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List:       hpux-admin
Subject:    [HPADM] the use of msgbuf?
From:       Laguere <claguere () atos-group ! com>
Date:       2000-05-30 13:01:40
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Hi admin,

Here i have a question :
I have a file named /var/adm/msgbuf that have SCSI messages and others.
This file apear in the man of dmesg as the memory crash file for - option
This file have always the same size : 4100
If I put it to 0 with " > msgbuf " it is regenerate with the same message.

^F0`^LM-'olt: 292663042, dev: 1f016000, io_id: 1012372

SCSI: Abort Tag -- lbolt: 292663042, dev: 1f016000, io_id: 101246b

SCSI: Abort Tag -- lbolt: 292663042, dev: 1f016000, io_id: 101246c

SCSI: First party detected bus hang -- lbolt: 292663142, bus: 1
                lbp->state: 5020
                lbp->offset: f8
                lbp->uPhysScript: 300000
        From most recent interrupt:
                ISTAT: 22, SIST0: 04, SIST1: 00, DSTAT: 80, DSPS: 00000006
        NCR chip register access history (most recent last): 52 accesses
                       3, ISTAT<-20
                       1, DSP<-003000f8
                     242, ISTAT: 22
                       3, SSTAT0: 04
                       3, DSTAT: 80
                       1, DSPS: 00000006
                       0, SCRATCH: ff00087b
                       1, DSP: 00300058
                       0, SCRATCH1<-00
                       0, CTEST8<-04
......
20:  LCRC:     37    CTEST8:   20    ISTAT:    0a    DFIFO:    00
         24:  DCMDDBC:  9f0b0000
         28:  DNAD:     00300058
         2c:  DSP:      00300058
         30:  DSPS:     00000006
         34:  SCRATCH:  ff00087c
         38:  DCNTL:    01    DWT:      00    DIEN:     7f    DMODE:    c0
         3c:  ADDER:    0030005e

SCSI: Resetting SCSI -- lbolt: 292663442, bus: 1

SCSI: Reset detected -- lbolt: 292663442, bus: 1
LVM: PV 0 has been returned to vg[0].
/: file system full
/: file system full
/: file system full
/: file system full
/: file system full
....
/: file system full
/: file system full
/: file system full
0000006
        NCR chip register access history (most recent last): 8 accesses
                    3205, ISTAT: 22
                       1, SSTAT0: 04
                       2, DSTAT: 80
                       1, DSPS: 00000006
                       0, SCRATCH: ff000871
                       1, DSP: 00300058
                       0, SCRATCH1<-00
                       0, CTEST8<-04
        lsp: 4ec7500
                bp->b_dev: 1f016000
                scb->io_id: 1012462
                scb->cdb: 2a 00 00 47 53 b0 00 00 10 00
                lbolt_at_timeout: 292659842, lbolt_at_start: 292659842
                lsp->state: 10d
        lbp->owner: 4ec7500
        scratch_lsp: 0
        Pre-DSP script dump [4382030]:
                78347100 0000000a 78350800 00000000
                0e000004 003003c0 80000000 00000000
        Script dump [4382050]:
                9f0b0000 00000006 0a000000 003003c8
                72160000 00000000 98080000 00000001

SCSI: Abort Tag -- lbolt: 292663042, dev: 1f016000, io_id: 1012462

SCSI: Abort Tag -- lbolt: 292663042, dev: 1f016000, io_id: 1012466

SCSI: Abort Tag -- lb^LM-'


My config is :
1 disk on vg00 and mirrored on the same controler (the same type) : PV1 is
c1t6d0 and PV2 is c1t5d0
R390 with 512M. Oracle is on vg01
and sysdef guives me :

NAME                      VALUE       BOOT        MIN-MAX        UNITS
FLAGS
acctresume                    4          -       -100-100                -
acctsuspend                   2          -       -100-100                -
allocate_fs_swapmap           0          -           -                   -
bufpages                  26214          -          0-           Pages   -
create_fastlinks              0          -           -                   -
dbc_max_pct                  20          -           -                   -
dbc_min_pct                   5          -           -                   -
default_disk_ir               0          -           -                   -
dskless_node                  0          -          0-1                  -
eisa_io_estimate            768          -           -                   -
eqmemsize                    17          -           -                   -
file_pad                     10          -          0-                   -
fs_async                      0          -          0-1                  -
hpux_aes_override             0          -           -                   -
maxdsiz                   16384          -        256-655360     Pages   -
maxfiles                   2048          -         30-2048               -
maxfiles_lim               2048          -         30-2048               -
maxssiz                    2048          -        256-655360     Pages   -
maxswapchunks              4096          -          1-16384              -
maxtsiz                   16384          -        256-655360     Pages   -
maxuprc                    1168          -          3-                   -
maxvgs                       80          -           -                   -
msgmap                 95682560          -          3-                   -
nbuf                      16716          -          0-                   -
ncallout                   1477          -          6-                   -
ncdnode                     150          -           -                   -
ndilbuffers                  30          -          1-                   -
netisr_priority              -1          -         -1-127                -
netmemmax              45936640          -           -                   -
nfile                     23973          -         14-                   -
nflocks                    1461          -          2-                   -
ninode                    13736          -         14-                   -
no_lvm_disks                  0          -           -                   -
nproc                      1461          -         10-                   -
npty                        400          -          1-                   -
nstrpty                      60          -           -                   -
nswapdev                     25          -          1-25                 -
nswapfs                      10          -          1-25                 -
public_shlibs                 1          -           -                   -
remote_nfs_swap               0          -           -                   -
rtsched_numpri               32          -           -                   -
sema                          0          -          0-1                  -
semmap                191430656          -          4-                   -
shmem                         0          -          0-1                  -
shmmni                      512          -          3-1024               -
streampipes                   0          -          0-                   -
swapmem_on                    0          -           -                   -
swchunk                    2048          -       2048-16384      kBytes  -
timeslice                     1          -         -1-2147483648 Ticks   -
unlockable_mem             6702          -          0-           Pages   -


I notice that i have sometime a WIO very high (when i make a fbackup for
exemple) and my disk c1t6d0 ,who seems to provoque the scsi message, is 50%
busy (sar -d)

I wan't to know if someone have already met this problem or can give me some
advices ?

Thanks a lot,


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