Re: Informix version 5.03 chunk read error
jude@tsi.com.my wrote: | Dear Informix DBA/Specialists, | Has anyone exprienced this errors before on Informix version 5.03.UC1 | On-Line running on a Sequent platform. | In need some help in diagnosing what is the cause of this problem. | Raw disks are being used by Informix here under SVM control and the | permission and access rights are fine. Is your volume on line? Also, some of us went through a catastrophe with 5.03 that caused us to have to learn to decode a whole page structure for data. Can you dd if=/dev/rvol/affectedvolume of=/dev/null bs=128k? In our case, we were running HP-UX 9.04, but I've also deployed Informix Online DS 7.13.UC1 on a Sequent before, and have worked with 5.03.UC1 at my present job. Also, volprint -htv the volume and look to see if it's DISABLED. You have more than one chunk involved, so a combo of tbstat -d and volprint -ht may be needed to figure this out. Definitely a way to get the error again is to tbcheck -Pp 20 60881 and tbcheck -Pp 45 4. | "09:18 I/O read() chunk 20, pagenum 60881, pagecnt 4 ---> errno = 1" | "09:21:04 I/O write() chunk 45, pagenum 29295, pagecnt 1 --> errno = | 4" | ( repeated many times ) | "09:44 I/O read() chunk 45, pagenum 4 pagecnt 1 ---> errno = 2" | I have written my comments based on the Unix system call point of | view. | Please give your comments on this errors from the Informix | prespective. | >"09:21:04 I/O write() chunk 45, pagenum 29295, pagecnt 1 --> errno = | 4" | Errno 4 refers to 1 EINTR "Interuppted system call" which is explained | in manpages intro(2) as 'an aynchronous signal (such as interrupt or | quit) which the user has elected to catch, occured during a system | call. If the execution is resumed after processing the signal, it will | appear as if the interrupted system call returned this error | condition.' | >"09:18 I/O read() chunk 20, pagenum 60881, pagecnt 4 ---> errno = 1" | As for the errno 1 that occured per manpage it refers to | 1 EPERM "Operation not permitted" | >09:44 I/O read() chunk 45, pagenum 4 pagecnt 1 ---> errno = 2" | while errno 2 means ENOENT "No such file or directory". | Thanks in advance. | Jude T. Cruz E-mail:- jude@tsi.com.my | -------------------==== Posted via Deja News ====----------------------- | http://www.dejanews.com/ Search, Read, Post to Usenet -- Thomas A. Endo (tendo@netcom.com) 1 John 1:9