On 05/21/2015 02:39 PM, Sitsofe Wheeler wrote:
On 21 May 2015 at 15:22, David Nellans <david@xxxxxxxxxxx> wrote:
you're randwrite to a raw partition. if you had a filesystem on that
partition you were trying to use, then well, your data is gone/corrupted.
without a filesystem on it, i'm not sure how you'd think that your disc
usage has become "100%" without some xgui widgit warning you, so seems
likely you did something you didn't mean to with regards to writing to
/dev/sdb1 directly
if you use fio on devices/partitions with a filesystem, you need to have it
write to files or it will trash your filesystem
It's unlikely but it wasn't mentioned which partition became 100%
full. You should also make sure that /dev/sdb1 really exists as a
block device (e.g. via using file) otherwise you'll make/fill a
standard file called /dev/sdb1 .
That's true, though on modern systems that will fail since /dev is
mounted on devtmpfs which doesn't support O_DIRECT. In general,
allow_file_create=0 can be used to turn off file creation if you expect
to run on block devices. This can avoid problems like this.
--
Jens Axboe
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