[B! filesystem] Nyohoã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

Nyoho id:Nyoho

filesystemã«é–¢ã™ã‚‹Nyohoã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (38)

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Docker for Macã®æ–°ã—ã„ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ VirtioFSã‚’è©¦ã—ã¦ã¿ãŸ
2022/03/24è¿½è¨˜ ã“ã®è¨˜äº‹å†…ã§ã¯Intelãƒãƒƒãƒ—ã§VirtioFSã‚’ä½¿ã£ãŸãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒä½Žã„çµæžœã¨ãªã£ã¦ã„ã¾ã™ãŒã€ã“ã®å•é¡Œã¯Docker for Macã«èµ·å› ã™ã‚‹ã‚‚ã®ã§ã¯ãªãmacOSå´ã«ãƒœãƒˆãƒ«ãƒãƒƒã‚¯ãŒã‚ã‚Šã€ macOS 12.3ã§è§£æ±ºã•ã‚ŒãŸã¨å ±å‘Šã•ã‚Œã¦ã„ã¾ã™ã€‚ https://github.com/docker/roadmap/issues/7#issuecomment-1028943179 èƒŒæ™¯ Docker for Macã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚¢ã‚¯ã‚»ã‚¹ã¯é…ãã€æœ¬å®¶ã®GitHubã«ã‚‚issueãŒã‚ã‚Šé•·å¹´è°è«–ãŒé‡ãã‚‰ã‚Œã¦ãã¦ã„ã¾ã™ã€‚ https://github.com/docker/for-mac/issues/77 https://github.com/docker/roadmap/issues/7 ã“ã‚Œã‚‰ã®çµŒç·¯ã¯ä»¥å‰Qiitaã«ã¾ã¨ã‚ãŸã®ã§èˆˆå‘³ãŒã‚ã‚Œã°å‚ç…§ãã ã•ã„ã€‚ https://
Nyoho 2022/03/17
mutagenã™ã‚“ã”ã„é€Ÿã„

docker

filesystem
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Creating, managing and using Apple File System snapshots for startup drive backups
Nyoho 2022/02/18
mount_apfs -s snapshot_name backed_up_volume_name mountpoint_name

filesystem
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ãœã‚“ãœã‚“ã‚ã‹ã‚‰ãªã„ä¿ºé”ã¯é›°å›²æ°—ã§btrfsä½¿ã£ã¦ã„ã‚‹
é›°å›²æ°—ã§ ext2/3/4 ã‚’ä½¿ã£ã¦ããŸäººãŒã€é›°å›²æ°—ã§ btrfs ã‚’ä½¿ã†ãŸã‚ã®ãƒ¡ãƒ¢ã€‚ RAID ã¯æœ¬ç¨¿ã§ã¯æ·±ãè§¦ã‚Œãªã„ã€‚ RAID ã¯é›°å›²æ°—ã§ä½¿ãˆã‚‹ã‚‚ã®ã§ã¯ãªã„ã€‚ ç™ºéŸ³ ä½•ã‹ã¨è©±ã«ã‚ãŒã‚‹ã©ã†ç™ºéŸ³ã™ã‚‹ã‹å•é¡Œã«ã¤ã„ã¦ã¯ã€ä¸‹è¨˜ãŒç”ãˆã§è‰¯ã„ã¨æ€ã‚ã‚Œã‚‹ã€‚ Itâ€™s called Butter FS or B-tree FS, but all the cool kids say Butter FS â€” Valerie Henson, â€œChunkfs: Fast file system check and repairâ€, 31 Jan 2008. ã‚¯ãƒ¼ãƒ«ã‚ãƒƒã‚ºãªã‚‰ ãƒã‚¿ãƒ¼ãƒ»ã‚¨ãƒ•ãƒ»ã‚¨ã‚¹ [bÊŒÌtÉ™(r) - eÌf - es] ã¨ç™ºéŸ³ã™ã‚Œã°è‰¯ã„ã€‚ "Butter FS" ç™ºéŸ³éƒ¨ã‚’æŠœãå‡ºã—ãŸã‚‚ã® ã¨ã«ã‹ãã•ã•ã£ã¨ä½¿ã†ã«ã¯ ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ä»®æƒ³ãƒ‰ãƒ©ã‚¤ãƒ–ã¨ã—ã¦ä½¿ãˆã°ã²ã¨ã¾ãšè©¦ç”¨ã™ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚ 128MBã®
Nyoho 2022/02/18
filesystem
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ã€Mac Infoã€‘ ç†è§£ã—ã¦ã‚‹ï¼ŸMacã®ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã€ŒAPFSã€ã®ãƒ¡ãƒªãƒƒãƒˆ/ãƒ‡ãƒ¡ãƒªãƒƒãƒˆ
Nyoho 2021/12/03
â€œã“ã‚Œã‚’å›žé¿ã™ã‚‹ã«ã¯ã€ã‚µã‚¤ãƒ‰ãƒãƒ¼ã«ã€Œã™ã¹ã¦ã®ãƒ‡ãƒã‚¤ã‚¹ã€ã‚’è¡¨ç¤ºã—ã¦ã‹ã‚‰SSDãªã©ã®è£…ç½®ã‚’é¸ã³ã€ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã‚’[GUIDãƒ‘ãƒ¼ãƒ†ã‚£ã‚·ãƒ§ãƒ³ãƒžãƒƒãƒ—]ã«å¤‰æ›ã™ã‚‹â€

