pnpm 不推荐指定存储路径背景因为我的代码文件都放在 D 盘，而 pnpm 缓存包的路径也在 D 盘（D:\.pnp

背景

因为我的代码文件都放在 D 盘，而 pnpm 缓存包的路径也在 D 盘（D:\.pnpm-store），所以每次重装系统后这些包都不会自动被清除，我也不会管他，而是继续使用，结果就是在某次安装包时报错了。当我删除 D:\.pnpm-store 文件夹后重新安装，就没问题了。故我想着将缓存包的路径指定在 C 盘，这样每次重装系统时就可以自动清理了。

报错内容

$ pnpm i -D webpack WARN GET https://registry.npmmirror.com/@types/estree/-/estree-1.0.6.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@webassemblyjs/wasm-parser/-/wasm-parser-1.12.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@types/json-schema/-/json-schema-7.0.15.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/terser-webpack-plugin/-/terser-webpack-plugin-5.3.10.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds.2 retries left. WARN GET https://registry.npmmirror.com/acorn/-/acorn-8.14.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/json-parse-even-better-errors/-/json-parse-even-better-errors-2.3.1.tgz error (ERR_PNPM_EPERM). Will retryin 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/browserslist/-/browserslist-4.24.2.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/events/-/events-3.3.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/tapable/-/tapable-2.2.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/webpack/-/webpack-5.95.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/enhanced-resolve/-/enhanced-resolve-5.17.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retriesleft. WARN GET https://registry.npmmirror.com/@webassemblyjs/ast/-/ast-1.12.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/acorn-import-attributes/-/acorn-import-attributes-1.9.5.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/watchpack/-/watchpack-2.4.2.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/schema-utils/-/schema-utils-3.3.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/graceful-fs/-/graceful-fs-4.2.11.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@types/estree/-/estree-1.0.6.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/acorn/-/acorn-8.14.0.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/browserslist/-/browserslist-4.24.2.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/events/-/events-3.3.0.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@webassemblyjs/wasm-parser/-/wasm-parser-1.12.1.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/webpack/-/webpack-5.95.0.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@webassemblyjs/ast/-/ast-1.12.1.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/acorn-import-attributes/-/acorn-import-attributes-1.9.5.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@types/json-schema/-/json-schema-7.0.15.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/terser-webpack-plugin/-/terser-webpack-plugin-5.3.10.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1retries left. WARN GET https://registry.npmmirror.com/tapable/-/tapable-2.2.1.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/schema-utils/-/schema-utils-3.3.0.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/enhanced-resolve/-/enhanced-resolve-5.17.1.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/watchpack/-/watchpack-2.4.2.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/json-parse-even-better-errors/-/json-parse-even-better-errors-2.3.1.tgz error (ERR_PNPM_EPERM). Will retryin 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/graceful-fs/-/graceful-fs-4.2.11.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/node-releases/-/node-releases-2.0.18.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/serialize-javascript/-/serialize-javascript-6.0.2.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@xtuc/long/-/long-4.2.2.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@jridgewell/trace-mapping/-/trace-mapping-0.3.25.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@xtuc/ieee754/-/ieee754-1.2.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/electron-to-chromium/-/electron-to-chromium-1.5.49.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2retries left. WARN GET https://registry.npmmirror.com/@webassemblyjs/ast/-/ast-1.12.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@webassemblyjs/wasm-parser/-/wasm-parser-1.12.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/escalade/-/escalade-3.2.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/picocolors/-/picocolors-1.1.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/terser/-/terser-5.36.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/update-browserslist-db/-/update-browserslist-db-1.1.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/caniuse-lite/-/caniuse-lite-1.0.30001675.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@types/node/-/node-22.8.4.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/merge-stream/-/merge-stream-2.0.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/serialize-javascript/-/serialize-javascript-6.0.2.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@xtuc/long/-/long-4.2.2.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@xtuc/ieee754/-/ieee754-1.2.0.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@webassemblyjs/ast/-/ast-1.12.1.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/electron-to-chromium/-/electron-to-chromium-1.5.49.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/escalade/-/escalade-3.2.0.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@webassemblyjs/wasm-parser/-/wasm-parser-1.12.1.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/picocolors/-/picocolors-1.1.1.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/node-releases/-/node-releases-2.0.18.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/terser/-/terser-5.36.0.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/update-browserslist-db/-/update-browserslist-db-1.1.1.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/caniuse-lite/-/caniuse-lite-1.0.30001675.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@types/node/-/node-22.8.4.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/merge-stream/-/merge-stream-2.0.0.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/@jridgewell/trace-mapping/-/trace-mapping-0.3.25.tgz error (ERR_PNPM_EPERM). Will retry in 1 minute. 1 retries left. WARN GET https://registry.npmmirror.com/randombytes/-/randombytes-2.1.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/supports-color/-/supports-color-8.1.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@jridgewell/source-map/-/source-map-0.3.6.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/commander/-/commander-2.20.3.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/source-map-support/-/source-map-support-0.5.21.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/acorn/-/acorn-8.14.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/punycode/-/punycode-2.3.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/undici-types/-/undici-types-6.19.8.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/safe-buffer/-/safe-buffer-5.2.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/has-flag/-/has-flag-4.0.0.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/@jridgewell/gen-mapping/-/gen-mapping-0.3.5.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/buffer-from/-/buffer-from-1.1.2.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. Packages: +76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ERR_PNPM_EPERM Failed to add tarball from "https://registry.npmmirror.com/webpack/-/webpack-5.95.0.tgz" to store: EPERM: operation not permitted, stat 'D:.pnpm-store\v3\files\e2\bad52e4e244a06f50bd64fcefa7c942febfac5a814c71095106fd3be64634b8381895d4cce884fbe3b2c20043ce210e6322b135b1b9fb2965bd4ae7a57ba8c' This error happened while installing a direct dependency of D:\github-code\browser-extension\react WARN GET https://registry.npmmirror.com/source-map/-/source-map-0.6.1.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET https://registry.npmmirror.com/webpack-sources/-/webpack-sources-3.2.3.tgz error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. Progress: resolved 77, reused 32, downloaded 0, added 29

