Red Hat Bugzilla – Bug 230535
flash drive hangs while copying to
Last modified: 2008-05-06 15:17:30 EDT
Description of problem:
Process of copying a large file (~700Mb) to flash drive deadly hangs after
first few megabytes, with no messages neither in /var/log/messages nor dmesg.
ps shows that usb-storage status is 'D' (uninterruptible sleep).
With smaller files all is ok. Very similar issue was discussed at Ubuntu
bugzilla (bug#17881): https://launchpad.net/ubuntu/+source/linux-source-2.6.12/
+bug/17881 . Besides my FC6 box, the same issue have present on my FC4 box.
My flash drive is 1Gb Kingston.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. mount flash drive
2. start copying to it a large file using cp or mc.
3. wait :-)
The speed of copying quickly decreases until it deads at all.
The file was copied successfully
Bug # 17881 (Ubuntu): https://launchpad.net/ubuntu/+source/linux-source-2.6.12/
What does happen if you use ub? Please boot with libusual.bias="ub" in grub
and use /dev/uba1 instead of /dev/sdb1 (or whatever is an appropriate
device in this case).
Dave/Chuck: I'm not taking this for now because it seems like the reoccurence
of the old writeout throttling issue (notice how ancient Ubuntu's kernel is).
Might be something for riel to look into, if it can be reproduced.
(In reply to comment #1)
> Dave/Chuck: I'm not taking this for now because it seems like the reoccurence
> of the old writeout throttling issue (notice how ancient Ubuntu's kernel is).
> Might be something for riel to look into, if it can be reproduced.
Can we change settings in /proc/sys/vm to keep this from happening?
Here's the thread from this February:
http://lkml.org/lkml/2007/2/21/377 <--- patch 1
http://lkml.org/lkml/2007/2/22/263 <--- woops, braces :-)
Created attachment 149667 [details]
Moving this one to FC6, since it seems to actually be active.
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