cannot open chunk errno = 6
After imaging an Informix 5.11 system onto a new HP-UX box, tbinit failed with "Cannot Open Primary Chunk '/dev/informix/rootcen', errno = 6" (no such device or address), even though the device file appeared to exist with correct informix ownership and 660 permissions. Suggestions were to check the physical disk/links/permissions, watch for PA-RISC-to-Itanium issues, and test the chunk with dd piped to od -c. dd also failed with "No such device", confirming the /dev entry was just a copied file node not tied to a real device; the sysadmin found the actual raw device was not associated with /dev/informix, which was the cause.
Auto-generated by DrWatson from the posts below — may be imperfect; read the full thread.
Hi, our Informix 5.11 server has been migrated using imaging on HP-UX hssd11 B.11.00. Images of all the F/S including raw devices have been copied in the new server also the OS version remains the same But tbinit is giving tbinit: cannot open chunk '/dev/informix/rootcen', errno = 6 tbinit: fatal error in shared memory initialization 09:30:40 Cannot Open Primary Chunk '/dev/informix/rootcen', errno = 6 09:30:40 semop failed. errno : 209:30:402, proc id 15891 Cannot Open Primary Chunk '/dev/informix/rootcen', errno = 6 09:30:40 semop failed. errno : 22, proc id 15892 whereas I can see the device is present in the new server as crw-rw---- 1 informix informix 64 0x020021 May 14 2002 /dev/informix/rootcen Any idea?
Regards. As I saw on other searches, the oserr=6 means: -------------------------------------------------- Below is an extract from the 'Error Messages' manual:- -6 No such device or address. An operating-system error code with the meaning shown was unexpectedly returned to the database server. You might have made an error when you configured the database software or in the REPORT TO clause of a report. Look for other operating-system error messages that might give more information. This would tend to indicate the 'lump' of disk to which these file/links refer is not available. Check the following:- 1. The physical disk is attached and working and not throwing any errors. 2. The links are pointing correctly to the raw partitons. 3. The raw partitions are owned by informix, group to informix and have permissions 660. Hope this helps. Alexandre Marini Tecnologia da Informação - DBA SEFAZ-MS / SGI-UIMP / Sistemas IBM-Informix IIUG Member <http://www.iiug.org>; PRABAL DAS escreveu: > Hi, our Informix 5.11 server has been migrated using imaging on HP-UX hssd11 > B.11.00. Images of all the F/S including raw devices have been copied in the > new server also the OS version remains the same > > But tbinit is giving > > tbinit: cannot open chunk '/dev/informix/rootcen', errno = 6 > tbinit: fatal error in shared memory initialization > 09:30:40 Cannot Open Primary Chunk '/dev/informix/rootcen', errno = 6 > 09:30:40 semop failed. errno : 209:30:402, proc id 15891 Cannot > Open Primary Chunk '/dev/informix/rootcen', errno = 6 > 09:30:40 semop failed. errno : 22, proc id 15892 > > whereas I can see the device is present in the new server as > > crw-rw---- 1 informix informix 64 0x020021 May 14 2002 /dev/informix/rootcen > > Any idea? > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > >
Did you go from PA-RISC to Itanium? That may be the problem. Or the copy failed: Try to read the chunk using dd and pipe the output through od -c. The first page of the root chunk should show the Informix copyright string. If dd fails or the contents of that first page are not right, your copy didn't work. Art Art S. Kagel Oninit (www.oninit.com) IIUG Board of Directors (art@iiug.org) Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Oninit, the IIUG, nor any other organization with which I am associated either explicitly or implicitly. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves. On Thu, Nov 12, 2009 at 8:36 AM, PRABAL DAS <d.prabal@gmail.com> wrote: > Hi, our Informix 5.11 server has been migrated using imaging on HP-UX > hssd11 > B.11.00. Images of all the F/S including raw devices have been copied in > the > new server also the OS version remains the same > > But tbinit is giving > > tbinit: cannot open chunk '/dev/informix/rootcen', errno = 6 > tbinit: fatal error in shared memory initialization > 09:30:40 Cannot Open Primary Chunk '/dev/informix/rootcen', errno = 6 > 09:30:40 semop failed. errno : 209:30:402, proc id 15891 Cannot > Open Primary Chunk '/dev/informix/rootcen', errno = 6 > 09:30:40 semop failed. errno : 22, proc id 15892 > > whereas I can see the device is present in the new server as > > crw-rw---- 1 informix informix 64 0x020021 May 14 2002 > /dev/informix/rootcen > > Any idea? > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > --0015174c0f027e5f0104782e35a2
Thanx I tried with dd if=/dev/informix/rootcen of /home/informix/xyz |od -c >newfile Since the chunks are directly pointing to the raw devices and here we do not use symlinks " crw-rw---- 1 informix informix 64 0x020021 May 14 /dev/informix/rootcen " Whether the above is okay since I am getting " dd: /dev/informix/rootcen No such device..."
Which OS is this again? Might want to verify that those major/minor #s are a real device or just directory entries after being copied from the other machine. Bob ----- Original Message ----- From: "PRABAL DAS" <d.prabal@gmail.com> To: ids@iiug.org Sent: Friday, November 13, 2009 8:55:03 AM GMT -05:00 US/Canada Eastern Subject: Re: cannot open chunk errno = 6 [18104] Thanx I tried with dd if=/dev/informix/rootcen of /home/informix/xyz |od -c >newfile Since the chunks are directly pointing to the raw devices and here we do not use symlinks " crw-rw---- 1 informix informix 64 0x020021 May 14 /dev/informix/rootcen " Whether the above is okay since I am getting " dd: /dev/informix/rootcen No such device..." ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum.
It looks like the underlying physical device is no longer associated with that raw device file in /dev Art Art S. Kagel Oninit (www.oninit.com) IIUG Board of Directors (art@iiug.org) Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Oninit, the IIUG, nor any other organization with which I am associated either explicitly or implicitly. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves. On Fri, Nov 13, 2009 at 8:55 AM, PRABAL DAS <d.prabal@gmail.com> wrote: > Thanx > > I tried with > > dd if=/dev/informix/rootcen of /home/informix/xyz |od -c >newfile > > Since the chunks are directly pointing to the raw devices and here we do > not > use symlinks > > " crw-rw---- 1 informix informix 64 0x020021 May 14 /dev/informix/rootcen " > > Whether the above is okay since I am getting > > " dd: /dev/informix/rootcen No such device..." > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > --00151747bfe2dacf6a04785ca8f3
Yes, the actual device is not associated with /dev/informix, as clarified by the SA after relooking into it. Thanks for your help