Marc E. Fiuczynski wrote:
In terms of stability, it appears the i/o controller causes the system to
hang while doing a kernel compile (make -j 3).
Does this happen fairly repeatably ?
Of course, after several hard reboots the filesystem was corrupted. Trying to fix the filesystem (ext) with the same kernel, fsk would fail with a SIG_USR1 about 50% through the check. My conjecture is that something is failing in the cfq-iosched.c code that reflects this signal back to fsck. My reasonig for this is that running the same fsck on a system booted with a vanilla FC2 1.521 kernel succeeded to clean the filesystem. Until the I/O scheduler attains better stability, I plan to simply switch back to the vanilla FC2 1.521 cfq-iosched.c.
I'll look into this using your tree.
Regards, Shailabh
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