[1.14] Implement virtio discard and write zeroes#13

Merged

kalyazin merged 19 commits into

e2b-dev:firecracker-v1.14-direct-memfrom

kalyazin:feat/virtio-blk-discard-wz-1.14

May 12, 2026

Commits on May 11, 2026

refactor(block): expand ConfigSpace to full virtio-blk layout
kalyazin
committed
refactor(block): add Discard request type and discard segment struct
kalyazin
committed
feat(block): add discard method to FileEngine using fallocate
kalyazin
committed
style(seccomp): fix indentation and trailing whitespace in filter files
kalyazin
committed
feat(seccomp): allow fallocate syscall in vmm thread filter
kalyazin
committed
feat(block): handle VIRTIO_BLK_T_DISCARD requests
kalyazin
committed
chore(snapshot): fix ConfigSpace restore for VIRTIO_BLK_F_DISCARD
kalyazin
committed
feat(block): advertise VIRTIO_BLK_F_DISCARD for non-read-only devices
kalyazin
committed
doc(block): document VIRTIO_BLK_F_DISCARD discard support
kalyazin
committed
test(block): add unit tests for VIRTIO_BLK_F_DISCARD
kalyazin
committed
test(block): add pytest integration tests for VIRTIO_BLK_F_DISCARD
kalyazin
committed
refactor(block): extend ConfigSpace with write-zeroes fields
kalyazin
committed
refactor(block): add WriteZeroes request type and supporting variants
kalyazin
committed
feat(block): add write_zeroes method to FileEngine using fallocate
kalyazin
committed
feat(block): handle VIRTIO_BLK_T_WRITE_ZEROES requests
kalyazin
committed
feat(block): advertise VIRTIO_BLK_F_WRITE_ZEROES for non-read-only devices
kalyazin
committed
test(block): add unit tests for VIRTIO_BLK_F_WRITE_ZEROES
kalyazin
committed
test(block): add pytest integration tests for VIRTIO_BLK_F_WRITE_ZEROES
kalyazin
committed
doc(block): document VIRTIO_BLK_F_WRITE_ZEROES support
kalyazin
committed

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[1.14] Implement virtio discard and write zeroes#13

[1.14] Implement virtio discard and write zeroes#13
kalyazin merged 19 commits into
e2b-dev:firecracker-v1.14-direct-memfrom
kalyazin:feat/virtio-blk-discard-wz-1.14

Commits on May 11, 2026

refactor(block): expand ConfigSpace to full virtio-blk layout

refactor(block): add Discard request type and discard segment struct

feat(block): add discard method to FileEngine using fallocate

style(seccomp): fix indentation and trailing whitespace in filter files

feat(seccomp): allow fallocate syscall in vmm thread filter

feat(block): handle VIRTIO_BLK_T_DISCARD requests

chore(snapshot): fix ConfigSpace restore for VIRTIO_BLK_F_DISCARD

feat(block): advertise VIRTIO_BLK_F_DISCARD for non-read-only devices

doc(block): document VIRTIO_BLK_F_DISCARD discard support

test(block): add unit tests for VIRTIO_BLK_F_DISCARD

test(block): add pytest integration tests for VIRTIO_BLK_F_DISCARD

refactor(block): extend ConfigSpace with write-zeroes fields

refactor(block): add WriteZeroes request type and supporting variants

feat(block): add write_zeroes method to FileEngine using fallocate

feat(block): handle VIRTIO_BLK_T_WRITE_ZEROES requests

feat(block): advertise VIRTIO_BLK_F_WRITE_ZEROES for non-read-only devices

test(block): add unit tests for VIRTIO_BLK_F_WRITE_ZEROES

test(block): add pytest integration tests for VIRTIO_BLK_F_WRITE_ZEROES

doc(block): document VIRTIO_BLK_F_WRITE_ZEROES support