Bug #1083
closeddfly-2.0.0-REL: panic: hammer: insufficient undo FIFO space!
0%
Description
OS: dfly-2.0.0-REL
I backed up my 5GB win2k ntfs partition to a disk image file on my Hammer FS
(6GB in size). When removing the image file, panic occurs.
To reproduce panic:
NOTE: assuming Hammer FS is mounted on /hammer dir and /root is symlinked to
/hammer/root.
- cd /root
- cat /dev/ad0s1 > c.img
- rm c.img
 PANIC
Screen Shot of Panic: http://www.bmk.com.au/webshare/hammer_panic.jpg
My dmesg: http://www.bmk.com.au/webshare/dmesg.txt
My fdisk, disklabel & fstab: http://www.bmk.com.au/webshare/labels.txt
       Updated by dillon over 17 years ago
      Updated by dillon over 17 years ago
      
    
    :OS: dfly-2.0.0-REL
:
:I backed up my 5GB win2k ntfs partition to a disk image file on my Hammer FS
:(6GB in size). When removing the image file, panic occurs.
:
:To reproduce panic:
:
:NOTE: assuming Hammer FS is mounted on /hammer dir and /root is symlinked to
:/hammer/root.
:
:# cd /root
:# cat /dev/ad0s1 > c.img
:# rm c.img
:   PANIC
Ok, I'm on it.  It's probably due to the tiny undo fifo one gets
    when one has a tiny 6GB filesystem.-Matt
                    Matthew Dillon 
                    <dillon@backplane.com>
       Updated by bastyaelvtars over 17 years ago
      Updated by bastyaelvtars over 17 years ago
      
    
    On Wed, 23 Jul 2008 11:05:06 -0700 (PDT)
Matthew Dillon <dillon@apollo.backplane.com> wrote:
This is strange. I have my 4gig /usr on HAMMER and did not have such
panics.
       Updated by bastyaelvtars about 16 years ago
      Updated by bastyaelvtars about 16 years ago
      
    
    correction: I am also experiencing this on 2.4.1 and did so on 2.4.0. Has not
happened before.
       Updated by mk about 16 years ago
      Updated by mk about 16 years ago
      
    
    Yes, that's because the installer uses "-f" on the the newfs_hammer command.
By doing this, they have disabled the feature that protects us from a 
too small undo FIFO.
Gergo Szakal (via DragonFly issue tracker) wrote:
Gergo Szakal <bastyaelvtars@gmail.com> added the comment:
correction: I am also experiencing this on 2.4.1 and did so on 2.4.0. Has not
happened before._____________________________________________
DragonFly issue tracker <bugs@lists.dragonflybsd.org>
<http://bugs.dragonflybsd.org/issue1083>
_____________________________________________
       Updated by ftigeot almost 14 years ago
      Updated by ftigeot almost 14 years ago
      
    
    - Description updated (diff)
- Status changed from New to Resolved
A warning saying smaller than 10GB HAMMER filesystems are unsupported has been added to the installer.
       Updated by ftigeot almost 14 years ago
      Updated by ftigeot almost 14 years ago
      
    
    - Status changed from Resolved to Closed
- Assignee deleted (0)