30 lines
1.4 KiB
TypeScript
30 lines
1.4 KiB
TypeScript
import { BaseSchema } from '@adonisjs/lucid/schema'
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/**
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* fragments, with its indexes, back in the catalog's tablespace (default_tablespace: nvme on homelab), out of
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* CHUNK_TABLESPACE where 3200 put it: it isn't read by key only. The fragment merger walks its file_key index and
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* reads each row, written and deleted all the time; on the HDD one round of its 30 s budget took 12+ minutes, and the
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* coordinator's settling and tail planning waited behind it (LOG.md 2026-10-15 (57)). 13 GB. Homelab was moved by
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* hand first, with the writers stopped; a no-op where it's there already, or without a default tablespace (tests).
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*/
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export default class extends BaseSchema {
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async up() {
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this.defer(async (db) => {
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const { rows: setting } = await db.rawQuery(`SELECT current_setting('default_tablespace') AS target`)
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const target = setting[0].target
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if (!target) return
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const { rows } = await db.rawQuery(
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`SELECT c.relname, c.relkind FROM pg_class c LEFT JOIN pg_tablespace t ON t.oid = c.reltablespace
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WHERE (c.relname = 'fragments' OR c.oid IN (SELECT indexrelid FROM pg_index WHERE indrelid = 'fragments'::regclass))
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AND coalesce(t.spcname, 'pg_default') <> ?`,
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[target]
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)
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for (const { relname, relkind } of rows) {
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await db.rawQuery(`ALTER ${relkind === 'i' ? 'INDEX' : 'TABLE'} ${relname} SET TABLESPACE ${target}`)
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}
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})
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}
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async down() {}
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}
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