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Conference turris::digital_unix

Title:DIGITAL UNIX(FORMERLY KNOWN AS DEC OSF/1)
Notice:Welcome to the Digital UNIX Conference
Moderator:SMURF::DENHAM
Created:Thu Mar 16 1995
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:10068
Total number of notes:35879

9914.0. "Advfs X Firewall X Patches" by VAXRIO::16.179.32.123::Manoel () Wed May 21 1997 16:29

	Hi, folks

	I'm not used to Firewall, and I'm helping a customer with an error
message at console that says : vmunix:/var:write failed,file system is full.
	His system is a OSF/1 3.2d-1 (rev 41) with Firewall v2.0.
	The awfull thing is that "df" command shows /var with only 61% usage.
	First of all I thought that the system could be dealing with a very 
number of files and may be there was a need for more space in memory to deal 
with advfs metadata, so I asked them to increase bufcache from 3% to 5%, but
the error message still remains.
	There are some patches (OSF360-067) to be installed related to advfs 
issues but I don't know if they can be installed in a machine using Firewall.
	Are there any specific patches for a Firewall machine ?
	Are there any other parameter to be changed regarding my assumption 
above ? Or it may be completly wrong !
	Thanks in advance for any help.
	Best regards.

					Manoel F. Abreu Neto (MCS/DEC@Rio)

T.RTitleUserPersonal
Name
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9914.1KITCHE::schottEric R. Schott USG Product ManagementWed May 21 1997 18:0738
>
>	Hi, folks
>
>	I'm not used to Firewall, and I'm helping a customer with an error
>message at console that says : vmunix:/var:write failed,file system is full.
>	His system is a OSF/1 3.2d-1 (rev 41) with Firewall v2.0.
>	The awfull thing is that "df" command shows /var with only 61% usage.
>	First of all I thought that the system could be dealing with a very 
>number of files and may be there was a need for more space in memory to deal 
>with advfs metadata, so I asked them to increase bufcache from 3% to 5%, but
>the error message still remains.
>	There are some patches (OSF360-067) to be installed related to advfs 
>issues but I don't know if they can be installed in a machine using Firewall.
>	Are there any specific patches for a Firewall machine ?
>	Are there any other parameter to be changed regarding my assumption 
>above ? Or it may be completly wrong !
>	Thanks in advance for any help.
>	Best regards.
>
>					Manoel F. Abreu Neto (MCS/DEC@Rio)
>

several choices:

   - you could problems with vquotacheck not having been run after a
     crash.  Solution: run vquotacheck on each file set when system is
     idle or single user mode to see if this finds the space.

   - fragmentation problems...run defragment to see if it helps

   - frag file fragmentation ....need to run addvol/rmvol to see
     if this fixes it (or vdump | vrestore)

I suggest you run sys_check on the system to give us more data

http://www-unix.zk3.dec.com/tuning/tools/sys_check/sys_check.html


9914.2More detailVAXRIO::16.179.32.123::ManoelFri May 23 1997 15:2622
	This customer has no quota activated and no advfs utilities to do 
a defrag, so I asked for a vdump X vrestore.
	Then another problem arised, because vdump ended up in error.
	So I asked for a msfsck and it takes ours but finished.
	Then backup was started again, this time it finished ours later.
	But when trying to see its contents comes out a hardware error 
message.
	In fact there are no hardware error in this tape unit because it can
successfully work with other tapes from other system.
	I found out a patch about a advfs problem with a heavy fragmented
file system, but I would like to be sure it can be applied in a machine with
Firewall, and if possible to find out if there is a script to do this 
installation; I'm talking about patch OSF360-061 that is superseeded by 
OSF360-067.
	I sent also syscheck script to this customer and I'm waiting for the
output.
	Thanks for you attention.
	Regards.

				Manoel F. Abreu Neto (MCS/DEC@Rio)

9914.3KITCHE::schottEric R. Schott USG Product ManagementFri May 23 1997 15:4839
>
>	This customer has no quota activated and no advfs utilities to do 
>a defrag, so I asked for a vdump X vrestore.

You need to run [v]quotacheck on reboot after a crash with advfs
regardless of whether you are enforcing quotas or not...it has to
do with advfs ALWAYS uses the quota data as part of its maintaing
in use/free space.

>	Then another problem arised, because vdump ended up in error.
>	So I asked for a msfsck and it takes ours but finished.
>	Then backup was started again, this time it finished ours later.
>	But when trying to see its contents comes out a hardware error 
>message.


Do you need other patches (like for vdump or restore)...have you
checked all the patches for the release you are on (and installed them?)

>	In fact there are no hardware error in this tape unit because it can
>successfully work with other tapes from other system.
>	I found out a patch about a advfs problem with a heavy fragmented
>file system, but I would like to be sure it can be applied in a machine with
>Firewall, and if possible to find out if there is a script to do this 
>installation; I'm talking about patch OSF360-061 that is superseeded by 
>OSF360-067.

you would have to ask support folks or advfs_support notes conference...
I don't know.  I don't know of a patch fixing the existing problem...
you might want them to get the utiltities as addvol/rmvol is a
whole lot easier than vdump/vrestore.

>	I sent also syscheck script to this customer and I'm waiting for the
>output.
>	Thanks for you attention.
>	Regards.
>
>				Manoel F. Abreu Neto (MCS/DEC@Rio)
>
9914.4Little more detail.VAXRIO::16.179.32.123::ManoelFri May 23 1997 16:3411
	I just received the output file of syscheck script, it is really a 
good repository of information.
	It says to use mkfdmn with -p and -x qualifiers in order to solve
a problem about heavy fragmented file systems, but it doesn't suggest values
to these parameters, do you know ? Do you want to see syscheck output file ?
	Thanks again for your attention.
	Regards.

MFAN(MCS/DEC@Rio)

9914.5KITCHE::schottEric R. Schott USG Product ManagementFri May 23 1997 16:5720
>
>	I just received the output file of syscheck script, it is really a 
>good repository of information.
>	It says to use mkfdmn with -p and -x qualifiers in order to solve
>a problem about heavy fragmented file systems, but it doesn't suggest values
>to these parameters, do you know ? Do you want to see syscheck output file ?
>	Thanks again for your attention.


this is documented in the doc set...I don't remember where...
I would suggest *2 *4 of current value...

the real trick is to get them to run defragment regularly



>	Regards.
>
>MFAN(MCS/DEC@Rio)
>
9914.6DECWET::MARTINFri May 23 1997 18:435
>	It says to use mkfdmn with -p and -x qualifiers in order to solve
>a problem about heavy fragmented file systems, but it doesn't suggest values
>to these parameters, do you know ? Do you want to see syscheck output file ?

man mkfdmn(8)