Introduce DeepScrubbing mode to check integrity of blobs on VDisks (#20969)

[serbel324]

Changelog entry

Introduce DeepScrubbing - background process to check blobs integrity

Changelog category

• Not for changelog (changelog entry is not required)

[github-actions]

⚪ 2025-07-14 11:58:36 UTC Pre-commit check for 618ab63 has started.
⚪ 2025-07-14 12:02:05 UTC Build linux-x86_64-release-asan is running...
🔴 2025-07-14 12:09:32 UTC Build failed. see the build logs.
🔴 2025-07-14 12:09:34 UTC Tests run skipped.

[github-actions]

⚪ 2025-07-14 12:00:43 UTC Pre-commit check for 618ab63 has started.
⚪ 2025-07-14 12:03:53 UTC Build linux-x86_64-relwithdebinfo is running...
🔴 2025-07-14 12:10:32 UTC Build failed. see the build logs.
🔴 2025-07-14 12:10:33 UTC Tests run skipped.

[github-actions]

⚪ 2025-07-16 08:43:58 UTC Pre-commit check for 7cad824 has started.
⚪ 2025-07-16 08:47:05 UTC Build linux-x86_64-release-asan is running...
🟢 2025-07-16 09:34:42 UTC Build successful.
⚪ 2025-07-16 09:35:00 UTC Tests are running...
🔴 2025-07-16 11:49:19 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
11866	11750	0	46	29	41

🔴 2025-07-16 11:50:31 UTC ydbd size 5.6 GiB changed* by +3.3 MiB, which is >= 2.0 MiB vs stable-24-4: Alert

ydbd size dash	stable-24-4: 66c0dc4	merge: 7cad824	diff	diff %
ydbd size	6 029 100 272 Bytes	6 032 575 808 Bytes	+3.3 MiB	+0.058%
ydbd stripped size	1 508 662 688 Bytes	1 509 246 752 Bytes	+570.4 KiB	+0.039%

^{*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]

⚪ 2025-07-16 10:03:14 UTC Pre-commit check for 7cad824 has started.
⚪ 2025-07-16 10:06:35 UTC Build linux-x86_64-relwithdebinfo is running...
🟢 2025-07-16 11:10:37 UTC Build successful.
⚪ 2025-07-16 11:10:53 UTC Tests are running...
🔴 2025-07-16 13:15:42 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
40555	35279	0	22	5218	36

🔴 2025-07-16 13:16:40 UTC ydbd size 8.3 GiB changed* by +4.3 MiB, which is >= 2.0 MiB vs stable-24-4: Alert

ydbd size dash	stable-24-4: 66c0dc4	merge: 7cad824	diff	diff %
ydbd size	8 900 527 296 Bytes	8 905 076 432 Bytes	+4.3 MiB	+0.051%
ydbd stripped size	485 070 344 Bytes	485 239 016 Bytes	+164.7 KiB	+0.035%

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