[Backport stable-25-3-1] PR #34447: Fix VERIFY caused by dstool group take-snapshot when VDisk is in NotReady or Error state

[ydbot]

Changelog entry

Fix VERIFY caused by dstool group take-snapshot when VDisk is in NotReady or Error state: - Fix VERIFY caused by dstool group take-snapshot when VDisk is in NotReady or Error state

Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

Original PR(s)

• PR Fix VERIFY caused by dstool group take-snapshot when VDisk is in NotReady or Error state #34447

Metadata

• Original PR author(s): @rosik
• Cherry-picked by: @rosik
• Related issues: None

Conflicts Require Manual Resolution

This PR contains merge conflicts that require manual resolution.

Files with conflicts:

• ydb/tests/functional/dstool/canondata/result.json
• ydb/tests/functional/dstool/test_canonical_requests.py

How to resolve conflicts:

git fetch origin
git checkout --track origin/cherry-pick-stable-25-3-1-260219-084812
# Resolve conflicts in files
git add .
git commit -m "Resolved merge conflicts"
git push

After resolving conflicts:

1. Fix the PR title (remove [CONFLICT] if conflicts are resolved)
2. Mark PR as ready for review

Git Cherry-Pick Log

=== Cherry-picking 2cf22b8 ===
Auto-merging ydb/core/blobstorage/vdisk/skeleton/blobstorage_skeletonfront.cpp
Auto-merging ydb/tests/functional/dstool/canondata/result.json
CONFLICT (content): Merge conflict in ydb/tests/functional/dstool/canondata/result.json
Auto-merging ydb/tests/functional/dstool/test_canonical_requests.py
CONFLICT (content): Merge conflict in ydb/tests/functional/dstool/test_canonical_requests.py

error: could not apply 2cf22b8ae96... Fix VERIFY caused by dstool group take-snapshot when VDisk is in NotReady or Error state (#34447)
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".

---

PR was created by cherry-pick workflow run

[ydbot]

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• Additional args: custom ya make arguments

[github-actions]

⚪ 2026-02-19 08:49:50 UTC Pre-commit check linux-x86_64-release-asan for dc60f87 has started.
⚪ 2026-02-19 08:49:54 UTC Artifacts will be uploaded here
⚪ 2026-02-19 08:53:29 UTC ya make is running...
🔴 2026-02-19 08:55:22 UTC Build failed, see the logs. Also see fail summary

[github-actions]

⚪ 2026-02-19 08:49:56 UTC Pre-commit check linux-x86_64-relwithdebinfo for dc60f87 has started.
⚪ 2026-02-19 08:50:12 UTC Artifacts will be uploaded here
⚪ 2026-02-19 08:53:46 UTC ya make is running...
🔴 2026-02-19 08:55:29 UTC Build failed, see the logs. Also see fail summary

[github-actions]

🟢 2026-02-20 14:49:08 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2026-02-20 10:54:45 UTC Pre-commit check linux-x86_64-release-asan for 194f451 has started.
⚪ 2026-02-20 10:54:50 UTC Artifacts will be uploaded here
⚪ 2026-02-20 10:58:27 UTC ya make is running...
🟡 2026-02-20 12:58:50 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
16060	15555	0	202	283	20

🟢 2026-02-20 12:58:56 UTC Build successful.
🟢 2026-02-20 12:59:25 UTC ydbd size 3.8 GiB changed* by +304 Bytes, which is < 100.0 KiB vs stable-25-3-1: OK

ydbd size dash	stable-25-3-1: fb0fd63	merge: 194f451	diff	diff %
ydbd size	4 045 892 376 Bytes	4 045 892 680 Bytes	+304 Bytes	+0.000%
ydbd stripped size	1 510 544 704 Bytes	1 510 544 832 Bytes	+128 Bytes	+0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2026-02-20 10:55:06 UTC Pre-commit check linux-x86_64-relwithdebinfo for 194f451 has started.
⚪ 2026-02-20 10:56:54 UTC Artifacts will be uploaded here
⚪ 2026-02-20 11:01:16 UTC ya make is running...
🟡 2026-02-20 12:34:21 UTC Some tests failed, follow the links below. Going to retry failed tests...

Details

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
39100	36400	0	6	2671	23

⚪ 2026-02-20 12:34:31 UTC ya make is running... (failed tests rerun, try 2)
🟡 2026-02-20 12:55:12 UTC Some tests failed, follow the links below. Going to retry failed tests...

Details

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
894 (only retried tests)	869	0	3	1	21

⚪ 2026-02-20 12:55:14 UTC ya make is running... (failed tests rerun, try 3)
🟢 2026-02-20 13:13:37 UTC Tests successful.

Ya make output | Test bloat | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
556 (only retried tests)	536	0	0	1	19

🟢 2026-02-20 13:13:40 UTC Build successful.
🟢 2026-02-20 13:14:11 UTC ydbd size 2.3 GiB changed* by +208 Bytes, which is < 100.0 KiB vs stable-25-3-1: OK

ydbd size dash	stable-25-3-1: fb0fd63	merge: 194f451	diff	diff %
ydbd size	2 429 268 888 Bytes	2 429 269 096 Bytes	+208 Bytes	+0.000%
ydbd stripped size	520 633 064 Bytes	520 633 128 Bytes	+64 Bytes	+0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}