Can full disk devices can be used as dump device in diskdump for RHEL4?
Environment
- Red Hat Enterprise Linux 4
Issue
- Can full disk devices can be used as dump device in diskdump for RHEL4?
Resolution
From /usr/share/doc/diskdumputils-1.4.1/README,
- Dump Device Selection
The first step in the configuration process is to designate a disk device
to dump memory to in the event of a system crash. The dump device may be
any of the following:
- a full disk device - RHEL3 only - (e.g. /dev/sda)
- a partition of a disk device (e.g. /dev/sda4)
- a swap partition (e.g. /dev/sda2)
However diskdump accesses a disk driver directly, so it cannot dump memory on
block devices that are configured with logical volume or device mapper. That
means the block devices like them cannot be used as dump devices for diskdump.> >
Full disk support is only in RHEL3. In RHEL4 dump device should be a partition.
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