Fix VDisk compaction race (merge from main #21048)

[alexvru]

Changelog entry

Fix VDisk compaction race

Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

This patch fixes vdisk compaction race leading to possible data corruption when two compactions are started concurrently.

[github-actions]

🟢 2025-07-14 11:52:02 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-07-14 11:52:50 UTC Pre-commit check linux-x86_64-release-asan for 7433113 has started.
⚪ 2025-07-14 11:53:03 UTC Artifacts will be uploaded here
⚪ 2025-07-14 11:55:50 UTC ya make is running...
🟡 2025-07-14 13:12:19 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
12900	12814	0	20	29	37

⚪ 2025-07-14 13:13:40 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-07-14 13:36:43 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
125 (only retried tests)	70	0	4	17	34

⚪ 2025-07-14 13:36:54 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-07-14 13:59:39 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
82 (only retried tests)	40	0	3	6	33

🟢 2025-07-14 13:59:47 UTC Build successful.
🟢 2025-07-14 14:00:16 UTC ydbd size 3.7 GiB changed* by +2.7 KiB, which is < 100.0 KiB vs stable-25-1: OK

ydbd size dash	stable-25-1: c697d92	merge: 7433113	diff	diff %
ydbd size	4 013 973 968 Bytes	4 013 976 768 Bytes	+2.7 KiB	+0.000%
ydbd stripped size	1 400 781 624 Bytes	1 400 782 648 Bytes	+1.0 KiB	+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]

⚪ 2025-07-14 12:15:56 UTC Pre-commit check linux-x86_64-relwithdebinfo for 7433113 has started.
⚪ 2025-07-14 12:16:07 UTC Artifacts will be uploaded here
⚪ 2025-07-14 12:19:05 UTC ya make is running...
🟡 2025-07-14 13:34:25 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
20030	18749	0	8	1225	48

⚪ 2025-07-14 13:36:08 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-07-14 13:59:50 UTC Some tests failed, follow the links below. Going to retry failed tests...

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
103 (only retried tests)	60	0	3	0	40

⚪ 2025-07-14 13:59:59 UTC ya make is running... (failed tests rerun, try 3)
🔴 2025-07-14 14:29:57 UTC Some tests failed, follow the links below.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
74 (only retried tests)	32	0	3	0	39

🟢 2025-07-14 14:30:08 UTC Build successful.
🟢 2025-07-14 14:30:33 UTC ydbd size 2.1 GiB changed* by +1.5 KiB, which is < 100.0 KiB vs stable-25-1: OK

ydbd size dash	stable-25-1: c697d92	merge: 7433113	diff	diff %
ydbd size	2 305 728 456 Bytes	2 305 730 008 Bytes	+1.5 KiB	+0.000%
ydbd stripped size	484 702 048 Bytes	484 702 496 Bytes	+448 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}