14 Mar 2025, 02:17 UTC≈1,150 views3 reactionsread 8 August 2026 Linux and ext4 however does not (or at least, didn’t used to). It used to both clear the error state and mark the page clean, but valid. In all respects it looked like a page freshly read from disk. But, that data was not on disk (the write failed!), any attempt to flush it would do nothing (it’s not dirty). But, because it’s a clean page, it’s eligible for eviction, resulting in the weird situation that you could re…
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14 Mar 2025, 02:16 UTC≈1,220 views3 reactionsread 8 August 2026 https://despairlabs.com/blog/posts/2025-03-13-fsync-after-open-is-an-elaborate-no-op/ fsync 具體行為有多模糊
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11 Mar 2025, 05:45 UTC877 views5 reactionsread 8 August 2026 Forwarded from @r_linux
Understanding Unix filesystem timestamps
https://unixdigest.com/articles/understanding-unix-filesystem-timestamps.html
https://redd.it/1j8jhvt
@r_linux
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5 Mar 2025, 05:21 UTC937 viewsread 8 August 2026 Intel RST 在 linux 上用 mdadm 的文檔
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5 Mar 2025, 05:21 UTC885 views5 reactionsread 8 August 2026 rst-linux-paper.pdf
https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/rst-linux-paper.pdf
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22 Feb 2025, 08:31 UTC≈1,030 views4 reactionsread 8 August 2026 https://www.evanjones.ca/durability-nvme.html
關於 NVMe 設備上寫入的語義的一些解讀,引用到了 NVMe 標準,對不想細讀標準是一個不錯的總結
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9 Jan 2024, 03:16 UTC≈1,640 viewsread 8 August 2026 https://lore.kernel.org/linux-btrfs/20231217165359.604246-1-hch@lst.de/ host-aware SMR hdd 從 SCSI / ATA 標準中刪掉了(NVMe 標準中沒有加過),今後就只會有 host-managed 和 device-managed SMR 了。 Linux 內核會把現存少量的 host-aware SMR 設備當作 device-managed SMR (OS 看來是普通的 HDD )用
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6 Jan 2024, 09:00 UTC≈1,530 viewsread 8 August 2026 https://www.vidarholen.net/contents/blog/?p=479 tl;dr: dd works for reading and writing disks, but it has no "low level I/O" capabilities that make it more suited for this than any other shell utility. Like cat you should use it where it makes sense, e.g. to take advantage of its wide array of options, rather than try to ensure that all disk related commands begin and end with dd out of fear and superstition.
4 Jan 2024, 17:33 UTC≈1,380 viewsread 8 August 2026 https://lwn.net/Articles/888715/ Linux readahead
27 Dec 2023, 15:59 UTC≈1,220 viewsread 8 August 2026 https://despairlabs.com/blog/posts/2023-12-25-openzfs-data-corruption-bug/
8 Aug 2023, 15:55 UTC≈1,220 viewsread 8 August 2026 Photo
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8 Aug 2023, 15:28 UTC≈1,090 viewsread 8 August 2026 https://youtu.be/NtkKHhXf3V4 linux nvme and block layer
Showing the 12 most recent of 20 posts we hold for @fcnotes. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.