filesystem
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https://www.cs.hmc.edu/~rhodes/cs134/readings/The%20Zettabyte%20File%20System.pdf
Nyoho 2021/09/07
ZFSã®è¨è¨ˆè€…ãŒä½•ã‚’è§£æ±ºã—ãŸã‹ã£ãŸã®ã‹ãŒæ›¸ã‹ã‚ŒãŸè«–æ–‡ The Zettabyte File System Jeff Bonwick, Matt Ahrens, Val Henson, Mark Maybee, Mark Shellenbaum

filesystem
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Catalinaã§ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ãŒã“ã†å¤‰ã‚ã‚‹ - æ–°ãƒ»OS X ãƒãƒƒã‚ãƒ³ã‚°!(242)
åŸºèª¿è¬›æ¼”ã§ã¯ç´¹ä»‹ã•ã‚Œãªã„æ©Ÿèƒ½ã®ä¸ã«ã‚‚"ç™ºè¦‹"ãŒã‚ã‚‹WWDCã€‚ã‚‚ã¡ã‚ã‚“é–‹ç™ºè€…ã¨ã‚³ãƒ³ã‚·ãƒ¥ãƒ¼ãƒžãƒ¦ãƒ¼ã‚¶ã§ã¯ç›®ç·šãŒç•°ãªã‚‹ã‚‚ã®ã®ã€ã“ã¨ã€Œãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã€ã®ä»•æ§˜å¤‰æ›´ã¨ãªã‚Œã°è©±ã¯åˆ¥ã€ã™ã¹ã¦ã®Macãƒ¦ãƒ¼ã‚¶ã«é–¢ã‚ã‚‹é‡å¤§æ¡ˆä»¶ã ã€‚ä»Šå›žã¯ã€æ¬¡æœŸmacOSã€ŒCatalinaã€ã«ãŠã‘ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã®å¤‰æ›´ç‚¹ã«ã¤ã„ã¦è§£èª¬ã—ã¦ã¿ã‚ˆã†ã€‚ å¤§ããå¤‰ã‚ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ macOSã®ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªæ§‹é€ ã¯ã€å‰èº«ã¨ãªã‚‹NEXTSTEP/OPENSTEPã®æ™‚ä»£ã‹ã‚‰é€£ç¶¿ã¨ç¶šãã‚‚ã®ã§ã€ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã«ä¸Žãˆã‚‰ã‚ŒãŸå½¹å‰²ã«å¤šå°‘ã®å¤‰åŒ–ã¯ã‚ã£ãŸã‚‚ã®ã®ã€ã€Œç®¡ç†è€…æ¨©é™ã‚’æŒã¤ãƒ¦ãƒ¼ã‚¶(ã‚¹ãƒ¼ãƒ‘ãƒ¼ãƒ¦ãƒ¼ã‚¶)ã®ã¿ãŒæ›¸ãæ›ãˆã‚’è¨±ã•ã‚Œã‚‹ã€ã¨ã„ã†åŽŸå‰‡ã¯ä¸€è²«ã—ã¦ã„ãŸã€‚ ã—ã‹ã—ã€El Capitanã®ã¨ãã€ŒSystem Integrity Protection(SIP)ã€ãŒå°Žå…¥ã•ã‚Œã€/usrãªã©ç‰¹å®šé ˜åŸŸã®æ›¸ãæ›¿ãˆãŒã‚¹ãƒ¼ãƒ‘ãƒ¼ãƒ¦ãƒ¼ã‚¶ã§ã™ã‚‰æ›¸ãæ›¿ãˆãŒåŽŸå‰‡ä¸å¯èƒ½ã«ãªã£ãŸã€‚ã“ã‚Œã¯ã‚»ã‚
Nyoho 2019/06/19
Firmlinks

