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SubjectRe: 2.6.38: XFS/USB/HW issue, or failing USB stick?
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On Mar 18, 2011, at 10:08 AM, Justin Piszcz wrote:

> Hi,
>
> I can write to just about the entire USB stick, with no errors:
>
> atom:~# df -h
> Filesystem Size Used Avail Use% Mounted on
> /dev/sda2 5.8G 1.5G 4.3G 26% /
> tmpfs 2.0G 0 2.0G 0% /lib/init/rw
> udev 10M 140K 9.9M 2% /dev
> tmpfs 2.0G 0 2.0G 0% /dev/shm
> atom:~# cd /
> atom:/# ls
> bin cdrom etc lib media nfs proc sbin srv tmp var
> boot dev home lib64 mnt opt root selinux sys usr
> atom:/# dd if=/dev/zero of=bigfile bs=1M count=4000
> 4000+0 records in
> 4000+0 records out
> 4194304000 bytes (4.2 GB) copied, 135.536 s, 30.9 MB/s
> atom:/# df -h
> Filesystem Size Used Avail Use% Mounted on
> /dev/sda2 5.8G 5.4G 350M 95% /
> tmpfs 2.0G 0 2.0G 0% /lib/init/rw
> udev 10M 140K 9.9M 2% /dev
> tmpfs 2.0G 0 2.0G 0% /dev/shm
> atom:/# rm bigfile
>
> However, after some amount of time, the errors occur below, is this USB
> stick failing? Since it has no SMART, is there any other way to verify
> the 'health' of a USB stick?

What prompted you to go with XFS over, say, ext2? The journal will generally cause quite a bit more writes onto your USB device. I use ext2 on my CF card in my NAS for that reason (the spinning media is on XFS of course). I know that's not an answer to your problem but thought I would add it as a suggestion :)

Tim



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