crash on writing usbstick

[Brett Wynkoop]

Greeting-

Another data point came out tonight.

A    head/sys/mips/adm5120/obiovar.h
svn: E200030: sqlite[S10]: disk I/O error
svn: E200030: Additional errors:
svn: E200030: sqlite[S10]: disk I/O error
svn: E200030: Additional errors:
svn: E200030: sqlite[S10]: disk I/O error
svn: E200030: Additional errors:
svn: E200030: sqlite[S10]: disk I/O error
svn: E200030: Additional errors:
svn: E200030: sqlite[S1]: no such savepoint: svn
svn: E200030: Additional errors:
svn: E200030: sqlite[S1]: no such savepoint: svn
svn: E200030: Additional errors:
svn: E200030: sqlite[S1]: no such savepoint: svn
svn: E200030: Additional errors:
svn: E200030: sqlite[S1]: no such savepoint: svn

So there are disk I/O errors to the zfs as well, but as others have
said the checksumming was helping.

It still does not explain why the kernel panic on UFS and I just get
disk i/o errors on zfs. I really think disk i/o errors to data disks
should not cause a panic. 

Time for me to swap some hardware around and do some more testing.

-Brett

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