macOS

filesystem
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OpenZFSã€Appleã®å…¬è¨¼ã‚’å–å¾—ã—ãŸã€ŒOpenZFS on OS X 1.9.0 Stableã€ã‚’ãƒªãƒªãƒ¼ã‚¹ã€‚
OpenZFSãŒAppleã®å…¬è¨¼ã‚’å–å¾—ã—ãŸã€ŒOpenZFS on OS X 1.9.0 Stableã€ã‚’ãƒªãƒªãƒ¼ã‚¹ã—ã¦ã„ã¾ã™ã€‚è©³ç´°ã¯ä»¥ä¸‹ã‹ã‚‰ã€‚ OpenZFSãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã¯ç¾åœ°æ™‚é–“2019å¹´05æœˆ28æ—¥ã€Appleã®å…¬è¨¼ã‚µãƒ¼ãƒ“ã‚¹(Software Notarized)ã‚’é€šéŽã•ã›ãŸå®‰å®šç‰ˆã®ã€ŒOpenZFS on OS X 1.9.0ã€ã‚’ãƒªãƒªãƒ¼ã‚¹ã—ãŸã¨ç™ºè¡¨ã—ã¦ã„ã¾ã™ã€‚ New stable release! #OpenZFS on OS X 1.9.0 https://t.co/Csba4rpnFh #Apple #macOS #o3x @OpenZFS We happened to be inline with @zfsonlinux so why not have a release! * TRIM/unmap * Multihost failover * Sequential scrub
Nyoho 2019/05/29
filesystem
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USBãƒ¡ãƒ¢ãƒªã«ã¯ exFAT ã¨ APFS ã®ã©ã¡ã‚‰ãŒæ€§èƒ½çš„ã«è‰¯ã„ã®ã‹ï¼Ÿ - Qiita
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Nyoho 2019/01/29
filesystem
ãƒªãƒ³ã‚¯
Linux 5.0 File-System Benchmarks: Btrfs vs. EXT4 vs. F2FS vs. XFS - Phoronix
Linux 5.0 File-System Benchmarks: Btrfs vs. EXT4 vs. F2FS vs. XFS Written by Michael Larabel in Storage on 7 January 2019 at 03:19 PM EST. Page 1 of 4. 61 Comments. With all of the major file-systems seeing clean-up work during the Linux 4.21 merge window (now known as Linux 5.0 and particularly with F2FS seeing fixes as a result of it being picked up by Google for support on Pixel devices, I was
Nyoho 2019/01/16
Linux

