restic: restic hangs for any command on b2 repository

Output of restic version

restic 0.12.1 compiled with go1.17.3 on linux/amd64

How did you run restic exactly?

export B2_ACCOUNT_ID="<redacted>"
export B2_ACCOUNT_KEY="<redacted>"

restic -r b2:my-bucket:test init
restic -r b2:my-bucket:restic snapshots # where I have populated my-bucket/restic with an rclone of a local restic repository

I’ve tried with the master key, an application key with read/write on all buckets and an application with read/write access to just the one bucket. None work.

What backend/server/service did you use to store the repository?

Backblaze b2

Expected behavior

I can use the b2 backend of restic

Actual behavior

Running any command that uses a b2 repository, or inits a b2 repository simply hangs.

If I send it a SIGABRT I get:

SIGABRT: abort
PC=0x561f8aeeaf01 m=0 sigcode=0

goroutine 0 [idle]:
runtime.futex()
	runtime/sys_linux_amd64.s:519 +0x21
runtime.futexsleep(0x561f8aeeaaf3, 0x13ef, 0x19989634)
	runtime/os_linux.go:44 +0x36
runtime.notesleep(0x561f8c545fb0)
	runtime/lock_futex.go:160 +0x87
runtime.mPark()
	runtime/proc.go:1441 +0x2a
runtime.stopm()
	runtime/proc.go:2408 +0x78
runtime.findrunnable()
	runtime/proc.go:2984 +0x865
runtime.schedule()
	runtime/proc.go:3367 +0x239
runtime.park_m(0xc0000001a0)
	runtime/proc.go:3516 +0x14d
runtime.mcall()
	runtime/asm_amd64.s:307 +0x45

goroutine 1 [select]:
github.com/kurin/blazer/b2.withBackoff({0x561f8bf1dac8, 0xc000548140}, {0x561f8bf324c8, 0xc00023ad80}, 0xc0005c2c08)
	github.com/kurin/blazer@v0.5.3/b2/backend.go:757 +0x137
github.com/kurin/blazer/b2.(*beBucket).downloadFileByName(0x10100c0005c2ca0, {0x561f8bf1dac8, 0xc000548140}, {0xc000538410, 0x7fcc5ea40f18}, 0x7267000000000010, 0x7)
	github.com/kurin/blazer@v0.5.3/b2/backend.go:446 +0xc5
github.com/kurin/blazer/b2.(*Bucket).getObject(0xc00028a960, {0x561f8bf1dac8, 0xc000548140}, {0xc000538410, 0xd})
	github.com/kurin/blazer@v0.5.3/b2/b2.go:616 +0x55
github.com/kurin/blazer/b2.(*Object).ensure(0xc0005c2e70, {0x561f8bf1dac8, 0xc000548140})
	github.com/kurin/blazer@v0.5.3/b2/b2.go:563 +0x45
github.com/kurin/blazer/b2.(*Object).Attrs(0xc0005c2e70, {0x561f8bf1dac8, 0xc000548140})
	github.com/kurin/blazer@v0.5.3/b2/b2.go:443 +0x45
github.com/restic/restic/internal/backend/b2.(*b2Backend).Stat(0xc000292080, {0x561f8bf1dac8, 0xc000548140}, {{0x561f8b6bdb5c, 0x7ffd1d8ce181}, {0x0, 0x7ffd1d8ce18f}})
	github.com/restic/restic/internal/backend/b2/b2.go:228 +0x156
main.open({_, _}, {{0x7ffd1d8ce17e, 0x17}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, ...}, ...)
	github.com/restic/restic/cmd/restic/global.go:746 +0xb06
main.OpenRepository({{0x7ffd1d8ce17e, 0x17}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, ...})
	github.com/restic/restic/cmd/restic/global.go:437 +0xa5
main.runKey({{0x7ffd1d8ce17e, 0x17}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, ...}, ...)
	github.com/restic/restic/cmd/restic/cmd_key.go:184 +0x1a5
main.glob..func13(0x561f8c533680, {0xc00051de60, 0x3, 0x4})
	github.com/restic/restic/cmd/restic/cmd_key.go:31 +0x6b
github.com/spf13/cobra.(*Command).execute(0x561f8c533680, {0xc000548340, 0x3, 0x4})
	github.com/spf13/cobra@v1.2.1/command.go:856 +0x60e
github.com/spf13/cobra.(*Command).ExecuteC(0x561f8c535480)
	github.com/spf13/cobra@v1.2.1/command.go:974 +0x3bc
github.com/spf13/cobra.(*Command).Execute(...)
	github.com/spf13/cobra@v1.2.1/command.go:902
main.main()
	github.com/restic/restic/cmd/restic/main.go:98 +0x32

goroutine 19 [chan receive]:
github.com/restic/restic/internal/restic.init.0.func1.1()
	github.com/restic/restic/internal/restic/lock.go:254 +0x77
created by github.com/restic/restic/internal/restic.init.0.func1
	github.com/restic/restic/internal/restic/lock.go:251 +0x25

goroutine 34 [syscall]:
os/signal.signal_recv()
	runtime/sigqueue.go:169 +0x98
os/signal.loop()
	os/signal/signal_unix.go:24 +0x19
created by os/signal.Notify.func1.1
	os/signal/signal.go:151 +0x2c

goroutine 35 [select]:
go.opencensus.io/stats/view.(*worker).start(0xc00020a400)
	go.opencensus.io@v0.23.0/stats/view/worker.go:276 +0xb9
created by go.opencensus.io/stats/view.init.0
	go.opencensus.io@v0.23.0/stats/view/worker.go:34 +0x92

goroutine 36 [chan receive]:
main.CleanupHandler(0x0)
	github.com/restic/restic/cmd/restic/cleanup.go:59 +0x39
created by main.init.0
	github.com/restic/restic/cmd/restic/cleanup.go:21 +0x90

rax    0xca
rbx    0x0
rcx    0x561f8aeeaf03
rdx    0x0
rdi    0x561f8c545fb0
rsi    0x80
rbp    0x7ffd1d8cd9c8
rsp    0x7ffd1d8cd980
r8     0x0
r9     0x0
r10    0x0
r11    0x286
r12    0x7ffd1d8cd9f0
r13    0x0
r14    0x561f8c545a80
r15    0x0
rip    0x561f8aeeaf01
rflags 0x286
cs     0x33
fs     0x0
gs     0x0

Steps to reproduce the behavior

set up a b2 bucket, create an application key with access to that bucket, try to run any restic command in that bucket.

Do you have any idea what may have caused this?

no

Do you have an idea how to solve the issue?

no

Did restic help you today? Did it make you happy in any way?

Restic looks really awsome, I wish I could get it to work with b2.

Possibly realted to https://github.com/restic/restic/issues/2172, although that is specifically about an api key limited to a specific prefix, and this fails for every token i’ve generated.

Note: rclone and using the b2 api with curl work fine, so this seems like something specific to restic.