Finding a rogue IO source

Phillip Susi psusi at ubuntu.com
Wed Sep 25 14:03:09 EDT 2013


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

I have an unused disk ( no mounted filesystems ) that I put to sleep (
hdparm -Y ) and every 10 minutes, the link is reset to process a
request coming from a short lived process named "pool".  I think it is
a kernel work queue.  I inserted a dump_stack() but it stops when it
gets to the syscall and so doesn't trace back into what work item is
running.  How can I figure out what work item is doing this?

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.17 (MingW32)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

iQEcBAEBAgAGBQJSQyVcAAoJEJrBOlT6nu75uqkH/j0zivSWfM5XsaDDJZ4gjb8i
kvVlaidw9Wu2cv7lgVQB8Ml3eTmqx3ia9I72H9OWJcm324EJ10dD+3jiWAoT2T72
3uojSlbSrZ+0Yp+91EgKjc0/5D2Kz4vVI2rELHYt6ATA8rfLnA6Syrebr3zgY05m
41/pzBieT/lUBpQzWfkVxOtKk+Ma46uAmu1Ipo+G8wwFehbjT/LN57Bv3uFM4M7J
sFaBAPCs8nNeAzR+Ud1Yhj6zNZnNct2bIm5oo7Lt7JPuBMzli8q+FVFLrvXOWU8M
WXhkalBTYqlmNLXbNsJtYO2IfLFNlNsrYCoyS4IHKvHj8lSzlAKU/dO/OtbJFng=
=/RfH
-----END PGP SIGNATURE-----



More information about the Kernelnewbies mailing list