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feat(disk): a resume boots before its disk is copied in (ADR 0125 amended) - #1783

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nikhilunni merged 35 commits into

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disk/lazy-through-fill

Nov 10, 2026

Merged

feat(disk): a resume boots before its disk is copied in (ADR 0125 amended)#1783
nikhilunni merged 35 commits into
mainfrom
disk/lazy-through-fill

Commits on Nov 9, 2026
- disk-thin: dm-clone tables, skip discards, hydration control, cutover
  
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- disk-thin: suspend, operation and resume as one task; resume on open
  
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- host-agent: BlkSource, a ublk device served by the fill engine
  
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  c7bcefa
- host-core: one lazy stage path
  
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  ea0b6e8
- host-agent: the restore boots before the disk hydrates
  
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  e16160a
- host-core, disk-thin: checkpoints of a hydrating volume
  
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- host-core, host-agent: disk first-touch prefix
  
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- host-core, host-agent: a hydrating source moves by snapshot
  
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- docs: ADR 0125 amended for the hydrating resume; DESIGN.md session disk
  
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- host-core: reattach serves a role once; one failed sandbox does not stop the pass
  
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- disk-thin, host-agent: root tests read off the runtime and name the metadata thin
  
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Commits on Nov 10, 2026
- disk-thin, host-core: a settled volume is a thin of its own
  
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  dc35978
- nix: the dev shell tracks nixos-26.05, which has Node 26
  
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  ddbbab1
- host-core: a restore picks its base by what it shares, not by name
  
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  060d2db
- dst-cosim: the simulated host forks without a base hint
  
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- host-core: only a snapshot taken after the settle becomes a checkpoint volume
  
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- disk-thin, host-core: a failed hydrate and an interrupted settle leave no metadata volume
  
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- host-agent: the settle driver serves a hydrating disk first, for every live sandbox
  
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  5efba72
- host-agent: the source stalls on a store error, and a guest read does not wait at Hydrate
  
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  4e99bce
- host-core: disk.hydrate says where its time goes
  
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  1062145
- docs: the lazy resume's upgrade note, rollback rule and review facts
  
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  e044932
- ci: the root lane accepts a built-in ublk driver and says what the kernel has
  
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  bdce025
- ci: the ublk source's tests run on a kernel that has ublk
  
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  6815718
- host-agent: a read that meets a shutting-down host-agent waits for the next one
  
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- host-agent: only a read outside the window is a first touch
  
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- host-agent, disk-thin: the copy is limited by the pool's disk, not by its own window
  
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  3c9c547
- ci: the ublk lane loads the module before it looks for a package
  
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  bee8b64
- host-agent, disk-thin, helm: the two hydration limits are settings
  
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  fd710d4
- fill: a whole chunk read for a volume is not hashed
  
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  9f8c125
- host-agent: the periodic checkpoint waits for the disks to settle
  
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  6f0eacc
- docs: the hydration settings, the unhashed read and the checkpoint hold
  
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  ef3b469
- disk-thin: the dm-clone table names its arguments
  
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  b864319
- ci: the ublk lane shows where a hung test waits
  
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  67f05f9
- host-agent: a source device gets no partition scan
  
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- host-agent: the source does not set the no-partition-scan flag
  
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  4317b0c

Commits

Commits on Nov 9, 2026

Commits on Nov 10, 2026