"It should work on FC3 or later (the pilgrim tools for OLPC that this is
based on is running on RHEL4 which is a downstream of FC3) but I haven't
tested on anything but FC6 and Rawhide."
Correct. It should work. I'm glad I'm potentially indirectly helping
with OLPC with this debug session... :-) (That is of course if I'm not
reaching a hardware limit or overlooking something very simple.) I'm in the
middle of running the tests I mentioned earlier and should have results
before 10 EST -- I think.
"The response from kernel people to a _loop device_ experiencing I/O errors
was: "cute"."
Isn't it?
"They suggested your system is either OOM or you're running of disk space /
disk quota. Is this the case?"
A quick sample...
[amd59c@laptop livecd-tools]$ free
total used free shared buffers cached
Mem: 742252 730672 11580 0 67924 336684
-/+ buffers/cache: 326064 416188
Swap: 1534196 300 1533896
[amd59c@laptop livecd-tools]$ free
total used free shared buffers cached
Mem: 742252 730920 11332 0 67940 336748
-/+ buffers/cache: 326232 416020
Swap: 1534196 300 1533896
[amd59c@laptop livecd-tools]$ free
total used free shared buffers cached
Mem: 742252 730920 11332 0 67940 336812
-/+ buffers/cache: 326168 416084
Swap: 1534196 300 1533896
[amd59c@laptop livecd-tools]$ free
total used free shared buffers cached
Mem: 742252 731044 11208 0 67940 336868
-/+ buffers/cache: 326236 416016
Swap: 1534196 300 1533896
[amd59c@laptop livecd-tools]$ free
total used free shared buffers cached
Mem: 742252 731044 11208 0 67944 336932
-/+ buffers/cache: 326168 416084
Swap: 1534196 300 1533896
[amd59c@laptop livecd-tools]$ free
total used free shared buffers cached
Mem: 742252 730096 12156 0 62700 338788
-/+ buffers/cache: 328608 413644
Swap: 1534196 300 1533896
[amd59c@laptop livecd-tools]$ free
total used free shared buffers cached
Mem: 742252 730220 12032 0 62700 338820
-/+ buffers/cache: 328700 413552
Swap: 1534196 300 1533896
[amd59c@laptop livecd-tools]$
I seem to be hovering around 11-12M free. I have a total of 756MB
physical ram but some is shared with the graphics card. Here is a quick
rundown of diskspace:
[amd59c@laptop livecd-tools]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VG_00-LV_000
961M 185M 727M 21% /
/dev/hda1 99M 9.7M 84M 11% /boot
tmpfs 363M 0 363M 0% /dev/shm
/dev/mapper/VG_00-LV_001
1.9G 555M 1.3G 31% /home
/dev/mapper/VG_00-LV_006
3.8G 210M 3.4G 6% /opt
/dev/mapper/VG_00-LV_007
5.7G 289M 5.1G 6% /sw
/dev/mapper/VG_00-LV_008
3.8G 72M 3.6G 2% /swdata/sys
/dev/mapper/VG_00-LV_009
2.9G 1.6G 1.2G 59% /swpkg/sys
/dev/mapper/VG_00-LV_002
961M 28M 884M 4% /tmp
/dev/mapper/VG_00-LV_004
1.9G 591M 1.3G 33% /var
/dev/mapper/VG_00-LV_003
6.8G 6.0G 460M 94% /usr
/dev/mapper/VG_00-LV_005
3.8G 212M 3.4G 6% /usr/local
/dev/loop0 3.0G 72M 2.9G 3%
/var/tmp/livecd-creator/build-tmpIG3wWz/install_root
/dev 363M 168K 363M 1%
/var/tmp/livecd-creator/build-tmpIG3wWz/install_root/dev
/var/tmp/livecd-creator/build-tmpIG3wWz/yum-cache
1.9G 591M 1.3G 33%
/var/tmp/livecd-creator/build-tmpIG3wWz/install_root/var/cache/yum
Yes /usr is high, but not to worry...I'm not building from there
because the "scratch" is mounted under /var/tmp ... Unless there is
something weird boing on???
I don't have quotas implemented on this system.
"Note that the files backing the loop devices are sparse files so the
creation of them works even when you don't have enough free space. The
reason for sparse files is that we don't have to spend time writing 4GB of
zero's to a file."
Yup. You did a good job on design.
-Adam
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