Date: Thu, 16 Jul 2009 12:05:18 +0100 From: Karl Pielorz <kpielorz_lst@tdx.co.uk> To: stopeme <stopeme@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Hanging when trying to 'rm' files off a read-only NFS export? [7.2-R] Message-ID: <9A36F2BF89E721543246FADC@WorkQuad64> In-Reply-To: <4A5F2FF2.7020600@gmail.com> References: <30202D4CE92AA65697481B1E@WorkQuad64> <4A5F2FF2.7020600@gmail.com>
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--On 16 July 2009 13:49 +0000 stopeme <stopeme@gmail.com> wrote: >> The reason for the shutdown hang is that '/etc/rc.d/random' rm's the >> '/entropy' file if it exists as the system shuts down, and that rm >> never returns (the error output is redirected so you never see the >> errors) :( > grep entropy | /etc/defaults/rc.conf > > entropy_file="/entropy" # Set to NO to disable caching entropy through > reboots. > # /var/db/entropy-file is preferred if / is not avail. > entropy_dir="/var/db/entropy" # Set to NO to disable caching entropy via > cron. > entropy_save_sz="2048" # Size of the entropy cache files. > entropy_save_num="8" # Number of entropy cache files to save. > > move entropy file to rw fs - like /var or somewhere else Already done that as a 'workaround' - but the underlying problem is that rm hangs... Surely it shouldn't hang? Also the actual '/etc/rc.d/random' appears to have code designed to work around read-only root file systems, but that doesn't work in this case - it doesn't avoid the hang. Touch doesn't hang, cp's don't hang, file redirection (e.g. 'echo "hello" >test') doesn't hang - infact everything I can think of doing write wise doesn't hang, except for rm? The rm hangs for ever (left it for hours). If any other software, scripts, or anything on there attempts a similar operation - it'll lock up that process for eternity, that can't be right? -Karl
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