Mag Gam (mag...@gmail.com)

thanks everyone for your fair and balanced opinions and experiences!

I am planning to use ZFS on my Centos 5.2 systems. The data I am
storing is very large text files where each file can range from 10M to
20G. I am very interested on the compression feature of ZFS, and it
seems no other native Linux FS supports it.

My question are: Is ZFS stable? How does it scale for very large
filesytems, ie, 2TB to 9TB? How is the performance of fuse? I plan to
use it on my archive server first, so data reliability is very
important

Any thoughts or ideas?

TIA

So, I decided to go with mode 6 since my network admin says thats
supported at my college.

I have everything working perfectly however I still get an occasional
packet drop which is not good.

http://www.howtoforge.com/network_card_bonding_centos


By reading the HOWTO and README.txt I am not sure if I am missing
anything else. Has anyone else configured this before?

TIA

Hi John:

Well, we run a lot of statistical analysis and our code loads a lot of
data into a vector for fast calculations. I am not sure how else to do
these calculations fast without loading it into memory. Thats why we
have to do it this way.

TIA

Yes. Thanks. I was thinking of that too. Any other suggestions?

TIA

Hello All:

Running 5.2 at our university. We have several student's processes
that take up too much memory. Our system have 64G of RAM and some
processes take close to 32-48G of RAM. This is causing many problems
for others. I was wondering if there is a way to restrict memory usage
per process? If the process goes over 32G simply kill it. Any thoughts
or ideas?

TIA

Hi All,

I have a backup site and I would like to rsync from production to
backup site. However, I would like to have all backups be compressed
so I can save space. Can anyone recommend a good way to do this? I am
currently using tar and bzip2 to do this.

TIA

Thanks Ralph.

Got libarchive compiled fine, now trying to compile archivemount I
keep getting this error now:

gcc -D_FILE_OFFSET_BITS=64 -O2 -DNDEBUG -Wall -W -MM archivemount.c > dep
gcc -larchive -lfuse -o archivemount archivemount.o
archivemount.o(.text+0x1474): In function `save':
: undefined reference to `archive_write_set_compression_gzip'
archivemount.o(.text+0x147f): In function `save':
: undefined reference to `archive_write_set_compression_bzip2'
collect2: ld returned 1 exit status
make: *** [archivemount] Error 1

Has anyone been able to compile libarchive and archivemount? I want to
use this with fuse.

The compile is very tough for libarchive, I keep getting

c -o tar/bsdtar-util.o `test -f 'tar/util.c' || echo './'`tar/util.c
mv -f tar/.deps/bsdtar-util.Tpo tar/.deps/bsdtar-util.Po
gcc -DHAVE_CONFIG_H -I.  -I./libarchive -I./libarchive   -g -O2 -MT
tar/bsdtar-write.o -MD -MP -MF tar/.deps/bsdtar-write.Tpo -c -o
tar/bsdtar-write.o `test -f 'tar/write.c' || echo './'`tar/write.c
tar/write.c: In function `write_hierarchy':
tar/write.c:730: error: `EXT2_IOC_GETFLAGS' undeclared (first use in
this function)
tar/write.c:730: error: (Each undeclared identifier is reported only once
tar/write.c:730: error: for each function it appears in.)
tar/write.c:732: error: `EXT2_NODUMP_FL' undeclared (first use in this function)
tar/write.c: In function `write_entry':
tar/write.c:915: error: `EXT2_IOC_GETFLAGS' undeclared (first use in
this function)
make[1]: *** [tar/bsdtar-write.o] Error 1
make[1]: Leaving directory `/var/tmp/archivemount-0.5.3/libarchive-2.5.5'
make: *** [all] Error 2

TIA

where can we get ISOs? I can test for VirtualBox atleast. If there is
a problem I will submit a bug.

On Mon, Sep 1, 2008 at 2:42 PM, Patrice Guay
<patrice.guay@nanotechnologies.qc.ca> wrote:
>>> On Sat, Aug 30, 2008 at 8:05 AM, Patrice Guay
>>> <patrice.guay@nanotechnologies.qc.ca> wrote:
>>>> At boot time, the system is looking for a resume signature on the
>>>> default SWAP partition that was defined during the OS installation.
>>>>
>>>> On several systems, I changed the location of the SWAP partition. How do
>>>> I change the location where the system looks at boot time for the resume
>>>> signature?
>>>>
>> 1. Format the swap partition again: sudo mkswap /dev/XXX
>> 2. Activate swap partition sudo swapon /dev/XXX
>> 3. Replace UUID=XXX in /etc/initramfs-tools/conf.d/resume by
>>    "resume=/dev/XXX"
>> 4. Regenerate the initrd: sudo mkinitramfs -o /boot/initrd.img-2.6.XX
>> (same version as the kernel)
>>
>
> I cannot find the /etc/initramfs-tools directory on my system. Which
> package provides it under CentOS 5?
>
> Thanks,
> --
> Patrice
> _______________________________________________
> CentOS mailing list
> [email protected: C...@centos.org]
> http://lists.centos.org/mailman/listinfo/centos
>

This is a Debian specific command. I am certain something like this
exists for CentOS too...

1. Format the swap partition again: sudo mkswap /dev/XXX
2. Activate swap partition sudo swapon /dev/XXX
3. Replace UUID=XXX in /etc/initramfs-tools/conf.d/resume by "resume=/dev/XXX"
4. Regenerate the initrd: sudo mkinitramfs -o /boot/initrd.img-2.6.XX
(same version as the kernel)

Why not create a new swap partition and place it in /etc/fstab ?
You don't have to worry about swap signatures and all...