can't read memory.max from cgroup v2: open /sys/fs/up/memory.max: no such file or directory | Dagger | Page 1

pastel lance Apr 12, 2026, 12:14 AM

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I've been getting this error since 0.20.3; 0.20.1 is the last working version for me. It may be a MacOS w/colima issue; I did not run into this with Ubuntu.

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exec /tidb-server
[2026/04/12 00:06:11.819 +00:00] [FATAL] [terror.go:309] ["unexpected error"] [error="can't read memory.max from cgroup v2: open /sys/fs/
up/memory.max: no such file or directory"] [errorVerbose="open /sys/fs/cgroup/memory.max: no such file or directory\ncan't read memory.max from cgroup v2\ngithub.com/pingcap/tidb/pkg/util/cgroup.readInt64Value\n\t/workspace/source/tidb/pkg/util/cgroup/cgroup.go:437\ngithub.com/
cap/tidb/pkg/util/cgroup.detectMemLimitInV2\n\t/workspace/source/tidb/pkg/util/cgroup/cgroup_memory.go:194\ngithub.com/pingcap/tidb/pkg/u
cgroup.getCgroupMemLimit\n\t/workspace/source/tidb/pkg/util/cgroup/cgroup_memory.go:171\ngithub.com/pingcap/tidb/pkg/util/cgroup.GetMemor
it\n\t/workspace/source/tidb/pkg/util/cgroup/cgroup_memory.go:42\ngithub.com/pingcap/tidb/pkg/util/memory.MemTotalCGroup\n\t/workspace/so
/tidb/pkg/util/memory/meminfo.go:116\ngithub.com/pingcap/tidb/pkg/util/memory.init.0\n\t/workspace/source/tidb/pkg/util/memory/meminfo.go
\nruntime.doInit1\n\t/usr/local/go/src/runtime/proc.go:7291\nruntime.doInit\n\t/usr/local/go/src/runtime/proc.go:7258\nruntime.main\n\t/u
ocal/go/src/runtime/proc.go:254\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_arm64.s:1223"] [stack="github.com/pingcap/tidb/pkg/parse
rror.MustNil\n\t/workspace/source/tidb/pkg/parser/terror/terror.go:309\ngithub.com/pingcap/tidb/pkg/util/memory.init.0\n\t/workspace/sour
idb/pkg/util/memory/meminfo.go:168\nruntime.doInit1\n\t/usr/local/go/src/runtime/proc.go:7291\nruntime.doInit\n\t/usr/local/go/src/runtim
oc.go:7258\nruntime.main\n\t/usr/local/go/src/runtime/proc.go:254"] [stack="github.com/pingcap/tidb/pkg/parser/terror.MustNil\n\t/workspa
ource/tidb/pkg/parser/terror/terror.go:309\ngithub.com/pingcap/tidb/pkg/util/memory.init.0\n\t/workspace/source/tidb/pkg/util/memory/memi
go:168\nruntime.doInit1\n\t/usr/local/go/src/runtime/proc.go:7291\nruntime.doInit\n\t/usr/local/go/src/runtime/proc.go:7258\nruntime.main
/usr/local/go/src/runtime/proc.go:254"]```

marble warren Apr 12, 2026, 4:36 PM

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Hey, we’ve released 0.20.5 in the meantime, do you hit it too ? We’re planning on a follow up release. Taking a look

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How could I repro ?

pastel lance Apr 12, 2026, 11:09 PM

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Thanks, @marble warren Yes, I did hit it with 0.20.5. I'll prepare a MWE.

fervent hatch Apr 13, 2026, 11:53 PM

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pastel lance ``` exec /tidb-server [2026/04/12 00:06:11.819 +00:00] [FATAL] [terror.go:309] [...

@pastel lance found the issue and will be fixed in the next Dagger release