New subject: [Bug 573192] system hangs on timely usb disk processes such as dd, parted, reiserfsck

22 Jan 2010

      http://bugzilla.novell.com/show_bug.cgi?id=573192

http://bugzilla.novell.com/show_bug.cgi?id=573192#c0

           Summary: system hangs on timely usb disk processes such as dd,
                    parted, reiserfsck
    Classification: openSUSE
           Product: openSUSE 11.1
           Version: Final
          Platform: i586
        OS/Version: openSUSE 11.1
            Status: NEW
          Severity: Critical
          Priority: P5 - None
         Component: Kernel
        AssignedTo: bnc-team-screening@forge.provo.novell.com
        ReportedBy: polbrian@orange.fr
         QAContact: qa@suse.de
          Found By: ---
           Blocker: ---

Created an attachment (id=338407)
 --> (http://bugzilla.novell.com/attachment.cgi?id=338407)
hardware description

User-Agent:       Mozilla/5.0 (compatible; Konqueror/4.1; Linux) KHTML/4.1.3
(like Gecko) SUSE

I have gone through the same data recovery process described below successfully
with SuSE 9.3.

In order to recover lost data I need to 
 (the first
either internal IDE or USB, the second an external USB disk).
Alternatively I can use (parted) copy or dd_rhelp.

Then I use reiserfsck --scan-whole-disk --rebuild-tree to recover data.

These processes last several hours on a 300GB disk.

Well, that is how it worked with SuSE 9.3. In 11.1, after a variable time and a
variable number of read or transferred bytes, processes hang, whatever the
runlevel. In runlevel 5 the mouse freezes, in all runlevels the keyboard does
not respond. The only way out I have found is the hard reset.

I have performed memory test and monitored disk temperature, which is not
warmer than 41° (casing). I suppose some scheduled process interferes. 

Reproducible: Always

Steps to Reproduce:
1. AS ROOT init 3 [optional]
2. umount /dev/sdb1
3. dd /dev/sdb1 /dev/sdf1
Actual Results:  
system hangs

Expected Results:  
copy whole partition to external disk

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[Bug 573192] New: system hangs on timely usb disk processes such as dd, parted, reiserfsck

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