[LinuxFailSafe] Failsafe, shared SCSI, and linux's software RAID
Dan Freed
dfreed@epicsystems.com
Tue, 9 Jul 2002 13:35:05 -0500
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Does Failsafe and Linux's software RAID (specifically mirroring) work =
reliably together on shared SCSI disks?
=20
Basically I am looking to use Failsafe to replace heartbeat (failsafe =
seems more robust and complete) to control a 2 node HA cluster. I would =
like to use Linux's built in software RAID to mirror the shared disks in =
the cluster but I am worried about the data integrity when the primary =
node fails. Will the software RAID on the secondary node be able to =
bring the disks up and keep them in synch?
=20
Any thoughts are welcomed.
=20
Thanks
=20
Daniell Freed
Server Systems Team
Epic Systems Corp.
dfreed@epicsystems.com
=20
=20
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<div class=3DSection1>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Does Failsafe and Linux’s software RAID =
(specifically
mirroring) work reliably together on shared SCSI =
disks?</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Basically I am looking to use Failsafe to replace =
heartbeat
(failsafe seems more robust and complete) to control a 2 node HA =
cluster.=A0 I would
like to use Linux’s built in software RAID to mirror the shared =
disks in
the cluster but I am worried about the data integrity when the primary =
node
fails.=A0 Will the software RAID on the secondary node be able to bring =
the disks
up and keep them in synch?</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Any thoughts are welcomed.</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Daniell Freed</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Server Systems Team</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Epic Systems Corp.</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><a =
href=3D"mailto:dfreed@epicsystems.com">dfreed@epicsystems.com</a></span><=
/font></p>
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style=3D'font-size:
12.0pt'> </span></font></p>
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style=3D'font-size:
12.0pt'> </span></font></p>
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