Hi, i am a newer with fio. i have written a read_iolog and use fio to run the trace in a device /dev/sdb1, but it had errors when add --direct=1. the errors is as follows: replay: (g=0): rw=read, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1 fio 2.0.6 Starting 1 process fio: first direct IO errored. File system may not support direct IO, or iomem_align= is bad. fio: pid=6363, err=22/file:engines/sync.c:62, func=xfer, error=Invalid argument the trace file is as follows: fio version 2 iolog /dev/sdb1 add /dev/sdb1 open /dev/sdb1 read 27267456 8 /dev/sdb1 read 27267560 8 /dev/sdb1 read 34933120 8 /dev/sdb1 read 34933128 8 /dev/sdb1 read 34933136 8 /dev/sdb1 read 34933144 8 /dev/sdb1 read 34604888 8 /dev/sdb1 close The filesystem on /dev/sdb1 is ext3 which supports the O_DIRECT, and the trace file use block size as 512 byte. I do not know where the error is and how to solve it ? thanks Best regards, linbin. -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
