Hibernation woes -- follow up

Sat May 10 13:16:46 UTC 2008

Derek Broughton wrote:
> Ted Hilts wrote:
>
>   
>> Here are the results of the "free" command. Somehow I missed your email
>> requesting the results of the "free" command. 
>>     
>
> There wasn't a request about "free", but I was trying to find out what sort
> of swap you had, and whether you have a "resume" option in the grub boot
> options.  That doesn't matter now, because "free" makes the problem clear.
>
>   
>> My email shows 3 threads 
>> under the primary thread so I may have accidentally read your request
>> incompletely thinking it was a resend. I apologize! Thanks for your
>> tolerance.
>>
>> ted at Ubuntu:~$ free
>> total used free shared buffers cached
>> Mem: 2596008 1453768 1142240 0 268616 510000
>> -/+ buffers/cache: 675152 1920856
>> Swap: 854272 500192 354080
>> ted at Ubuntu:~$
>>
>> The above is with 5 desktops with at least 1 very big application and a
>> dozen small applications and including VNC.
>>     
>
> So you need a bigger swap partition (or perhaps just an extra one - I'm not
> sure if hibernate can handle split partitions).
>
> You have ~1.4GB of memory in use, and ~0.8GB of total swap space.  Some
> compression occurs, and probably some memory that is known to be
> discardable will be left out of swap altogether, but there's still no
> chance that you can cram the memory being used for all that into your swap.
>
> You've probably been misled by suggestions on the web that if you have so
> much real memory, you don't need a large swap space.  And for normal
> operation, that's true, because if you have more physical memory than you
> ever use you won't use swap.  But since hibernation essentially works by
> swapping out everything that's currently running, you need _at the very
> least_ as much swap space as you have physical memory.
>   

Derek Broughton

news at pointerstop.ca

Thanks for identifying the solution to my problem. I stayed quiet until 
you were finished with the others and I was trying to figure out a way 
to deal with my situation (too little swap). I have included directly 
below a lot of system information followed by the question "Also, if I 
can use this tar backup on /media/sdc1 what would be the command lines 
to prepare Ubuntu on /media/sdc1???????????". If you choose to help me 
you will have to wade through this information. The overall idea is not 
to scrap the present dual boot Ubuntu/XP installation but rather to 
create a clone Ubuntu of the present one on the same machine and with 
maximum swamp. Please read on if you can spare the time to help me. If 
this turns out to be complex my response time might be one or two days 
while I try to get my head around the issues. Thanks.

I have freed up one of 5 hard drives (approx. 250 GB) on the dual boot 
Ubuntu/XP system.

I did the following backup on Ubuntu:
sudo -s -H;cd /;tar -cvzf /media/sdd1/backup-Fri02May2008.tgz 
--exclude=/proc --exclude=/lost+found 
--exclude=/media/sdd1/backup-Fri02May2008.tgz --exclude=/mnt 
--exclude=/media/cdrom --exclude=/media/cdrom0 --exclude=/media/floppy 
--exclude=/media/floppy0 --exclude=/media/sda1 --exclude=/media/sda2 
--exclude=/media/sdb1 --exclude=/media/sdc1 --exclude=/media/sdd1 
--exclude=/media/sde1 --exclude=/media/sdf1 --exclude=/media/sdg1 
--exclude=/media --exclude=/Mted-cic2ext --exclude=/Mted-CICERO 
--exclude=/Mted-CICERO-D --exclude=/Mted-CICERO-F --exclude=/Mted-market 
--exclude=/Mted-molly --exclude=/sys /

