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[ts-7000] Re: did I do something bad? -bash: <filename.xxx>: Read-only f

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Subject: [ts-7000] Re: did I do something bad? -bash: <filename.xxx>: Read-only file system
From: "Jon L" <>
Date: Wed, 06 Jan 2010 18:38:14 -0000
excellent info thanks - JL



--- In  Jim Jackson <> wrote:
>
> 
> 
> 
> On Wed, 6 Jan 2010, Jon L wrote:
> 
> > well I've got nothing running and here is free:
> >
> > ts7500:/home/jon/programs/sjinn# free
> >             total       used       free     shared    buffers     cached
> > Mem:         62912      58116       4796          0      18204      17276
> > -/+ buffers/cache:      22636      40276
> > Swap:            0          0          0
> > ts7500:/home/jon/programs/sjinn#
> >
> > is seems kinda full, is this normal?
> 
> Read the second line "-/+ buffers/cache". Linux uses "free" ram as disk 
> cache.
> 
> > heres the ps -ef:
> 
> ps uax might be more informative  - it gives memory footprint info. see the 
> man page. You could then see what was using the 22M memory used.
> 
> > ts7500:/home/jon/programs/sjinn# ps -ef
> > UID        PID  PPID  C STIME TTY          TIME CMD
> > root         1     0  0 Jan01 ?        00:00:00 init [2]
> > root         2     0  0 Jan01 ?        00:00:00 [kthreadd]
> > root         3     2  0 Jan01 ?        00:00:00 [ksoftirqd/0]
> > root         4     2  0 Jan01 ?        00:00:00 [events/0]
> > root         5     2  0 Jan01 ?        00:00:00 [khelper]
> > root        26     2  0 Jan01 ?        00:00:00 [kblockd/0]
> > root        48     2  0 Jan01 ?        00:00:00 [pdflush]
> > root        49     2  0 Jan01 ?        00:00:00 [pdflush]
> > root        50     2  0 Jan01 ?        00:00:00 [kswapd0]
> > root        51     2  0 Jan01 ?        00:00:00 [aio/0]
> > root        84     2  0 Jan01 ?        00:00:00 [rpciod/0]
> > root        94     1  0 Jan01 ?        00:00:00 ts7500ctl --getrtc 
> > --resetswitch
> >
> > root       111     1  0 Jan01 ?        00:00:01 xuartctl --server
> > root       116     1  0 Jan01 ?        00:07:08 sdctl -z 65536 --nbdserver 
> > lun0:
> >
> > root       117     1  0 Jan01 ?        00:00:00 nbd-client 127.0.0.1 7500 
> > /dev/n
> >
> > root       119     1  0 Jan01 ?        00:00:00 nbd-client 127.0.0.1 7501 
> > /dev/n
> >
> > root       121     1  0 Jan01 ?        00:00:00 nbd-client 127.0.0.1 7502 
> > /dev/n
> >
> > root       123     1  0 Jan01 ?        00:00:00 nbd-client 127.0.0.1 7503 
> > /dev/n
> >
> > root       125     1  0 Jan01 ?        00:00:06 nbd-client 127.0.0.1 7504 
> > /dev/n
> >
> > root       126     2  0 Jan01 ?        00:00:01 [kjournald]
> > root       198     1  0 Jan01 ?        00:00:00 udevd --daemon
> > root       363     2  0 Jan01 ?        00:00:00 [khubd]
> > daemon     496     1  0 Jan01 ?        00:00:00 /sbin/portmap
> > statd      507     1  0 Jan01 ?        00:00:00 /sbin/rpc.statd
> > root       588     1  0 Jan01 ?        00:00:00 /usr/sbin/rsyslogd -c3
> > 103        601     1  0 Jan01 ?        00:00:00 /usr/bin/dbus-daemon 
> > --system
> > avahi      613     1  0 Jan01 ?        00:00:00 avahi-daemon: running 
