yourself.) |
#3
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3ware mapping to disk devices in Linux
David W. Hodgins wrote:
On Tue, 04 Nov 2008 14:31:23 -0500, linuxnewbie1234 wrote: I am trying to map device files to drive serial numbers in Linux. /sbin/udevadm info -q env -p /block/sda|grep SERIAL_SHORT Oh My Goodness Thank you! This works on 3ware. The serial number is slightly tweaked by 3ware but the numeric part does contain the correct HD serial number. The command does not get a proper serial number on the mobo-integrated SAS controller (LSI 1068E) On 3ware without |grep I seem to be able to also get the PCI slot and the scsi-id hence probably I could determine the 3ware controller ID. Now I have 5 commands, each one works on something but no-one works on everything: Works on integrated SAS and integrated SATA, not on 3wa hdparm -I /dev/sdX | grep -i serial Works on integrated SATA only: hdparm -i /dev/sdX | grep -i serial Works on integrated SATA only: smartctl -a /dev/sdX | grep -i serial Works on integrated SATA and on 3wa /sbin/udevadm info -q all -p /block/sdX | grep ID_SERIAL_SHORT Works on integrated SATA only: /lib/udev/ata_id /dev/sdX or /lib/udev/ata_id /dev/sda This one works on integrated SATA only, doesn't work on 3ware nor on integrated SAS. Thank you |
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