filesystem
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ã“ã®è¨˜äº‹ã¯ KLab Engineer Advent Calendar 2018 ã®6æ—¥ç›®ã®ã‚¨ãƒ³ãƒˆãƒªã§ã™ã€‚ æœ€è¿‘ã®macOSã§ã¯æ–°ã—ã„ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ãŒæŽ¡ç”¨ã•ã‚Œã¦ã„ã¦ã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚³ãƒ”ãƒ¼ãŒä¸€çž¬ã§ã§ãã¾ã™ã‚ˆã€æ€§èƒ½æ”¹å–„ã‚„ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã®ç©ºãå®¹é‡ã‚’å¢—ã‚„ã™ã®ã«å½¹ç«‹ã¤ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ã‚ˆã€ã¨ã„ã†è©±ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ æœ€è¿‘ã®macOSã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ï¼šAPFS ã¾ãšæœ€è¿‘ã®Macã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã«ã¤ã„ã¦ç´¹ä»‹ã—ã¾ã™ã€‚2017å¹´9æœˆãƒªãƒªãƒ¼ã‚¹ã®macOS 10.13 (High Sierra) ä»¥é™ã€macOSã§ã¯æ¨™æº–ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã¨ã—ã¦APFS (Apple File System) ãŒæŽ¡ç”¨ã•ã‚Œã¦ã„ã¾ã™ã€‚ã“ã‚Œã¯ã‚³ãƒ”ãƒ¼ã‚ªãƒ³ãƒ©ã‚¤ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã¨ã„ã†ã‚¸ãƒ£ãƒ³ãƒ«ã«å±žã™ã‚‹ã‚‚ã®ã§ã€åŒã˜ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ä½œæˆã™ã‚‹éš›ã«å®Ÿä½“ã‚’å…±æœ‰ã—ã¦ã€ã©ã¡ã‚‰ã‹ä¸€æ–¹ãŒæ›´æ–°ã•ã‚ŒãŸæ™‚ã«åˆã‚ã¦ãƒ•ã‚¡ã‚¤ãƒ«ã‚³ãƒ”ãƒ¼ã‚’è¡Œã†ã‚ˆã†ãªä»•çµ„ã¿ã‚’æŒã¤ã€ãƒ¢ãƒ€ãƒ³ãªãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã§ã™ã€‚
Nyoho 2018/12/06
â€œUnityãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã ã¨Switch Platformã‚’é¿ã‘ã‚‹ãŸã‚åŒä¸€ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã®ã‚³ãƒ”ãƒ¼ã‚’è¤‡æ•°æŒã¤ã‚ˆã†ãªã“ã¨ã‚’ã•ã‚Œã¦ã„ã‚‹æ–¹ã‚‚å¤šã„ã‹ã¨æ€ã„ã¾ã™ã€‚â€ ãŠãŠç¢ºã‹ã«!

