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тАО09-30-2009 07:34 PM
тАО09-30-2009 07:34 PM
fbackup(1702): out of virtual memory
My server is attached to a tape library containing 4 LTO2 drives.
A full fs backup is divided into 4 sets running all at the same utilizing the 4 tape drives.
Its strange that i only get the "out of memory error" in only 1 tape drive. For the rest its working just fine.
By the way here is my current swapinfo output
/> swapinfo -tam
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 800 0 800 0% 0 - 1 /dev/vg00/lvol2
dev 32768 0 32768 0% 0 - 1 /dev/vg01/lvol9
reserve - 29768 -29768
memory 53062 36374 16688 69%
total 86630 66142 20488 76% - 0 -
Need your inputs on this one.
TIA
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тАО09-30-2009 08:00 PM
тАО09-30-2009 08:00 PM
Re: fbackup(1702): out of virtual memory
Are all these tape drives identical?
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тАО10-01-2009 03:24 PM
тАО10-01-2009 03:24 PM
Re: fbackup(1702): out of virtual memory
Bill Hassell, sysadmin
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тАО10-01-2009 06:48 PM
тАО10-01-2009 06:48 PM
Re: fbackup(1702): out of virtual memory
├в maxdsiz 4294963200 4294963200 Static N/A
All of my tape drives are identical.
I need to solve this issue.
As a temporary solution i divided the contents of my graph file and splitted it into 4 graph files containing a small number of filesystem to backup. Now I am using all four tape drives and backup is running.
I dont know the difference between having just one graph file containing all filesystems to backup compared to 4 graphs and using 4 tape drives. How does it affect the OS and why the out of memory error is being encountered.
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тАО10-01-2009 08:32 PM
тАО10-01-2009 08:32 PM
Re: fbackup(1702): out of virtual memory
It is hard to believe you are out of swapspace with 20 Gb free.
>maxdsiz 4294963200
fbackup is a 32 bit process, so it can only use 1 Gb minus the value of maxssiz.
What is maxssiz?
You might want to use top to look at the memory used for these fbackup processes.
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тАО10-01-2009 09:17 PM
тАО10-01-2009 09:17 PM
Re: fbackup(1702): out of virtual memory
maxssiz 401604608 401604608 Static N/A
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тАО10-01-2009 09:34 PM
тАО10-01-2009 09:34 PM
Re: fbackup(1702): out of virtual memory
That may be your problem. Some evil Fortran programmer has insisted you allow large stacks and cut your heap in half.
So you should regen your kernel to make it smaller, 80 Mb.
Or you can be kind and use fire to fight fire by using ulimit just before you invoke fbackup:
ulimit -s $(( 80 * 1024 ))