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: "sandeen@xxxxxxxxxxx" <sandeen@xxxxxxxxxxx> To: tirumalareddy marri <tirumalareddymarri@xxxxxxxxx> Cc: linux-raid@xxxxxxxxxxxxxxx; linux-ext4@xxxxxxxxxxxxxxx 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 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
