 | | | Kernel file system support under RHEL | Kernel file system support under RHEL 2005-06-20 - By Chiu, PCM (Peter)
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I sent the following post, but suspect it didn't reach the list, so try
it again.
We have just recently acquired a few 24 x 400GB SATA servers with 3Com
9500S-12 controllers. The 24 drives are configured into 2 x Raid 5 sets
with the 9500S controllers, so each RAID set should have a capacity of
4TB.
Under RHEL AS 3 update 3, the RAIDs are recognised as sda and sdb
devices with 2TB capacity each, as opposed to 4.
If I then mount RHEL AS 4, "fdisk -l" shows sda and sdb being 4TB each,
but mke2fs -j /dev/sda or sdb will only make a 1.8GB file system on each
device. (1.8GB is not a typing mistake.)
I tried to check the kernel with make menuconfig, but I cannot find a
suitable option to specify a larger file system.
Is this an oversight or a bug?
The feature page on RedHat clearly states the support of 8TB under RHEL
AS 4. Did try to check RedHat knowledge database and bugzilla but cannot
locate any reference.
By the way, the processors are dual AMD 248 with 4GB RAM, and I did
select the x86-64 versions of the RHEL.
Any suggestion?
Thanks.
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<P><FONT SIZE=2 FACE="Arial">I sent the following post, but suspect it didn't
reach the list, so try it again.</FONT>
</P>
<BR>
<P><FONT SIZE=2 FACE="Courier New">We have just recently acquired a few 24 x
400GB SATA servers with 3Com 9500S-12 controllers. The 24 drives are
configured into 2 x Raid 5 sets with the 9500S controllers, so each RAID set
should have a capacity of 4TB.</FONT></P>
<P><FONT SIZE=2 FACE="Courier New">Under RHEL AS 3 update 3, the RAIDs are
recognised as sda and sdb devices with 2TB capacity each, as opposed to 4.<
/FONT>
</P>
<P><FONT SIZE=2 FACE="Courier New">If I then mount RHEL AS 4, "fdisk -l
" shows sda and sdb being 4TB each, but mke2fs -j /dev/sda or sdb will only
make a 1.8GB file system on each device. (1.8GB is not a typing mistake.)</FONT
></P>
<P><FONT SIZE=2 FACE="Courier New">I tried to check the kernel with make
menuconfig, but I cannot find a suitable option to specify a larger file system
.</FONT>
</P>
<P><FONT SIZE=2 FACE="Courier New">Is this an oversight or a bug? </FONT>
<BR><FONT SIZE=2 FACE="Courier New">The feature page on RedHat clearly states
the support of 8TB under RHEL AS 4. Did try to check RedHat knowledge database
and bugzilla but cannot locate any reference.</FONT></P>
<P><FONT SIZE=2 FACE="Courier New">By the way, the processors are dual AMD 248
with 4GB RAM, and I did select the x86-64 versions of the RHEL.</FONT>
</P>
<P><FONT SIZE=2 FACE="Courier New">Any suggestion? </FONT>
</P>
<P><FONT SIZE=2 FACE="Courier New">Thanks.</FONT>
</P>
<BR>
</BODY>
</HTML>
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