<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:D="DAV:" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 12 (filtered medium)"> <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> I’m running Red Hat AS 4 on a Dell PowerEdge 1950. It connects to an Apple Xserve RAID via a Qlogic QLE2460 card. I am able to create a 4TB ext3 partition with no problems and use it fine. When the system power drops or it’s rebooted, the file system can’t be mounted again. It looks like the partition table is getting corrupted. Here is some of the doc I gathered:<o:p></o:p> <o:p> </o:p> Output from fsck:<o:p></o:p> <o:p> </o:p> fsck /dev/sdb1<o:p></o:p> fsck 1.35 (28-Feb-2004)<o:p></o:p> e2fsck 1.35 (28-Feb-2004)<o:p></o:p> <o:p> </o:p> The filesystem size (according to the superblock) is 1098848000 blocks<o:p></o:p> <o:p> </o:p> The physical size of the device is 25106176 blocks<o:p></o:p> Either the superblock or the partition table is likely to be corrupt!<o:p></o:p> <o:p> </o:p> ----------------------------------------------------------------------------<o:p></o:p> Output from parted:<o:p></o:p> <o:p> </o:p> parted /dev/sdb<o:p></o:p> GNU Parted 1.6.19<o:p></o:p> Copyright (C) 1998 - 2004 Free Software Foundation, Inc.^M<o:p></o:p> This program is free software, covered by the GNU General Public License.<o:p></o:p> <o:p> </o:p> This program is distributed in the hope that it will be useful, but WITHOUT<o:p></o:p> ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS<o:p></o:p> FOR A PARTICULAR PURPOSE. See the GNU General Public License for more<o:p></o:p> details.<o:p></o:p> <o:p> </o:p> Using /dev/sdb<o:p></o:p> (parted) print<o:p></o:p> Disk geometry for /dev/sdb: 0.000-4292376.000 megabytes<o:p></o:p> Disk label type: msdos<o:p></o:p> Minor Start End Type Filesystem Flags<o:p></o:p> 1 0.031 98071.031 primary ext3 <o:p></o:p> (parted) check 1<o:p></o:p> Warning: Partition 1 is 98071.000Mb, but the file system is 4292375.000Mb.<o:p></o:p> <o:p> </o:p> ---------------------------------------------------------------------------<o:p></o:p> Output from debugfs:<o:p></o:p> <o:p> </o:p> debugfs /dev/sdb<o:p></o:p> debugfs 1.35 (28-Feb-2004)<o:p></o:p> /dev/sdb: Bad magic number in super-block while opening filesystem<o:p></o:p> debugfs: open /dev/sdb1<o:p></o:p> /dev/sdb1: Can't read an inode bitmap while reading inode bitmap<o:p></o:p> debugfs: quit<o:p></o:p> ----------------------------------------------------------------------------<o:p></o:p> We connect via a Qlogic QLE2460 to the Apple XServe RAID:<o:p></o:p> <o:p> </o:p> qla2400 0000:0c:00.0:<o:p></o:p> QLogic Fibre Channel HBA Driver: 8.01.07<o:p></o:p> QLogic QLE2460 - PCI-Express to 4Gb FC, Single Channel<o:p></o:p> ISP2432: PCIe (2.5Gb/s x4) @ 0000:0c:00.0 hdma+, host#=1, fw=4.00.26 [IP]<o:p></o:p> Vendor: APPLE Model: Xserve RAID Rev: 1.51<o:p></o:p> Type: Direct-Access ANSI SCSI revision: 05<o:p></o:p> qla2400 0000:0c:00.0: scsi(1:0:0:0): Enabled tagged queuing, queue depth 32.<o:p></o:p> sdb : very big device. try to use READ CAPACITY(16).<o:p></o:p> SCSI device sdb: 8790786048 512-byte hdwr sectors (4500882 MB)<o:p></o:p> SCSI device sdb: drive cache: write back<o:p></o:p> sdb : very big device. try to use READ CAPACITY(16).<o:p></o:p> SCSI device sdb: 8790786048 512-byte hdwr sectors (4500882 MB)<o:p></o:p> SCSI device sdb: drive cache: write back<o:p></o:p> sdb: sdb1<o:p></o:p> Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0<o:p></o:p> <o:p> </o:p> ----------------------------------------------------------------------------<o:p></o:p> Current output of parted after I remade the file system and restored the data:<o:p></o:p> <o:p> </o:p> parted /dev/sdb1<o:p></o:p> GNU Parted 1.6.19<o:p></o:p> Copyright (C) 1998 - 2004 Free Software Foundation, Inc.<o:p></o:p> This program is free software, covered by the GNU General Public License.<o:p></o:p> <o:p> </o:p> This program is distributed in the hope that it will be useful, but WITHOUT ANY<o:p></o:p> WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A<o:p></o:p> PARTICULAR PURPOSE. See the GNU General Public License for more details.<o:p></o:p> <o:p> </o:p> Using /dev/sdb1<o:p></o:p> (parted) print<o:p></o:p> Disk geometry for /dev/sdb1: 0.000-4292375.967 megabytes<o:p></o:p> Disk label type: loop<o:p></o:p> Minor Start End Filesystem Flags<o:p></o:p> 1 0.000 4292375.967 ext3<o:p></o:p> <o:p> </o:p> I’m afraid this will happen again the next time I reboot the system. Any ideas what might be causing it and how to fix it?<o:p></o:p> <o:p> </o:p> Thanks,<o:p></o:p> Randy<o:p></o:p> <o:p> </o:p> </div> </body> </html>