Hi,
>It turns out that DB2 expects to be able to do direct IO, but ZFS does not
>support that. This caused errors when writing to the DB
We have the same environment: 6200 and 6201 on solaris 10 x86(10/09) zones with
on ZFS pool for DB and other for STG. We haven't experienced any DB errors so
far.
Coul you report what kind of write DB errors you've got ?
Thks,
Justino Costa | Solution Specialist Outsourcing Services
Rua Particular EDP, à Rua Cidade de Goa, 11, 2686-964 Sacavém | Portugal
M: +351 93 683 02 59
justino.costa AT logica DOT com | www.logica.pt
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Steve Harris
Sent: quinta-feira, 17 de Junho de 2010 1:26
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] TSM 6.2 server Solaris installation notes
Hi All
I'm just dropping this note here for the next fellow that comes along.
Installing TSM 6.2.0.0 Server on Solaris 10 X86_64 (AMD)
I went to TSM support to find out which filesystem to use for the DB since
there are two free choices and UFS is a known poor performer. Previously we
have always used raw volumes. They advised that either was supported and that
anything more than that would have to be taken up as a consulting job.
So, I decided to go with ZFS.
It turns out that DB2 expects to be able to do direct IO, but ZFS does not
support that. This caused errors when writing to the DB
The fix is to change the FS_CACHING parameter on the tablespaces as follows
Become the instance owner
connect to database
query catalog to get FS_CACHING setting
Change all FS_CACHING=1 to 0
restart TSM
my log ....
bash-3.00$ id
uid=205(tsminst1) gid=200(tsm)
bash-3.00$ db2 connect to tsmdb1
Database Connection Information
Database server = DB2/SUNX8664 9.7.1
SQL authorization ID = TSMINST1
Local database alias = TSMDB1
bash-3.00$ db2 "SELECT substr(TBSP_NAME,1,40) as TBSP_NAME, TBSP_TYPE,
TBSP_CONTENT_TYPE, FS_CACHING FROM TABLE(SNAP_GET_TBSP(CAST(NULL AS
VARCHAR(1)),-1)) AS T" | tee sel.txt
TBSP_NAME TBSP_TYPE TBSP_CONTENT_TYPE
FS_CACHING
---------------------------------------- --------- -----------------
----------
SYSCATSPACE 0 0
1
TEMPSPACE1 1 2
0
USERSPACE1 0 1
1
TSMTEMP 1 3
0
IDXSPACE1 0 1
1
LARGESPACE1 0 1
1
LARGEIDXSPACE1 0 1
1
LGTMPTSP 1 2
0
SYSTOOLSPACE 0 1
1
SYSTOOLSTMPSPACE 1 3
0
10 record(s) selected.
bash-3.00$ awk '$4==1 {print "db2 alter tablespace",$1,"file system caching"}'
sel.txt | tee alter_tbs.sh
db2 alter tablespace SYSCATSPACE file system caching
db2 alter tablespace USERSPACE1 file system caching
db2 alter tablespace IDXSPACE1 file system caching
db2 alter tablespace LARGESPACE1 file system caching
db2 alter tablespace LARGEIDXSPACE1 file system caching
db2 alter tablespace SYSTOOLSPACE file system caching bash-3.00$ . alter_tbs.sh
DB20000I The SQL command completed successfully.
DB20000I The SQL command completed successfully.
DB20000I The SQL command completed successfully.
DB20000I The SQL command completed successfully.
DB20000I The SQL command completed successfully.
DB20000I The SQL command completed successfully.
bash-3.00$ db2 "SELECT substr(TBSP_NAME,1,40) as TBSP_NAME, TBSP_TYPE,
TBSP_CONTENT_TYPE, FS_CACHING FROM TABLE(SNAP_GET_TBSP(CAST(NULL AS
VARCHAR(1)),-1)) AS T"
TBSP_NAME TBSP_TYPE TBSP_CONTENT_TYPE
FS_CACHING
---------------------------------------- --------- -----------------
----------
SYSCATSPACE 0 0
0
TEMPSPACE1 1 2
0
USERSPACE1 0 1
0
TSMTEMP 1 3
0
IDXSPACE1 0 1
0
LARGESPACE1 0 1
0
LARGEIDXSPACE1 0 1
0
LGTMPTSP 1 2
0
SYSTOOLSPACE 0 1
0
SYSTOOLSTMPSPACE 1 3
0
Also note that 12GB is not enough virtual memory to run a library manager with
minimal configuration.
I have 8GB of real and 4GB of swap on this zone and am running out of swap
space.
I have another zone with the library client instance. It has a lot of
definitions but only two real clients, both user workstations. it is using 16GB
of real and 42% of its 16GB of swap.
The old rule of thumb swap=2xreal may apply here.
Regards
Steve.
Steven Harris
TSM Admin,
Paraparaumu New Zealand
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