> > [ts7500.lo
> >
> > avahi      614   613  0 Jan01 ?        00:00:00 avahi-daemon: chroot helper
> > root       625     1  0 Jan01 ?        00:00:00 /usr/sbin/sshd
> > root       643     1  0 Jan01 ?        00:00:00 /usr/sbin/inetd
> > root       663     1  0 Jan01 ?        00:00:00 /usr/sbin/cron
> > root       764     1  0 Jan01 ttyS0    00:00:00 /bin/login --
> > root       765   764  0 Jan01 ttyS0    00:00:00 -bash
> > root       788     1  0 Jan01 ?        00:00:00 dhclient
> > root      1918   643  0 Jan05 ?        00:00:02 in.telnetd: 
> > dhpc-1060l.dhpc.loca
> >
> > root      1920  1918  0 Jan05 pts/1    00:00:00 login -h 
> > dhpc-1060l.dhpc.local -
> >
> > root      1921  1920  0 Jan05 pts/1    00:00:01 -bash
> > root      2714     1  0 19:22 ?        00:00:00 xuartctl --port 0 --server 
> > --spe
> >
> > root      2812     1  0 19:37 ?        00:00:00 /usr/sbin/apache2 -k start
> > www-data  2814  2812  0 19:37 ?        00:00:00 /usr/sbin/apache2 -k start
> > www-data  2817  2812  0 19:37 ?        00:00:00 /usr/sbin/apache2 -k start
> > www-data  2818  2812  0 19:37 ?        00:00:00 /usr/sbin/apache2 -k start
> > root      2876   765  0 19:40 ttyS0    00:00:00 ps -ef
> > ts7500:/home/jon/programs/sjinn#
> >
> >
> >
> > --- In  "david.breton" <dbretonusa@> wrote:
> >>
> >>
> >> Use the free command to see if your used memory is slowly increasing until 
> >> it runs out of available memory
> >>
> >> echo 1 > /proc/sys/vm/drop cache to free memory when the free command 
> >> output indicates free memory is low
> >>
> >>
> >>
> >>
> >>
> >> --- In  "Jon L" <jleslie48@> wrote:
> >>>
> >>>
> >>>
> >>> --- In  "Jon L" <jleslie48@> wrote:
> >>>>
> >>>> ts7500:/home/jon/programs/sjinn# tail -f /dev/testuart >t_f.lis
> >>>> -bash: t_f.lis: Read-only file system
> >>>> ts7500:/home/jon/programs/sjinn# tail -f /dev/testuart >tf.lis
> >>>> -bash: tf.lis: Read-only file system
> >>>>
> >>>>
> >>>> is a symptom, I had a gps antenna continually filling an RX buffer 
> >>>> /dev/testuart and ever emptying it.
> >>>>
> >>>>
> >>>> shutdown was even disabled:
> >>>>
> >>>>
> >>>> ts7500:~# shutdown now
> >>>> -bash: /sbin/shutdown: Input/output error
> >>>> ts7500:~# man shutdown
> >>>> man: can't resolve /usr/share/man/man8/shutdown.8.gz: No such file or 
> >>>> directory
> >>>> No manual entry for shutdown
> >>>> See 'man 7 undocumented' for help when manual pages are not available.
> >>>> ts7500:~# man ls
> >>>> man: can't resolve /usr/share/man/man1/ls.1.gz: No such file or directory
> >>>> No manual entry for ls
> >>>> See 'man 7 undocumented' for help when manual pages are not available.
> >>>> ts7500:~# shutdown -r now
> >>>> -bash: /sbin/shutdown: Input/output error
> >>>> ts7500:~# reboot
> >>>> -bash: /sbin/reboot: Input/output error
> >>>> ts7500:~#
> >>>>
> >>>>
> >>>> eventually just pulled the plug.
> >>>>
> >>>> what happened?
> >>>>
> >>>
> >>>
> >>>
> >>> well, I can't repeat the problem, anyway.  the UART port that was hooked 
> >>> up to a GPS antenna that I thought was the source of the problem doesn't 
> >>> seem to be an issue.
> >>>
> >>
> >
> >
> >
>




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