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<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>I ran into a problem
where a file system was corrupted beyond repair and wondered if anyone has seen
anything like this before or has a reasonable explanation. Here is the
scenario:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=214125418-06092006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>Linux was running on
an Intel X64 system with two local drives mirrored in Linux containing
the swap file system.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>The system was
booting off a SAN drive where the rest of Linux was loaded.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>There were three
other SAN LUN's being used that were:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>
1. 500 GB</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>
2. 150 GB</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>
3. 35 GB (Linux LUN.)</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=214125418-06092006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>We swapped the
system hardware to a different box and changed the HBA to be on the new box so
the HBA Bios was still allowing the Boot from SAN.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>The new box had two
local drives but they were mirrored at the hardware level with RAID 1 (so Linux
would have only seen one drive drive.)</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>The system was
rebooted and crashed with numerous file system corruption
errors.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>The 500 GB LUN on
the SAN got severely corrupted on the reboot of Linux from the SAN with the new
hardware to the point where it could not be repaired.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=214125418-06092006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>What I am wondering
is, What caused the system to get corrupted?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=214125418-06092006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>Is it possible that
the lack of a swap file system mounted would have caused this to happen?
Or is it because the /dev devices were not the same as they were in the first
configuration?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=214125418-06092006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=214125418-06092006>Any
ideas?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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<DIV class=Section1><SPAN class=214125418-06092006><FONT face=Arial
size=2>Phillip Thayer</FONT></SPAN></DIV></BODY></HTML>