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Chapter 7 145
Recovering from failures
System panics
Logical Volume Manager (LVM) related
problem
If the size of a logical volume that contains a file system is reduced such
that the logical volume is smaller than the file system within it, the file
system will be corrupted. When an attempt is made to access a part of
the truncated file system that is beyond the new boundary of the logical
volume a system panic will often result.
The problem might not show up immediately. It will occur when the
truncated part of the file system is overwritten by something else (such
as a new logical volume or the extension of a logical volume in the same
volume group as the truncated file system).
For more information on LVM, see Managing Systems and Workgroups.
Recovery from other situations
When a problem appears with something other than that has previously
been discussed or the problem can not be classified, proceed to
“Rebooting the system” on page 146. Ensure that the exact text of the
panic message is recorded for future troubleshooting purposes. See
“Collecting information” on page 138 for further information.