12-23-2019
Hi Neo and rbattel
my system are using GPFS(archive directory) and raw devices with Oracle RAC on the hacmp.
I think the reason why A-system has down itself is that B-system is down due to system bug and all oracle sessions of B-system node are moved to A-system, which causes huge IO on A-system. The sync time of the A-system was slowed down, and as a result, the system was down when the dead man switch limit was reached.
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LEARN ABOUT NETBSD
mount_ados
MOUNT_ADOS(8) BSD System Manager's Manual MOUNT_ADOS(8)
NAME
mount_ados -- mount an AmigaDOS file system
SYNOPSIS
mount_ados [-o options] [-u uid] [-g gid] [-m mask] special node
DESCRIPTION
The mount_ados command attaches the AmigaDOS filesystem residing on the device special to the global filesystem namespace at the location
indicated by node. Both special and node are converted to absolute paths before use. This command is normally executed by mount(8) at boot
time, but can be used by any user to mount an AmigaDOS file system on any directory that they own (provided, of course, that they have appro-
priate access to the device that contains the file system).
The options are as follows:
-o options
Use the specified mount options, as described in mount(8).
-u uid Set the owner of the files in the file system to uid. The default owner is the owner of the directory on which the file system is
being mounted.
-g gid Set the group of the files in the file system to gid. The default group is the group of the directory on which the file system is
being mounted.
-m mask
Specify the maximum file permissions for files in the file system. (For example, a mask of 755 specifies that, by default, the owner
should have read, write, and execute permissions for files, but others should only have read and execute permissions. See chmod(1)
for more information about octal file modes.) Only the nine low-order bits of mask are used. The default mask is taken from the
directory on which the file system is being mounted.
SEE ALSO
mount(2), unmount(2), fstab(5), mount(8)
HISTORY
The mount_ados utility first appeared in NetBSD 1.0.
BUGS
The 'ados' filesystem currently supports the Amiga fast file system.
The 'ados' filesystem implementation currently is read-only. The mount_ados utility silently retries the mount read-only, as if the ro
option were specified, when it encounters the [EROFS] error.
BSD
April 7, 1994 BSD