Date: Mon, 17 Oct 2005 13:50:30 +0200 From: Danny Braniss <danny@cs.huji.ac.il> To: am-utils@fsl.cs.sunysb.edu Cc: freebsd-current@freebsd.org Subject: 6.0-RC1/amd 6.1.2.1: mount stuck Message-ID: <E1ERTVe-0008l5-Eu@cs1.cs.huji.ac.il>
next in thread | raw e-mail | index | archive | help
problem: /cs/share is atomounted, but mount(NFSv3/UDP) is stuck
ps alwx | grep amd
0 395 1 0 96 0 1764 1784 select Ss ?? 0:00.20 /SBIN/amd
-p -a /a -l /var/log/amd -x all -D all /usr/local hesiod.lo ...
0 511 395 208 -1 0 1764 1784 nfsreq D ?? 0:00.00 /SBIN/amd
-p -a /a -l /var/log/amd -x all -D all /usr/local hesiod.lo ...
a gcore of 511, shows that it's stuck in the mount syscall.
this seems to be some kernel timming/race problem, because:
1- it does not happen with a slower cpu.
2- it does not happen if the mount sequence is slight different
3- it does not happen with the older amd 6.0.10-2004051.
btw, kern.smp.disabled=1, the problem still exists.
I don't think it's the server, a NetAPP, because all other mounts are ok.
danny
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E1ERTVe-0008l5-Eu>