TAPSET::IOBLOCK(3stap) TAPSET::IOBLOCK(3stap)

# [NAME](#NAME)

tapset::ioblock - systemtap ioblock tapset

# [DESCRIPTION](#DESCRIPTION)

[**ioblock.request**](#ioblock.request)

Fires whenever making a generic block I/O request.

See [*probe::ioblock.request*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock.request.3stap)  
for details.

[**ioblock.end**](#ioblock.end)

Fires whenever a block I/O transfer is complete.

See [*probe::ioblock.end*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock.end.3stap)  
for details.

[**ioblock\_trace.bounce**](#ioblock_trace.bounce)

Fires whenever a buffer bounce is needed for at least one page of a block IO request.

See [*probe::ioblock\_trace.bounce*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock_trace.bounce.3stap)  
for details.

[**ioblock\_trace.request**](#ioblock_trace.request)

Fires just as a generic block I/O request is created for a bio.

See [*probe::ioblock\_trace.request*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock_trace.request.3stap)  
for details.

[**ioblock\_trace.end**](#ioblock_trace.end)

Fires whenever a block I/O transfer is complete.

See [*probe::ioblock\_trace.end*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock_trace.end.3stap)  
for details.

# [SEE ALSO](#SEE_ALSO)

[*probe::ioblock.request*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock.request.3stap), [*probe::ioblock.end*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock.end.3stap), [*probe::ioblock\_trace.bounce*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock_trace.bounce.3stap), [*probe::ioblock\_trace.request*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock_trace.request.3stap), [*probe::ioblock\_trace.end*(3stap)](/man/enterprise-packages/systemtap/probe::ioblock_trace.end.3stap), [*stap*(1)](/man/enterprise-packages/systemtap/stap.1), [*stapprobes*(3stap)](/man/enterprise-packages/systemtap/stapprobes.3stap)

September 2026 SystemTap Tapset Reference

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Document: tapset::ioblock(3stap) from systemtap 5.6-r0 (Chainguard OS)
Source: https://sourceware.org/git/systemtap.git