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Old 05-07-2010, 03:33 AM
"Jason Pyeron"
 
Default USB key installed OS; file system goes read-only randomly...

> -----Original Message-----
> From: John R Pierce
> Sent: Thursday, May 06, 2010 22:54
> Subject: Re: [CentOS] USB key installed OS;file system goes
> read-only randomly...
>
> Jason Pyeron wrote:
> > This happened a few times now, I (soft) reboot and do the
> fsck thing
> > and all is fine until it happens again.
> >
>
> A) your USB key is flakey

New HP v125w 4GB.

>
> B) your systems USB ports are flakey
>

Will search for a BIOS image upgrade.

> C) the cabling between the mainboard and the USB port is flakey.
>

Plugged directly into the MB port.

>
> I've run into C) quite a lot, where front panel USB ports
> don't work reliably at USB2.0 speeds when doing large and/or
> complex operations. I suspect the internal wiring is
> inadequate for the task.
>
>

Ug.

Btw. https://bugzilla.redhat.com/show_bug.cgi?id=494927

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Old 05-08-2010, 01:00 AM
Gordon Messmer
 
Default USB key installed OS; file system goes read-only randomly...

On 05/06/2010 08:33 PM, Jason Pyeron wrote:
>
> Btw. https://bugzilla.redhat.com/show_bug.cgi?id=494927

The original reporter (me) and at least one other reporter tracked those
problems down to bad RAID controllers.

IIRC, another reporter got similar problems when the FS became 100% full.
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Old 05-10-2010, 09:35 AM
Tsuyoshi Nagata
 
Default USB key installed OS; file system goes read-only randomly...

(2010/05/07 11:49), Jason Pyeron wrote:
> <snip/>
> EXT3-fs error (device dm-0): ext3_free_blocks_sb: bit already cleared for block
> 506003

Some bit errors occurred on your usb stick!

>Memory: 445780k/457600k available (2154k kernel code, 11276k reserved, 899k
data, 232k init, 0k highmem)
>Adding 917496k swap on /dev/VolGroup00/LogVol01. Priority:-1 extents:1

you have swap file on ssd, and small memory.
If you know ssd writing algorithm, swap write is losing your usb-stick life.

Buy new memory stick and more memory!
and See the following know how running Linux on SSD.
(see noswap, no /tmp, no /var/log, noatime topics)
http://tombuntu.com/index.php/2008/09/04/four-tweaks-for-using-linux-with-solid-state-drives/
more Linux on SSD know how on web.

-Tsuyoshi
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