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<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=034513519-19112004>Gary,
I have a simialar configuration RHAS3.0 and a Dell PE6650 connected to an EMC
SAN using 1 emulex Fibre optic card per server. </SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=034513519-19112004>When I do a pvscan I get back
below.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=034513519-19112004>[root@murphy root]# pvscan<BR>pvscan -- reading all
physical volumes (this may take a while...)<BR>pvscan -- ACTIVE PV
"/dev/sda5" of VG "npmu_vg01" [192.89 GB / 11.25 GB free]<BR>pvscan -- inactive
PV "/dev/sdb1" of VG "npmu_vg02" [667.55 GB / 299.55 GB free]<BR>pvscan --
ACTIVE PV "/dev/sdc1" of VG "npmu_vg02" [667.55 GB / 299.55 GB
free]<BR>pvscan -- total: 3 [1.49 TB] / in use: 3 [1.49 TB] / in no VG: 0
[0]</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=034513519-19112004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=034513519-19112004>Sometimes when there is a reboot there ia a problem
either with lvm or powerpath. </SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=034513519-19112004>Have
you had a similar problem in the past?</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=034513519-19112004>If so
is it fixable by a PowerPath configuration or upgrading to
lvm2?</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=034513519-19112004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=034513519-19112004>RedHat
and EMC have not been very helpful.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=034513519-19112004> </DIV>
<DIV><FONT size=2>
<P>[root@pascal root]# pvscan</P>
<P>pvscan -- reading all physical volumes (this may take a while...)</P>
<P>pvscan -- ACTIVE PV "/dev/sda5" of VG "npmu_vg01" [192.89 GB / 12.23 GB
free]</P>
<P>pvscan -- inactive PV "/dev/sdb1" is associated to unknown VG "npmu_vg02"
(run vgscan)</P>
<P>pvscan -- inactive PV "/dev/sdc1" is associated to unknown VG "npmu_vg02"
(run vgscan)</P>
<P>pvscan -- total: 3 [1.49 TB] / in use: 3 [1.49 TB] / in no VG: 0 [0]</P>
<P>[root@pascal root]# vgexport npmu_vg02</P>
<P>vgexport -- ERROR "lvm_tab_vg_remove(): VG doesn't exist" removing volume
group "npmu_vg02" from "/etc/lvmtab"</P>
<P>vgexport -- volume group "npmu_vg02" NOT sucessfully exported</P>
<P>[root@pascal root]# vgimport npmu_vg02 /dev/sdb1</P>
<P>vgimport -- doing automatic backup of volume group "npmu_vg02"</P>
<P>vgimport -- volume group "npmu_vg02" successfully imported and activated</P>
<P>[root@pascal root]# pvscan</P>
<P>pvscan -- reading all physical volumes (this may take a while...)</P>
<P>pvscan -- ACTIVE PV "/dev/sda5" of VG "npmu_vg01" [192.89 GB / 12.23 GB
free]</P>
<P>pvscan -- inactive PV "/dev/sdb1" of VG "npmu_vg02" [667.55 GB / 299.55 GB
free]</P>
<P>pvscan -- ACTIVE PV "/dev/sdc1" of VG "npmu_vg02" [667.55 GB / 299.55 GB
free]</P>
<P>pvscan -- total: 3 [1.49 TB] / in use: 3 [1.49 TB] / in no VG: 0 [0]</P>
<P>[root@pascal root]#</P></FONT><BR></DIV></SPAN></FONT>
<BLOCKQUOTE>
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> linux-lvm-bounces@redhat.com
[mailto:linux-lvm-bounces@redhat.com]<B>On Behalf Of </B>Gary
Mansell<BR><B>Sent:</B> Friday, November 19, 2004 4:47 AM<BR><B>To:</B>
linux-lvm@redhat.com<BR><B>Subject:</B> [linux-lvm] HA Fileserver
configuration recommendation sought.<BR><BR></FONT></DIV>Dear all,<BR><BR>I
currently run RHAS3.0 on a Dell PE2650 which is directly attached to an EMC
FC4500 2TB HW RAID 5 unit via two QLA2310F Fibre Channel cards. I have EMC's
Powerpath software installed to give me multiple paths to the disk subsytem in
case of controller or cable failure. <BR><BR>This configuration has served me
well but is now about to be End Of Life'd by Dell and I need to grow the
storage. There is obviously quite a price premium to pay for this sort of kit
so I was hoping to find a cheaper solution for the future.<BR><BR>I have seen
the Nexsan ATABEAST which is a 16TB ATA array with dual fibre channel
controllers. It seems to be well liked and is reasonably priced but my concern
is how to achieve multiple paths to the disk. How would you recommend
achieving a highly available configuration with this sort of disk
subsystem?<BR><BR>Also, am I correct in thinking that the maximum filesystem
size with RHEL 3.0 is 2TB? Is it possible to get over this limitation with LVM
or some other method?<BR><BR>Any advice gladly received.<BR><BR>Thanks in
advance<BR><BR>Gary Mansell -- <BR><BR><FONT face=arial color=navy size=1
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