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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Matt Campbell <br>
<b>Sent:</b> Friday, December 04, 2009 7:38 PM<br>
<b>To:</b> 'SGVLUG Discussion List.'<br>
<b>Subject:</b> Missing ext2 devices<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Good evening,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have run into an odd problem and am hoping you can help.<o:p></o:p></p>
<p class=MsoNormal>- I upgraded my main server from FC8 to FC12 this evening.<o:p></o:p></p>
<p class=MsoNormal>- I replaced the boot HD so that I would have a snapshot
backup of the old system in case of problems.<o:p></o:p></p>
<p class=MsoNormal>- I installed the new OS on a fresh HD and tried to mount
the old partitions to get at the databases.<o:p></o:p></p>
<p class=MsoNormal>- Under F12 the old ext2 partitions don’t get created in
/dev.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal># ls /dev/sd*<o:p></o:p></p>
<p class=MsoNormal>/dev/sda /dev/sda2 /dev/sda4
/dev/sdb /dev/sdb2 /dev/sdb4<o:p></o:p></p>
<p class=MsoNormal>/dev/sda1 /dev/sda3 /dev/sda5
/dev/sdb1 /dev/sdb3 /dev/sdc<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Notice there is a /dev/sdc, but no partition device
nodes. When I look the partitions are there and appear happy (see the
text at the end of this message). I can still boot off the old HD so it
is working properly.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>When
I just create a new device node it doesn’t work properly:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>#
mknod /dev/sdc2 b 8 34<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>#
mount -t ext2 /dev/sdc2 /mnt/sdc2<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>mount:
/dev/sdc2 is not a valid block device<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>When
I try and take a closer look at a partition I get an odd error:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>#
parted /dev/sdc<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>
check 3<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>
checking for bad blocks… 100%<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>
check 5<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>
Error: File system has an incompatible feature enabled. Compatible
features are<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>has_journal,
dir_index, filetype, sparse_super and large_file. Use tune2fs or<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>debugfs
to remove features.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Googling
this error yields a number of solutions, but they all depend on having a device
to act on.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Any
ideas of how to proceed?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Matt<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>root@nala:5#
fdisk /dev/sdc<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Command
(m for help): p<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Disk
/dev/sdc: 251.0 GB, 251000193024 bytes<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>255
heads, 63 sectors/track, 30515 cylinders<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Units
= cylinders of 16065 * 512 = 8225280 bytes<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Disk
identifier: 0x00070acf<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>
Device Boot
Start
End Blocks Id System<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>/dev/sdc1
* 1
25 200781 83 Linux<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>/dev/sdc2
26 1937
15358140 83 Linux<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>/dev/sdc3
1938 2574
5116702+ 82 Linux swap / Solaris<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>/dev/sdc4
2575 30515
224436082+ 5 Extended<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>/dev/sdc5
2575 30515
224436051 83 Linux<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>root@nala:6#
parted /dev/sdc<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>GNU
Parted 1.9.0<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Using
/dev/sdc<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Welcome
to GNU Parted! Type 'help' to view a list of commands.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>(parted)
p
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Model:
ATA Maxtor 6B250S0 (scsi)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Disk
/dev/sdc: 251GB<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Sector
size (logical/physical): 512B/512B<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Partition
Table: msdos<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Number
Start End Size
Type File system Flags<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'> 1
32.3kB 206MB 206MB primary
ext2 boot<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'> 2
206MB 15.9GB 15.7GB primary ext2<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'> 3
15.9GB 21.2GB 5240MB primary linux-swap(v1)
swap<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'> 4
21.2GB 251GB 230GB extended<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'> 5
21.2GB 251GB 230GB logical ext3<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>--
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Matthew
Campbell | Chief Technical Officer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Imagination
Games<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>3330
Cahuenga Boulevard West, 5th Floor<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Los
Angeles, CA 90068<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>323.850.1354
x2026 (O)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>818.314.9897
(M)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>matt.campbell@imaginationgames.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>www.imaginationgames.com</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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