Repository navigation

disk: lazy session disk, steps 1 and 2 (ADR 0127) - #1747

Closed

nikhilunni wants to merge 38 commits into

mainfrom

disk/lazy-restore

Closed

disk: lazy session disk, steps 1 and 2 (ADR 0127)#1747
nikhilunni wants to merge 38 commits into
mainfrom
disk/lazy-restore

Commits on Nov 6, 2026
- docs(adr): 0126 the lazy session disk (Proposed)
  
  nikhilunni
  and
  claude
  committed
  05e8907
- docs(adr): renumber the lazy session disk to 0127 and add what was learned
  
  nikhilunni
  and
  claude
  committed
  2162a0a
- disk-source: a read-only ublk device whose bytes are one manifest
  
  nikhilunni
  and
  claude
  committed
  bb1b6ce
- disk-source: root-lane tests against the kernel ublk driver
  
  nikhilunni
  and
  claude
  committed
  cd12445
- disk-source: test lost data and a stalled read separately
  
  nikhilunni
  and
  claude
  committed
  35a6911
- disk-source: keep in-flight memo cells and check base volume bytes
  
  nikhilunni
  and
  claude
  committed
  ed5e035
- disk-source: move the read retry policy out of the ublk server
  
  nikhilunni
  and
  claude
  committed
  3ad201b
- disk-source: always answer a ublk request, and refuse a recovery of another shape
  
  nikhilunni
  and
  claude
  committed
  41525e2
- disk-source: root tests cannot leave a device or a process behind
  
  nikhilunni
  and
  claude
  committed
  579f87c
- disk-thin: one path removes a device and one opens a new one
  
  nikhilunni
  and
  claude
  committed
  36f3175
- disk: SessionDisk makes cloned drives (ADR 0127 step 2)
  
  nikhilunni
  and
  claude
  committed
  fd5e99c
- disk-thin: root tests for cloned drives, run on the KVM lane
  
  nikhilunni
  and
  claude
  committed
  d177d95
- docs(adr): 0127 checkpoint view takes its snapshots under a suspend
  
  nikhilunni
  and
  claude
  committed
  ecb3355
- disk-thin: a suspend runs to its resume, and open resumes what a death left
  
  nikhilunni
  and
  claude
  committed
  586f199
- disk: a drive owns its volumes, and FileDisk refuses what ThinPoolDisk refuses
  
  nikhilunni
  and
  claude
  committed
  25c1065
- disk-thin: ThinPoolDisk tells drives, views and half-made drives apart
  
  nikhilunni
  and
  claude
  committed
  8ce6077
- docs(adr): 0127 states why the checkpoint pair is consistent, and the region format
  
  nikhilunni
  and
  claude
  committed
  b65828c
- docs(adr): 0127 the eager restore is bound by disk writes
  
  nikhilunni
  and
  claude
  committed
  5e63b48
- ci: report the runner kernel's block features, check targets directly
  
  nikhilunni
  and
  claude
  committed
  f981e50
- docs(adr): 0127 the shape of the lazy restore in the host-agent
  
  nikhilunni
  and
  claude
  committed
  c4857f1
- ci: run the ublk disk-source tests on a lane of their own
  
  nikhilunni
  and
  claude
  committed
  8471b6c
- host-core: session volumes understand lazy role names
  
  nikhilunni
  and
  claude
  committed
  5ac41c8
- host-core: lazy provision and release of a session role
  
  nikhilunni
  and
  claude
  committed
  6ba8eb4
- host-core: checkpoint a session role while it hydrates
  
  nikhilunni
  and
  claude
  committed
  302ad94
- host-core: lazy checkpoint and teardown fixes from review
  
  nikhilunni
  and
  claude
  committed
  ad9870c
- docs(adr): 0127 the rollback limit and the discard dependency
  
  nikhilunni
  and
  claude
  committed
  2cf8e08
- host-agent: run each lazy disk source as a process of its own
  
  nikhilunni
  and
  claude
  committed
  eba6975
- ci: pin protoc on the ublk lane
  
  nikhilunni
  and
  claude
  committed
  3e40c4d
- host-core: cut a hydrated session role over to its destination
  
  nikhilunni
  and
  claude
  committed
  b7db3a1
- host-agent: a sandbox owns the hydration of its disks
  
  nikhilunni
  and
  claude
  committed
  502f934
- host-agent: restore a session disk lazily when its bytes are not local
  
  nikhilunni
  and
  claude
  committed
  6a30135
- host-agent: one eager budget for all of a restore's disks
  
  nikhilunni
  and
  claude
  committed
  e51b1a5
- host-agent: lazy disk sources survive a flag change and a cancel
  
  nikhilunni
  and
  claude
  committed
  4b1972a
- disk: a lazy restore copies only the regions its destination lacks
  
  nikhilunni
  and
  claude
  committed
  8fd7258
- test(disk-thin): stop the source after the cutover, as the host-agent does
  
  nikhilunni
  and
  claude
  committed
  7205255
- docs(adr): 0127 hydration copies only what the destination lacks
  
  nikhilunni
  and
  claude
  committed
  18d1a75
- host-agent: a move destination restores its disks eagerly
  
  nikhilunni
  and
  claude
  committed
  9adff3e
- host-core: the first checkpoint after a cutover reads only the chunks the disk maps
  
  nikhilunni
  and
  claude
  committed
  aa4bb48

Commits

Commits on Nov 6, 2026