CONFIG_DRBD_FAULT_INJECTION: DRBD fault injection

General informations

The Linux kernel configuration item CONFIG_DRBD_FAULT_INJECTION:

• prompt: DRBD fault injection
• type: bool
• depends on: CONFIG_BLK_DEV_DRBD
• defined in drivers/block/drbd/Kconfig
• found in Linux kernels: 2.6.33–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

Say Y here if you want to simulate IO errors, in order to test DRBD's behavior.

The actual simulation of IO errors is done by writing 3 values to /sys/module/drbd/parameters/

enable_faults: bitmask of... 1 meta data write 2 read 4 resync data write 8 read 16 data write 32 data read 64 read ahead 128 kmalloc of bitmap 256 allocation of peer_requests 512 insert data corruption on receiving side

fault_devs: bitmask of minor numbers fault_rate: frequency in percent

Example: Simulate data write errors on /dev/drbd0 with a probability of 5%. echo 16 > /sys/module/drbd/parameters/enable_faults echo 1 > /sys/module/drbd/parameters/fault_devs echo 5 > /sys/module/drbd/parameters/fault_rate

If unsure, say N.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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