Re: fsck exits with error status, even though no errors are found

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On 09/26/2011 05:55 PM, JD wrote:
> On 09/26/2011 01:49 PM, Rick Stevens wrote:
>> On 09/26/2011 01:25 PM, JD wrote:
>>> On 09/26/2011 12:09 PM, Rick Stevens wrote:
>>>> On 09/26/2011 11:59 AM, JD wrote:
>>>>> kernel-2.6.35.14-96.fc14.i686
>>>>>
>>>>> During boot, when the time comes for fsck'ing
>>>>> the file systems, whatever script is doing that,
>>>>> is exiting with an error status, even though no
>>>>> errors are displayed, and I am prompted to either
>>>>> enter the root password, or type Contrl-D to continue.
>>>>> Cntrl-D simply reboots. Entering the root password,
>>>>> and running fsck manually to check all filesystems in fstab,
>>>>> yields that all is well, no errors are found, and the exit
>>>>> status is 0.
>>>>>
>>>>> Would appreciate some info on identifying the script that
>>>>> does the fsck during boot.
>>>> /etc/rc.d/rc.sysinit is the guy and it'll force an fsck if it sees
>>>> a file called "/forcefsck" or "/.autofsck" in the root of the
>>>> filesystem or if there's a "forcefsck" on the command line of the kernel
>>>> (check your /etc/grub/grub.conf file).
>>> Thanks Rick.
>>>
>>> I checked /etc/rc.d/rc.sysinit
>>> and I see that it does check for the presence of files like:
>>>
>>> if [ -f /fsckoptions ]
>>>
>>>
>>> if [ -f /forcefsck ]
>>>
>>>
>>> elif [ -f /.autofsck ]
>> Remember you need the "-a" option to ls to see files that begin with a
>> dot, e.g. "ls -a /.autofsck".  Just making sure.
>>
>>> [ -f /etc/sysconfig/autofsck ]
>>>
>>> and I have none of these files.
>>>
>>> I checked /boot/grub/grub.conf and I see
>>> no presence of any string like fsck or force
>>> or auto in it.
>>>
>>> The only script I found that invokes /etc/rc.d/rc.sysinit is
>>> /etc/init/rcS.conf, and it is not passing any args to it.
>>>
>>> I wounder if this maybe a bash problem?
>> Do you have other filesystems on other partitions that might be
>> triggering this?  Check your /etc/fstab file and see if any entries
>> have stuff other than "0" as the last field.  Generally, "/" should
>> have a "1" as the last field, "/boot" should have a "2", the rest (if
>> any) should have "0".
>>
>> Also note that the system may force an fsck if you've exceeded the
>> "mounts between fsck runs" or "interval-between-checks" set on ext2/3/4
>> filesystems (and others, I think) via the "tune2fs -c" or "tune2fs -i"
>> commands.  You could run "tune2fs -l" on the block device holding your
>> root filesystem to see what values are set currently.
>>
>> Just an idea.
>> ----------------------------------------------------------------------
>> - Rick Stevens, Systems Engineer, C2 Hosting          ricks@xxxxxxxx -
>> - AIM/Skype: therps2        ICQ: 22643734            Yahoo: origrps2 -
>> -                                                                    -
>> -    First Law of Work:                                              -
>> -    If you can't get it done in the first 24 hours, work nights.    -
>> ----------------------------------------------------------------------
> If this helps any, I instrumented /etc/rc.d/rc.sysinit
> and added to it to print the full fsck command being issued
> and the value of the exit status of fsck.
> Well, here's what my instrumentation printed:
> 
> fsck -T -t noopts=_netdev -A $fsckoptions <<<<<
> rc = 16 <<<<<
> 
> return value of 16? And yet no fsck problems of any kind??
> 
> So is this an fsck bug??
> Has anyone else come across this?

Error 16 is "EBUSY", which leads one to believe that SOMETHING that's
being fsck'd isn't there or hasn't spun up or something.

> 
> ------------------ excerpt from /etc/rc.d/rc.sysinit--------------------
> .
> .
> .
> 
> if [ -z "$fastboot" -a "$READONLY" != "yes" ]; then
> 
>          STRING=$"Checking filesystems"
>      echo $STRING
>      fsck -T -t noopts=_netdev -A $fsckoptions
>      rc=$?
> 
>      if [ "$rc" -eq "0" ]; then
>          success "$STRING"
>          echo
>      elif [ "$rc" -eq "1" ]; then
>              passed "$STRING"
>          echo
>      elif [ "$rc" -eq "2" -o "$rc" -eq "3" ]; then
>          echo $"Unmounting file systems"
>          umount -a
>          mount -n -o remount,ro /
>          echo $"Automatic reboot in progress."
>          reboot -f
>          fi
> 
>          # A return of 4 or higher means there were serious problems.
>      if [ $rc -gt 1 ]; then
>          [ -n "$PLYMOUTH" ] && plymouth --hide-splash
> 
>          failure "$STRING"
>          echo
>          echo
>          echo $"*** An error occurred during the file system check."
>          echo $"*** Dropping you to a shell; the system will reboot"
>          echo $"*** when you leave the shell."
> 
>                  str=$"(Repair filesystem)"
>          PS1="$str \# # "; export PS1
>          [ "$SELINUX_STATE" = "1" ] && disable_selinux
>          sulogin
> 
>          echo $"Unmounting file systems"
>          umount -a
>          mount -n -o remount,ro /
>          echo $"Automatic reboot in progress."
>          reboot -f
>      elif [ "$rc" -eq "1" ]; then
>          _RUN_QUOTACHECK=1
>      fi
> fi
> 


-- 
----------------------------------------------------------------------
- Rick Stevens, Systems Engineer, C2 Hosting          ricks@xxxxxxxx -
- AIM/Skype: therps2        ICQ: 22643734            Yahoo: origrps2 -
-                                                                    -
-          "How does that damned three seashell thing work?"         -
-                           - Sylvester Stallone, "Demolition Man"   -
----------------------------------------------------------------------
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