centos-bounces@xxxxxxxxxx wrote on 31.08.2010 11:43:50:
> Gabriel Tabares <gabriel.tabares@xxxxxxxxxxxx>
> Gesendet von: centos-bounces@xxxxxxxxxx
>
> 31.08.2010 11:44
>
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> Kopie
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> Thema
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> Automatically detecting LUNs without a reboot
>
> Hi everybody.
> I have an HP StorageWorks array connected to one of my servers,
> connected via an LSI controller (lspci reports: SCSI storage controller:
> LSI Logic / Symbios Logic SAS1068E PCI-Express Fusion-MPT SAS (rev 08))
> on an HP DL385 running CentOS 5.5 x86_64.
> I have set up multipath and all is working but, when I create a snaphost
> and export it as a new LUN from the HP web interface, it does not appear
> as a new disk. If I reboot, I get the LUN to appear as a new SCSI
> device (sd[a-z]).
> Is there any way I can force automatic detection? One of the reasons to
> use snapshots is to be able to back up the system without downtime, so
> not being able to detect the LUNs makes the whole set up a bit pointless.
> I have tried kudzu, the rescan-scsi-bus.sh script and everything else I
> have found online, with no luck. The LSI tools only seem to be available
> for i386, and I would like to avoid adding the 32bit environment, if I can.
> Any help would be greatly appreciated.
> Thanks,
> Gabriel Tabares
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Hi,
I do a rescan (online) on multipath with
echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
echo "- - -" > /sys/class/scsi_host/host2/scan
echo "- - -" > /sys/class/scsi_host/host3/scan
echo "- - -" > /sys/class/scsi_host/host4/scan
echo "- - -" > /sys/class/scsi_host/host5/scan
echo "- - -" > /sys/class/scsi_host/host6/scan
depends on the amount of controllers.
Gruß
Andreas Reschke
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Unix/Linux-Administration
Andreas.Reschke@xxxxxxxxxxxxx
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