This error happened while installing a direct dependency of D:\github-code\browser-extension\react WARN GET registry.npmmirror.com/source-map/… error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. WARN GET registry.npmmirror.com/webpack-sou… error (ERR_PNPM_EPERM). Will retry in 10 seconds. 2 retries left. Progress: resolved 77, reused 32, downloaded 0, added 29

指定存储路径方法

修改 pnpm 配置即可指定存储路径，命令如下，来自Configuring | pnpm：

pnpm config set store-dir /path/to/.pnpm-store

为什么不推荐指定存储路径

在知道如何指定存储路径后，我还想知道为什么 pnpm 默认会在 D 盘创建一个 .pnpm-store 文件夹。于是继续查阅文档，结果发现了 pnpm 对此的解释，如下图所示，内容来自Frequently Asked Questions | pnpm：

可以看到：

指定存储路径时，可能会有性能问题。因为当项目和缓存包路径不在同一个磁盘时，那么 pnpm 将会采用复制的方式，而不是硬链接的方式处理。
未指定存储路径时，多个磁盘之间将会有冗余内容，也就是每个磁盘都会有一个 .pnpm-store 文件夹。这样一来，就是空间换时间了，各个磁盘都有自己的一个缓存包文件夹。

再来说说我的使用习惯。我是将所有代码文件放在 D 盘的，而我之前的需求又是将所有包储存在 C 盘，这样一来，那我就是准准地踩中了 pnpm 的性能雷区了。此后我的每次下载，都是从 C 盘复制 D 盘，而我们的 node_modules 之所以号称黑洞，正是因为它文件数量极其多（虽然单个文件很小），这样一来，即使我们磁盘之间的传输速度再快也没用。

最后，我放弃了指定存储路径，并且测试了一下：我有一个空的 F 盘，我在里面 pnpm i typescript ，结果发现 pnpm 提示的是 download，并且磁盘根路径确实创建了一个 .pnpm-store 文件夹。为此也算是证实了文档的内容。