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On Thursday 20 December 2007, Stroller wrote: |
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> I haven't done much digging yet, but thought a quick show of hands |
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> here might save some time. It looks like the SCSI hot-swap / RAID |
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> controller uses an AMI / LSI MegaRAID driver which is (?) part of the |
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> main kernel - anyone know if that does status updates (dead-hard |
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> drives &c) to the syslog? Does it depend on any userland utilities |
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> that are only available as RPM or whatever? |
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I maintain a few Poweredges, I think mostly 2950. Just yesterday we swapped a |
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drive on the Fusion MPT SAS controller. We were prompted to take the drive |
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out of service by an email from 'smartd'. I couldn't find any evidence of |
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bad sectors or I/O timeouts in /var/log/messages, so this must be the SMART |
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prefailure it purported to be in the email. In /etc/smartd.conf I use: |
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DEVICESCAN -H -l error -l selftest -t -I 194 -W 5,45,48 -R 5 -R 194 -R 231 -m |
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alerts@××××××××.com |
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After failing and removing the drive from the array using 'mdadm', we tried |
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hotswapping the drive, and whilst nothing untoward happened when we pulled |
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the drive there were no kernel messages either. I was expecting something |
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similar to when I've hotplugged SATA drives on my desktop machine. We had to |
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reboot the server to get it to see the replacement drive. Perhaps there's |
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some /proc/ or /sys/ setting to trigger a rescan of the SCSI bus, but I |
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couldn't find it. |
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Other than those oddities the drive swap went well. |
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Cheers, |
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Steve. |
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