Got it

Post #70,095 by broomberg 12/20/02 10:44:25 AM Reply	Got it There seems to be a problem with the GBit link to the Sun NFS box causing certain processes to hang in a 'D' state. ps -elf shows them. They are unkillable since they are waiting for hardware. They contribute to the load average, which I think is a bug in the calculation logic. They certainly are not runnable. Required a box reboot. We are swapping the Gbit card. Thanks.
Post #70,101 by kmself 12/20/02 11:23:48 AM Reply	NFS hangs NFS is notorious for this. \r\n\r\n Not sure if I'm confusing NFS with Samba, but IIRC there's a mount flag that will allow remote file accesses to time out. This should avoid your hung I/O processes in future. \r\n --\r\n Karsten M. Self [link\|mailto:kmself@ix.netcom.com\|kmself@ix.netcom.com]\r\n [link\|http://kmself.home.netcom.com/\|http://kmself.home.netcom.com/]\r\n What part of "gestalt" don't you understand?\r\n [link\|http://twiki.iwethey.org/twiki/bin/view/Main/\|TWikIWETHEY] -- an experiment in collective intelligence. Stupidity. Whatever.\r\n \r\n Keep software free. Oppose the CBDTPA. Kill S.2048 dead.\r\n[link\|http://www.eff.org/alerts/20020322_eff_cbdtpa_alert.html\|http://www.eff.org/alerts/20020322_eff_cbdtpa_alert.html]\r\n
Post #70,138 by rickmoen 12/20/02 2:36:24 PM Reply	Re: NFS hangs Karsten wrote: Not sure if I'm confusing NFS with Samba, but IIRC there's a mount flag that will allow remote file accesses to time out. This should avoid your hung I/O processes in future. Soft-mounting NFS risks file corruption. Hard-mounting NFS risks hangs. Thus: [link\|http://linuxmafia.com/~rick/lecture-notes/nisnfs\|Nightmare File System]. Voila! Rick Moen rick@linuxmafia.com If you lived here, you'd be $HOME already.
Post #70,166 by boxley 12/20/02 5:13:21 PM Reply	absolutely excellent link supplied of the security issue I have run NFS over an ssh tunnel for grins but nfs should only be used in a pristine trusted environment. thanx, bill will work for cash and other incentives [link\|http://home.tampabay.rr.com/boxley/resume/Resume.html\|skill set] You think that you can trust the government to look after your rights? ask an Indian
Post #70,225 by deSitter 12/21/02 10:05:15 AM Reply	Re: absolutely excellent link supplied Well of course not! The same applies to splattering X sessions all over the place. NFS is fine in its realm. At least, I've never had any issues. -drl
Post #70,165 by boxley 12/20/02 5:08:35 PM Reply	you are using automount correct? hat does solve a lot of NFS stale file handle issues also. thanx, bill bill will work for cash and other incentives [link\|http://home.tampabay.rr.com/boxley/resume/Resume.html\|skill set] You think that you can trust the government to look after your rights? ask an Indian
Post #70,314 by broomberg 12/21/02 10:56:17 PM Reply	No I believe everyone is barking at the wrong tree. NFS is merely the carrier of this particluar disease. The Dell Dual Xeon under Linux has problems with every Gbit card I've used, either internal MB based or PCI Intel or Sysconnect. It gives checksum errors, hangs the box, kills the associated process, corrupts the data, etc, etc, etc. We've use the variety of Intel drivers, TIGON drivers, Broadcom drivers, etc. RH just released a kernel update that solved the EXT3 wierd mount last second non-flush write bug, and snuck in a TIGON driver fix that says will stop it from hanging. I've started working with a dual Xeon IBM box. If this doesn't have the same problems, I'm killing the Dells and replacing them with IBMs
Post #70,328 by boxley 12/21/02 11:36:51 PM Reply	understood BUT!!! if using automount, you cd to nfs mounted directory it gets mounted, you cd out it is unmounted, this removes any issue of keeping a "not in use at this time network connection open issue." This is a good thing unless you are alwas working in a nfs mounted directory IMHO. thanx, bill will work for cash and other incentives [link\|http://home.tampabay.rr.com/boxley/resume/Resume.html\|skill set] You think that you can trust the government to look after your rights? ask an Indian

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