One of my questions -- given the above backup -- is: Can I use this 
empty hard drive to install my present Ubuntu using the backup? Ubuntu 
on this dual boot system is on the XP C drive or from Ubuntu's 
perspective the SDA3 drive with SDA1 and SDA2 for the XP. Here is the 
mount info:

ted at Ubuntu:~$ free
total used free shared buffers cached
Mem: 2596008 1453768 1142240 0 268616 510000
-/+ buffers/cache: 675152 1920856
Swap: 854272 500192 354080
ted at Ubuntu:~$
ted at Ubuntu:~$ mount
/dev/sda3 on / type ext3 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
/sys on /sys type sysfs (rw,noexec,nosuid,nodev)
varrun on /var/run type tmpfs (rw,noexec,nosuid,nodev,mode=0755)
varlock on /var/lock type tmpfs (rw,noexec,nosuid,nodev,mode=1777)
udev on /dev type tmpfs (rw,mode=0755)
devshm on /dev/shm type tmpfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
lrm on /lib/modules/2.6.22-14-generic/volatile type tmpfs (rw)
/dev/sda1 on /media/sda1 type vfat (rw,utf8,umask=007,gid=46)
/dev/sda2 on /media/sda2 type fuseblk 
(rw,nosuid,nodev,noatime,allow_other,default_permissions,blksize=4096)
/dev/sdb1 on /media/sdb1 type fuseblk 
(rw,nosuid,nodev,noatime,allow_other,default_permissions,blksize=4096)
/dev/sdc1 on /media/sdc1 type fuseblk 
(rw,nosuid,nodev,noatime,allow_other,default_permissions,blksize=4096)
/dev/sdd1 on /media/sdd1 type fuseblk 
(rw,nosuid,nodev,noatime,allow_other,default_permissions,blksize=4096)
/dev/sde1 on /media/sde1 type fuseblk 
(rw,nosuid,nodev,noatime,allow_other,default_permissions,blksize=4096)
/dev/sdf1 on /media/sdf1 type fuseblk 
(rw,nosuid,nodev,noatime,allow_other,default_permissions,blksize=4096)
/dev/sdg1 on /media/sdg1 type fuseblk 
(rw,nosuid,nodev,noatime,allow_other,default_permissions,blksize=4096)
securityfs on /sys/kernel/security type securityfs (rw)
none on /sys/kernel/config type configfs (rw)
capifs on /dev/capi type capifs (rw,mode=0666)
nfsd on /proc/fs/nfsd type nfsd (rw)
//CICERO/D on /Mted-CICERO-D type smbfs (rw)
ted at Ubuntu:~$

So the hard drive I would prepare would be: /media/sdc1

Another question: Would there be a boot problem because using this hard 
drive as I understand (from away back in time) the boot system and the 
active hard drive would be on SDA (or from the perspective of XP, the C 
drive.) I am not sure how grub would handle this situation (3 instead of 
2 boot systems with one on a currently "none active" hard drive.

Here is my /etc/fstab:
ted at Ubuntu:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda3
UUID=c8f92b8f-2f46-4500-929b-ccf369500593 / ext3 
defaults,errors=remount-ro 0 1
# /dev/sda1
UUID=2ED6-1123 /media/sda1 vfat defaults,utf8,umask=007,gid=46 0 1
# /dev/sda2
UUID=58BCBB80BCBB56EA /media/sda2 ntfs defaults,umask=007,gid=46 0 1
# /dev/sdb1
UUID=E83698FB3698CC46 /media/sdb1 ntfs defaults,umask=007,gid=46 0 1
# /dev/sdc1
UUID=581CE03A1CE01532 /media/sdc1 ntfs defaults,umask=007,gid=46 0 1
# /dev/sdd1
UUID=2018EC4E18EC248E /media/sdd1 ntfs defaults,umask=007,gid=46 0 1
# /dev/sde1
UUID=3698FF2798FEE3F1 /media/sde1 ntfs defaults,umask=007,gid=46 0 1
#UUID=3698FF2798FEE3F1 /media/sde1 ntfs 
defaults,gid=ted,uid=ted,umask=007 0 1
# /dev/sdf1
UUID=8868FAEC68FAD7C0 /media/sdf1 ntfs defaults,umask=007,gid=46 0 1
# /dev/sdg1
UUID=D02C35002C34E360 /media/sdg1 ntfs defaults,umask=007,gid=46 0 1
# /dev/sda4
UUID=891e4299-a126-4f0a-9b2c-b772bb91a47c none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto,exec 0 0
ted at Ubuntu:~$

Also, if I can use this tar backup on /media/sdc1 what would be the 
command lines to prepare Ubuntu on /media/sdc1???????????

Thanks, Ted.

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