reboot -r on mips

[Mori Hiroki]

Hi

I have new good idea at upgrading flash.

https://translate.google.com/translate?sl=ja&tl=en&js=y&prev=_t&hl=ja&ie=UTF-8&u=https%3A%2F%2Fqiita.com%2Fyamori813%2Fitems%2F437dee80478fccac34ee&edit-text=


----- Original Message -----
> From: Mori Hiroki <yamori813 at yahoo.co.jp>
> To: Eugene Grosbein <eugen at grosbein.net>; "freebsd-mips at freebsd.org" <freebsd-mips at freebsd.org>
> Cc: 
> Date: 2017/12/21, Thu 16:53
> Subject: Re: reboot -r on mips
> 
> Hi.
> 
> I found some time failed reboot -r. Log is here. 
> 
> Jan  1 09:01:04 init: cannot mount tmpfs on /dev/reroot: No space left on device
> Jan  1 09:01:04 init: reroot failed; going to single user mode
> 
> I checked code. This error come from TMPFS_PAGES_MINRESERVED
> cheek in sys/fs/tmpfs/tmpfs_vfsops.c.
> 
> Now TMPFS_PAGES_MINRESERVED is 4MByte. This is big because of
> my target have only 16MByte or 32Byte memory.
> 
> I want change smaller value to TMPFS_PAGES_MINRESERVED.
> 
> How to modify code?
> 
> Regards
> 
> Hiroki Mori
> 
> ----- Original Message -----
>>  From: Mori Hiroki <yamori813 at yahoo.co.jp>
>>  To: Eugene Grosbein <eugen at grosbein.net>; 
> "freebsd-mips at freebsd.org" <freebsd-mips at freebsd.org>
>>  Cc: 
>>  Date: 2017/11/29, Wed 20:41
>>  Subject: Re: reboot -r on mips
>> 
>>  Hi
>> 
>>  I found new method at upgrade. That is use pipe.
>> 
>>  This is upgrade script. This method only use 6MByte md
>>  any size flash.
>> 
>>  #!/bin/sh
>> 
>>  ZBOARD=`uname -i`
>> 
>>  . /etc/upgrade.conf
>> 
>>  cd /tmp
>>  mkdir bin
>>  mkdir sbin
>>  mkdir libexec
>>  mkdir dev
>>  mkdir lib
>>  mkdir etc
>>  mkdir -p usr/bin
>>  cp /sbin/init sbin/
>>  cp /bin/sh bin/
>>  cp /bin/dd bin/
>>  cp /bin/kill bin/
>>  cp /libexec/ld-elf.so.1 libexec/
>>  cp /etc/login.conf.db etc/
>>  cp /usr/bin/tftp usr/bin/
>>  cp /lib/libedit.so.7 lib/
>>  cp /lib/libncursesw.so.8 lib/
>>  cp /lib/libc.so.7 lib/
>>  mkfifo flashpipe
>> 
>>  kenv vfs.root.mountfrom="ufs:md0"
>> 
>>  #echo ${ZBOARD}.zimage
>> 
>>  echo "#!/bin/sh" > etc/rc
>>  echo "dd if=/flashpipe of=${UPGRADEDEV} obs=${UPGRADEBS} conv=osync 
>>  &" >> etc/rc
>>  echo "echo ¥"bin
>>  get ${ZBOARD}.zimage /flashpipe
>>  quit¥" | tftp ${UPGRADETFTP} 69" >> etc/rc
>>  echo "kill -INT 1" >> etc/rc
>>  chmod a+x etc/rc
>> 
>>  reboot -r
>> 
>>  Hiroki Mori
>> 
>>  ----- Original Message -----
>>>   From: Mori Hiroki <yamori813 at yahoo.co.jp>
>>>   To: Eugene Grosbein <eugen at grosbein.net>; 
>>  "freebsd-mips at freebsd.org" <freebsd-mips at freebsd.org>
>>>   Cc: 
>>>   Date: 2017/11/28, Tue 16:38
>>>   Subject: Re: reboot -r on mips
>>> 
>>>   Hi
>>> 
>>>   Thanks for your advice. I missing your mail.
>>> 
>>>   I use ZRouter build system. This build use md file system at /tmp.
>>> 
>>>   But small(10M) than 8M flash upgrade. Then I do this way.
>>> 
>>>   1. nomal boot process
>>> 
>>>   2. set kenv to prepareupgrade=1
>>> 
>>>   3. reboot -r
>>> 
>>>   4. if set prepareupgrade then delete old md and make big(16M) md in 
> rc.
>>> 
>>>   5. make minimum rootfs in md and save new image by tftp.
>>> 
>>>   6. reboot -r
>>> 
>>>   7. image to flash by dd
>>> 
>>>   8. kill -INT 1
>>> 
>>>   Thanks again.
>>> 
>>>   Hiroki Mori
>>> 
>>>   ----- Original Message -----
>>>>    From: Eugene Grosbein <eugen at grosbein.net>
>>>>    To: Mori Hiroki <yamori813 at yahoo.co.jp>; 
>>>   "freebsd-mips at freebsd.org" <freebsd-mips at freebsd.org>
>>>>    Cc: 
>>>>    Date: 2017/11/27, Mon 21:17
>>>>    Subject: Re: reboot -r on mips
>>>> 
>>>>    27.11.2017 18:56, Mori Hiroki пишет:
>>>>>     Hi.
>>>>> 
>>>>>     I found reboot -r today. I try this function on my Atheros 
> AR9.
>>>> 
>>>>    [skip]
>>>> 
>>>>>     This function make complete flash update method.
>>>> 
>>>>    Yes, it's great. Also, look at 
>>>> 
>   https://lists.freebsd.org/pipermail/freebsd-mips/2016-February/004431.html
>>>> 
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>>> 
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