macOS

filesystem
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ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã‚µã‚¤ã‚ºã®æ‹¡å¼µæ™‚ã«ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚¢ã‚¯ã‚»ã‚¹ãŒã‚¹ãƒãƒ¼ãƒ€ã‚¦ãƒ³ã™ã‚‹å•é¡Œã®è§£æ±º - Cybozu Inside Out | ã‚µã‚¤ãƒœã‚¦ã‚ºã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ãƒ–ãƒã‚°
ã¯ã˜ã‚ã« ã“ã‚“ã«ã¡ã¯ã€æŠ€è¡“é¡§å•ã®satã§ã™ã€‚ ã‚µã‚¤ãƒœã‚¦ã‚ºã§ã¯ã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã‚µã‚¤ã‚ºæ‹¡å¼µæ™‚ã«ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚¢ã‚¯ã‚»ã‚¹ãŒã‚¹ãƒãƒ¼ãƒ€ã‚¦ãƒ³ã™ã‚‹ã¨ã„ã†å•é¡Œã«é•·å¹´æ‚©ã¾ã•ã‚Œã¦ãã¾ã—ãŸã€‚æœ¬è¨˜äº‹ã§ã¯é‹ç”¨æœ¬éƒ¨ã®è—¤ç”°ã¨æ·±è°·ãŒã“ã®å•é¡Œã‚’è§£æ±ºã—ãŸæµã‚Œã«ã¤ã„ã¦å ±å‘Šã„ãŸã—ã¾ã™ã€‚å•é¡Œã‚’è§£æ±ºã™ã‚‹ãŸã‚ã«2äººã¯Linuxã‚«ãƒ¼ãƒãƒ«ã‚’ä¿®æ£ã—ã¾ã—ãŸã€‚ä¿®æ£ã¯ç¤¾å†…ã«é–‰ã˜ãŸã‚‚ã®ã§ã¯ãªãã€åŸ·ç†å½“æ™‚ã®æœ€æ–° Linuxã‚«ãƒ¼ãƒãƒ«ã§ã‚ã‚‹v4.17ã«ãƒžãƒ¼ã‚¸ã•ã‚Œã¦ã„ã¾ã™ã€‚ å•é¡Œ ä»¥ä¸‹ã®æ“ä½œã®å¾Œã«ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã¸ã®ã‚¢ã‚¯ã‚»ã‚¹ãŒä¸€æ™‚çš„ã«ã‚¹ãƒãƒ¼ãƒ€ã‚¦ãƒ³ã™ã‚‹ ãƒ–ãƒãƒƒã‚¯ãƒ‡ãƒã‚¤ã‚¹ã®ã‚µã‚¤ã‚ºã‚’æ‹¡å¼µã™ã‚‹ ä¸Šè¨˜ãƒ‡ãƒã‚¤ã‚¹ä¸Šã«ã‚ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã®ã‚µã‚¤ã‚ºã‚’æ‹¡å¼µã™ã‚‹ åŽŸå› linuxã‚«ãƒ¼ãƒãƒ«ã¯ãƒ–ãƒãƒƒã‚¯ãƒ‡ãƒã‚¤ã‚¹ã®ã‚µã‚¤ã‚ºå¤‰æ›´(ç¸®å°ãŠã‚ˆã³æ‹¡å¼µ)æ™‚ã«ã€å½“è©²ãƒ‡ãƒã‚¤ã‚¹ä¸Šã«ã‚ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã®ãƒšãƒ¼ã‚¸ã‚ãƒ£ãƒƒã‚·ãƒ¥(å¾Œè¿°)ã‚’ç„¡åŠ¹åŒ–ã™ã‚‹*1 è§£æ±ºæ–¹æ³• ãƒ–ãƒãƒƒã‚¯ãƒ‡ãƒã‚¤ã‚¹ã®ã‚µã‚¤ã‚ºæ‹¡å¼µæ™‚ã«ã¯ãƒšãƒ¼ã‚¸ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚’ç„¡åŠ¹
Nyoho 2018/06/30
ç´ æ™´ã‚‰ã—ã„ã€‚"4è¡Œã®è¿½åŠ ã€2è¡Œã®å‰Šé™¤ã«éŽãŽã¾ã›ã‚“ãŒã€ã“ã“ã«ãŸã©ã‚Šç€ãã¾ã§ã«ä¸Šè¨˜ã®ã‚ˆã†ãªæ§˜ã€…ãªè©¦è¡ŒéŒ¯èª¤ãŒã‚ã‚Šã¾ã—ãŸã€‚ã“ã‚Œã¯ã‚½ãƒ¼ã‚¹ä¿®æ£ã®æ‰‹é–“ã¯å¤‰æ›´ã®è¡Œæ•°ã«æ¯”ä¾‹ã—ãªã„ã¨ã„ã†ã„ã„ä¾‹"

Linux

filesystem
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Bcachefs Linux File-System Benchmarks vs. Btrfs, EXT4, F2FS, XFS - Phoronix
Bcachefs Linux File-System Benchmarks vs. Btrfs, EXT4, F2FS, XFS Written by Michael Larabel in Storage on 30 May 2018 at 04:00 PM EDT. Page 1 of 3. 38 Comments. With Bcachefs on its trek towards the mainline Linux kernel, this week I conducted some benchmarks using the very latest Bcachefs file-system code and compared its performance to the mainline Btrfs, EXT4, F2FS, and XFS file-system competit
Nyoho 2018/06/06
filesystem

benchmark
ãƒªãƒ³ã‚¯
GitHub - satoru-takeuchi/btrfs-thin-book: Btrfsã®è–„ã„æœ¬
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Nyoho 2018/05/10
btrfs

