Re: Unix problem - Urgent help required

 Dear Brian

Thanx for dealing the problem in toto. Excellent

100% space problems do arise .

It is better remove some logfiles make a room then start compressing files which are not in use - but you are in doubt whether to keep them or not.

Rao

--

On Sun, 05 Nov 2000 17:30:27  
 bsilverio wrote:


>

>A move is a copy followed by an unlink of the original file.  If a process

>was still writing to the original file the blocks would NOT be released.

>The space is only released when the link count drops to zero.  When a

>process opens a file the link count is increased by 1.  If the writing

>process was still running then there will be inodes and file system blocks still

>chained together but NOT linked to a directory.  The are "lost".  Fixing this is

>what fsck was written for. 

>

>I suggest the following:

>1.	run fsck manually make some notes about what questions it asks

>	you.

>2.	mount the filesystem

>3.	cd to /problem.filesystem/lost+found and look around.  There will

>	be files

>	there with names that are numbers.  The file names are the inode

>	numbers 

>	that fsck turned up while it was rooting through the disk.

>4.	LOOK AT THE FILE CONTENTS AND SEE IF YOU CAN FIGURE OUT WHAT IT

>	IS!

>	I can't emphasize this enougn.  Without this postmortem you can be 

>	assured that the problem will be back.

>5.	Compress the files and copy them off somewhere for future use.

>6.	remove the files in lost+found

>

>You should now have your space back.  

>

>In these types of situations NEVER remove the files.  If a process has

>them open for writing the space will not be returned AND you will no

>longer have any way to access the file contents.  When I run into this, I

>look at the file contents to see what is causing the problem and then free up the space by 

>>/the/file/lives/here

>This truncates the file to zero bytes.  You can do the same with

>cp /dev/null /the/file/lives/here

>but that takes more keystrokes.

>Once you have the space back, you can find and kill the process that is

>causing the problem.   

>

>And, BTW, once the process writes the next block, the file will show in an

>ls as still being very large.  This is because it is now a "sparse file".

>ls shows the largest address you can seek to, not the total of all data blocks.

>

>Brian

>

>

>On Sat, 4 Nov 2000 RanganathK_at_lgcommerznow.com wrote:

>

>> Dear all,

>> 

>>      I have a problem On Sun Solaris 2.6.  One of my filesystems/partitions

>> was showing as 100% full.  So I moved some of the directories and files to

>> the other partition.  Then also this filesystem was showing as 100% full.

>> So I thought that may be by shutting down and restarting the machine the

>> filesystem will show some free space.  But after shutting down and

>> restarting the machine I observed this particular filesystem is not

>> mounting and it was booting in single user mode and asking me to run fsck

>> as the filesystem is inconsistent.  But even after running fsck I observed

>> that the filesystem was not mounting.  Can anyone help me in getting the

>> filesystem mounted.  Any help in this regard will be very much appreciated.

>> 

>> TIA,

>> 

>> Ranganath

>> 

>> 

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>

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>Author: 

>  INET: bsilverio_at_necc.mass.edu

>

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