Hi Dirk,

It is normal for a volume in ADSM (whether it is a tape volume or a
disk volume) to go into a read-only mode when it has encountered
a write error. The reasoning behind that is simple: If you are getting
write errors to a volume it is better to mark the volume as read-only
than risk writing more data to the volume and then getting a complete
disk crash or permanent I/O error. The read-only flag that ADSM puts
on the volume has nothing to do with unix - ADSM only uses this flag
for it's own perpose.

Hope this clears things up.

Regards

Christo Heuer
ABSA Group
Johannesburg
SOUTH AFRICA


>Hi ADSM'ers
>
>this night we encountert the following problem with our ADSM-Server
>AIX 4.1.5 ADSM V2L15. Disk-File(adsm-volume) was full, then SP-volumes
>get the error and go to read-only mode. That's not normal.
>
>
>@/ADSM2>dir
>total 12429328
>drwxr-sr-x   2 sys      sys          512 Feb 05 11:49 .
>drwxr-xr-x  23 bin      bin         1024 Mar 06 09:36 ..
>-rw-r--r--   1 root     ADSM     2121269248 Mar 06 00:10 datavol01.dsm
>-rw-r--r--   1 root     ADSM     2121269248 Feb 13 16:36 datavol03.dsm
>-rw-r--r--   1 root     ADSM     2121269248 Mar 06 00:19 datavol05.dsm
>@/ADSM2>
>
>ADSTAR Distributed Storage Manager
>Command Line Administrative Interface - Version 2, Release 1, Level 0.7
>(C) Copyright IBM Corporation, 1990, 1996, All Rights Reserved.
>
>ANS5100I Session established with server XXXXXX: AIX-RS/6000
>ANS5101I Server command: 'q actlog search=error'
>
>Date/Time            Message
>-------------------- ------------------------------------------------------
>----
>06.03.1998 00:10:37  ANR9999D blkdisk.c(1245): Error writing to disk
>                      /ADSM2/datavol01.dsm.
>06.03.1998 00:10:37  ANR9999D dsalloc.c(1899): Error writing to volume
>                      /ADSM2/datavol01.dsm: execRc=-1, summaryRc=-1.
>06.03.1998 00:10:37  ANR1411W Access mode for volume /ADSM2/datavol01.dsm
>                      now set to "read-only" due to write error.
>06.03.1998 00:10:37  ANR0523W Transaction failed for session 164 for node
>                      XXXXXXXX (WinNT) - error on output storage device.
>06.03.1998 00:19:12  ANR9999D blkdisk.c(1245): Error writing to disk
>                      /ADSM2/datavol05.dsm.
>06.03.1998 00:19:12  ANR9999D dsalloc.c(1899): Error writing to volume
>                      /ADSM2/datavol05.dsm: execRc=-1, summaryRc=-1.
>06.03.1998 00:19:12  ANR1411W Access mode for volume /ADSM2/datavol05.dsm
>                      now set to "read-only" due to write error.
>06.03.1998 00:19:12  ANR0523W Transaction failed for session 164 for node
>                      XXXXXXXX (WinNT) - error on output storage device.
>
>thanx for any help and recommend's
>d.pohl (v.i.s. informationssysteme gmbh)
>dirk_pohl AT visinfosys DOT com