filesystem

book
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ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã‚½ãƒ ãƒªã‚¨ã«ãªã‚‹è©± - Gentoo metalog
åˆ©ããƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ãŒã§ãã‚‹ã®ã‹ã¨ã„ã†è©±ã‚’è¦‹ã‹ã‘ãŸã®ã§ã€ã§ããã†ã ãªã¨æ€ã£ã¦æ›¸ã„ãŸã‚„ã¤ã§ã™ã€‚ ã€Œã“ã“ã«ä½•ã‹ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ãŒã‚ã‚Šã¾ã™ã€‚ãƒ•ã‚¡ã‚¤ãƒ«æ“ä½œã‚’è¡Œã£ã¦ã€ã©ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã‹å½“ã¦ã¦ãã ã•ã„ã€‚ãªãŠãƒ‡ã‚£ã‚¹ã‚¯ã‚¤ãƒ¡ãƒ¼ã‚¸ã‚’è¦‹ã‚‹ã“ã¨ã¯ã§ãã¾ã›ã‚“ã€‚ã€ã¨ã„ã†å•é¡Œã‚’è§£ãæ–¹æ³•ã«ã¤ã„ã¦è€ƒãˆã¾ã™ã€‚ ã±ã£ã¨æ€ã„ã¤ãæ–¹æ³•ã¯ã“ã‚Œã§ã—ã‚‡ã†ã‹ã‚‰ã‚„ã£ã¦ã„ãã¾ã™ ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã®ãªã‹ã«ãƒ•ã‚¡ã‚¤ãƒ«ä½œã£ã¦ã„ã£ã¦inodeç•ªå·è¦‹ã‚Œã°btrfsã¨ext4ã¨XFSã¯åŒºåˆ¥ã§ãã‚‹æ°—ãŒã—ã¾ã™ãâ€” ã‚·ãƒ£ãƒ«ãƒãƒƒãƒˆãƒ»ã³ãƒ¼ã‚‹å°½ãå¤ªéƒŽã®æ†‚é¬± (@naota344) 2016å¹´6æœˆ15æ—¥ ä»¥ä¸‹ã®ã‚¹ã‚¯ãƒªãƒ—ãƒˆã‚’èµ°ã‚‰ã›ã¾ã™ã€‚512GBã§å„FSã®ã‚¤ãƒ¡ãƒ¼ã‚¸ä½œã£ã¦ã€ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã‚’ã„ãã¤ã‹æŽ˜ã£ã¦inodeç•ªå·ã‚’è¡¨ç¤ºã•ã›ã‚‹ã ã‘ã§ã™ã€‚ #!/bin/sh FS="btrfs ext4 xfs" DIR=/mnt/test for f in $FS; do echo ${
Nyoho 2018/02/23
filesystem
ãƒªãƒ³ã‚¯
pgsql: Increase distance between flush requests during bulk file copies
Increase distance between flush requests during bulk file copies. copy_file() reads and writes data 64KB at a time (with default BLCKSZ), and historically has issued a pg_flush_data request after each write. This turns out to interact really badly with macOS's new APFS file system: a large file copy takes over 100X longer than it ought to on APFS, as reported by Brent Dearth. While that's arguably
Nyoho 2017/10/11
PostgreSQL

filesystem
ãƒªãƒ³ã‚¯
â Btrfs has been deprecated in RHEL | Hacker News
People are making a bigger deal of this than it is. Since I left Red Hat in 2012 there hasn't been another engineer to pick up the work, and it is _a lot_ of work.For RHEL you are stuck on one kernel for an entire release. Every fix has to be backported from upstream, and the further from upstream you get the harder it is to do that work. Btrfs has to be rebased _every_ release. If moves too fast
Nyoho 2017/08/03
filesystem
ãƒªãƒ³ã‚¯
APFS filesystem format | Cugu's blog
22 Apr 2017 APFS filesystem formatI started to reverse engineer APFS and want to share what I found out so far. You can send me feedback and ideas on this post via Twitter. Notice: I created a test image with macOS Sierra 10.12.3 (16D32). All results are guesses and the reverse engineering is work in progress. Also newer versions of APFS might change structures. The information below is neither co
Nyoho 2017/04/23
"APFS filesystem format"

