Messages in this thread | | | Date | Fri, 24 Apr 1998 10:04:41 -0600 | From | Doug Fortune <> | Subject | 2.1.9x - not recognizing ext2 partitions |
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re: ext2 (non-root) partitions not recognized
We have a box: - SuperMicro P6DNE dual 150 PPro, 128MB parity EDO - a single Adaptec 2940UW (one scsi channel) - a single Adaptec 3940UW (two more scsi channels) - a 9GB UW Seagate boot disk - 5 more 9GB UW Seagate drives (mostly 1 partition/drive) - 1 more 9GB 80-pin SCA Seagate (with cable converter) - a scsi Jaz, a scsi Exabyte 8505XLS - an Adaptec/Cogent 21140 ethernet running various recent drivers from Becker
which has run nicely for a few years on older kernels (lately Red Hat 4.0 running 2.0.30 )
However, recent attempts to RAID 0 two of the drives results in an uptime of only 12-24 hours (vs months before!) resulting eventually in an "aaaaaiiiieeeeeeeeee" scrolling error message (system crash).
Let me put in a good word for the MD RAID 0 driver: we have at least 50 PPro boxes running dual 9GB UW Seagates and Fujitsu's with no problems whatsoever... (RH 4.1, kernel 2.0.27 ).
We were trying the latest kernels, (2.1.97 the latest), and invariably it would boot fine, hence obviously recognizing the ext2 boot partition. However the other disks are mounted with a script manually, which would fail.
Running the script, the error message similar for each and every drive (and the RAID 0 md0 ) is:
"Couldn't find EXT2 superblock ... trying backup blocks e2fsck Bad Magic number in Superblock while trying to open /dev/sdc1
They were originally formatted with mke2fs -c -b4096 -i4096 /dev/sdc1 -m 1 -v (or possibly -b8192 -i8192 which used to work but doesn't seem to lately).
Rebooting with the working kernel (2.0.30) finds no problems with the superblocks.
The problem restated: modern 2.1.9x kernels do not recognize older ext2 partitions - possibly related to -b4096 -i4096 or -b8192 -i8192 formatting.
I'm not on this Kernel maillist, so please cc your responses (and/or tests for me to perform) to me as well as the list.
Thanks Doug Fortune International Datashare Corp Calgary
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