On 11/06/2010 06:22 AM, Leslie Rhorer wrote: > > >> -----Original Message----- >> From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid- >> owner@xxxxxxxxxxxxxxx] On Behalf Of Phil Turmel >> Sent: Wednesday, November 03, 2010 4:55 PM >> To: Nat Makarevitch >> Cc: linux-raid@xxxxxxxxxxxxxxx >> Subject: Re: Determining which spindle is out of order >> >> On 11/3/2010 2:13 PM, Nat Makarevitch wrote: >>> Hi, >>> >>> After a spindle (physical hard disk, a "drive") failure in a "md" RAID >> array, >>> how can we know which spindle must be replaced? >>> >>> We want to avoid extracting a working spindle by mistakenly thinking it >> is the >>> faulty one... >> >> I wrote a little script that would tell me device name and serial number >> for each host port on my motherboard, along with anything else that lists >> a scsi host in sysfs. Output like so: >> >> Controller device @ pci0000:00/0000:00:1c.1/0000:06:00.0 [ahci] >> RAID bus controller: Marvell Technology Group Ltd. 88SE6145 SATA II PCI- >> E controller (rev a1) >> host4: [Empty] >> host5: /dev/sdd ATA WDC WD5000AAKS-7 {SN: WD-WMAWF1370668} >> host6: [Empty] >> host7: [Empty] >> host8: [Empty] >> Controller device @ pci0000:00/0000:00:1f.1 [ata_piix] >> IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller >> (rev 01) >> host9: [Empty] >> host10: [Empty] >> Controller device @ pci0000:00/0000:00:1f.2 [ahci] >> SATA controller: Intel Corporation 82801GR/GH (ICH7 Family) SATA AHCI >> Controller (rev 01) >> host0: /dev/sda ATA ST31000333AS {SN: 9TE1LTW0} >> host1: /dev/sdb ATA ST31000333AS {SN: 9TE1MAJT} >> host2: /dev/sdc ATA ST31000333AS {SN: 9TE1MV1R} >> host3: /dev/sr0 HL-DT-ST BD-RE GBW-H20L >> >> Shows me my empty ports, too. As long as I keep my cables straight to my >> hot-swap bays, getting the right drive is a snap. > > I haven't had a chance to dig into the script, but it doesn't > produce any output when I run it on one of my servers, and on the other one > it produces errors on line 7, but otherwise seems to work. > Thanks for the feedback. The script only looks in sysfs for controllers implementing the scsi_host interface. So it won't pick up anything using the legacy IDE interface. If that's not the case on the first server, I'd like to see lspci -vvv for the controller in question. As for the errors on line #7, that's likely to be the whitespace problem that Roman pointed out. Based on his comment, I've adjusted the script to be more robust (a little faster, too). Please give it a try: #! /bin/bash # # Examine specific system host devices to identify the drives attached # function describe_controller () { unset SUBSYSTEM PCI_ID DEVICE PCI_SLOT_NAME Manufacturer Product Serial eval `udevadm info --query=all --path="$1" | \ sed -rn -e 's/^E: (\w+)=(.+)$/\1="\2"/;T;p'` echo "Controller device @ ${1##/sys/devices/} [$DRIVER]" if [[ -n "$PCI_SLOT_NAME" ]] ; then echo -e " `lspci -s $PCI_SLOT_NAME |cut -d\ -f2-`" return fi if [[ "${MODALIAS:0:4}" == "usb:" ]] ; then eval `lsusb -D ${DEVICE/proc/dev/} | \ sed -rn -e 's% *i(Manufacturer|Product|Serial) +[0-9]+ +(.+) *$%\1="\2"%;T;p'` echo -e " [$Manufacturer] $Product {SN: $Serial}" return fi echo -e " $SUBSYSTEM $MODALIAS" } function describe_device () { targ=${1%/block/*} vnd="`cat $targ/vendor`" mdl=`cat $targ/model` rdev=`readlink -f "$1"` if [[ -d $rdev ]] ; then bdev="`basename $rdev`" sn="`sginfo -s /dev/$bdev | \ sed -rn -e \"/Serial Number/{s%^.+' *(.+) *'.*\\\$%\\\\1%;p;q}\"`" &>/dev/null if [[ -n "$sn" ]] ; then echo -e " $bhost: `echo /dev/$bdev $vnd $mdl {SN: $sn}`" else echo -e " $bhost: `echo /dev/$bdev $vnd $mdl`" fi else echo -e " $bhost: Unknown $rdev" fi } function check_host () { local found=0 local pController= while read shost ; do host=`dirname "$shost"` controller=`dirname "$host"` bhost=`basename "$host"` if [[ "$controller" != "$pController" ]] ; then pController="$controller" describe_controller "$controller" fi for dev in $host/target*/*/block/* ; do if [[ "${dev: -1}" == '*' ]] ; then echo -e " $bhost: [Empty]" else describe_device "$dev" fi done done } find /sys/devices/ -name scsi_host |check_host -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