filesystem
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GitHub - philipl/pifs: Ï€fs - the data-free filesystem!
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Nyoho 2017/04/01
Ï€fs

filesystem
ãƒªãƒ³ã‚¯
APFSã§å†ç‡ƒã—ãŸNFDå•é¡Œ - Qiita
iOS 10.3 ã§APFSãŒæœ¬ç•ªæŠ•å…¥ã•ã‚Œã¾ã—ãŸã€‚ãã‚Œã§iPhoneã‚„iPadãŒæ–‡éŽ®åŒ–ã™ã‚‹ãªã©ã®æ·±åˆ»ãªå•é¡Œã¯ã¿ã‚‰ã‚Œãªã‹ã£ãŸã‚‚ã®ã®ã€ã‚„ã¯ã‚Šç„¡å•é¡Œã¨ã¯ã„ã‹ãªã‹ã£ãŸã‚ˆã†ã§ã€‚ iOS10.3ã§ä¸å…·åˆã®å‡ºã‚‹ã‚¢ãƒ—ãƒªã¯ã€APFSé–¢é€£ã®å½±éŸ¿ã‹ã‚‚ï¼ˆUnicode Normalizationã®æŒ¯ã‚‹èˆžã„ãŒå¤‰ã‚ã£ãŸã‚‰ã—ã„ï¼‰ã€‚GoodReaderã¨Dropboxã®åŒæœŸã§ã‚¨ãƒ©ãƒ¼ãŒå‡ºã‚‹ã‚ˆã†ã«ãªã£ãŸã®ã ãŒã€ãƒ•ã‚¡ã‚¤ãƒ«åã«æ¿ç‚¹ã‚’å«ã‚€ãƒ•ã‚¡ã‚¤ãƒ«ã‚’é™¤ã„ãŸã‚‰åŒæœŸã§ãã‚‹ã‚ˆã†ã«ã€‚ â€” å±±è·¯é”ä¹Ÿ (@Tats_y) March 29, 2017 åŽŸå› ã‚’èª¿ã¹ã¦ã¿ã¾ã—ãŸã€‚ # !/usr/bin/env perl use strict; use warnings; use feature ':all'; use Encode; use Unicode::Normalize; use utf8; binmode STDOUT, ':utf8';
Nyoho 2017/03/29
filesystem

Unicode
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macOSä¸Šã®APFSã¯Unicode Normalizationã‚’è¡Œã†ã®ã‹? - ãªã‚‹ã›ã«ã£ã
iOS 10.3ãŒãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¾ã—ãŸãŒã€APFSã¸ã®ç§»è¡ŒãŒå«ã¾ã‚Œã¦ã„ã¦è©±é¡Œã§ã™ã€‚ç‰¹ã«æ–‡å—ã‚³ãƒ¼ãƒ‰ç•Œéšˆã§ã¯HFS+ã§æè¼‰ã•ã‚Œã¦ã„ãŸæš—é»™ã®Unicode NormalizationãŒãªããªã£ã¦ã„ã‚‹ç‚¹ãŒæŒ‡æ‘˜ã•ã‚Œã¦ã„ã¾ã™1ã€‚ ã§ã¯macOSã§ã¯ã©ã†ãªã®ã§ã—ã‚‡ã†ã‹ã€‚Sierraãªã‚‰ã°ã™ã§ã«APFSã‚’æ‰±ã†ã“ã¨ãŒå‡ºæ¥ã‚‹ã®ã§è©¦ã—ã¦ã¿ã¾ã—ã‚‡ã†ã€‚ % hdiutil create -fs APFS -size 1GB foo.sparseimage WARNING: You are using a pre-release version of the Apple File System called APFS which is meant for evaluation and development purposes only. Files stored on this volume may not be ac
Nyoho 2017/03/29
macOS

filesystem
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