Hi Eric,
??? This is PowerPC architecture from AMCC(I work for AMCC). I am using 2.6.25 Kernel. According your suggestion I tested with out RAID I did not see any EXT-3 errors. I use "sum" command to check the data integrity of the files.
I ported ADMA driver to do HW accelerated XOR calculations . Also please note that RAID-5 works with 4K Page size.
Thanks,
Marri
----- Original Message ----
From: "[email protected]" <[email protected]>
To: tirumalareddy marri <[email protected]>
Cc: [email protected]; [email protected]
Sent: Sunday, July 27, 2008 6:52:05 PM
Subject: Re: 64k Page size + ext3 errors
> I am using HW accelerated XOR engine for RAID-5 . I am seeing EXT3-fs
> errors when I use 64K page size. When I use 4K page size I don't see any
> issue. As many of you know, we?will get better performance when we store
> bigger files like videos.
Do you think it is specific to the filesystem on raid-5?? Have you tested
w/o md?? I'd be a little surprised if the problem is at the raid layer (so
cc'ing the ext3/4 list), but maybe you tested that already.
Which arch is it, and which kernel?? How big is the filesystem?? With full
geometry information it might be easier for someone to reproduce & debug.
Thanks,
-Eric
> When I copy 128MB size files using 64k page size no issues seen. When I
> tried to copy 1.8 GB file with 64KB page size support I am seeing the
> following errors. Any clue what could be wrong.
> ?
> Errors 1:
> EXT3-fs error (device md0): ext3_new_block: Allocating block in system
> zone - blocks from 65533, length 1
> EXT3-fs error (device md0): ext3_new_block: Allocating block in system
> zone - blocks from 65534, length 1
> ?
> ?
> Errors2:
> EXT3-fs error (device md0): ext3_readdir: bad entry in directory #2:
> rec_len % 4 != 0 - offset=0, inode=3040
>
> ?
> Thanks in Advance,
> Marri