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

kosaki id:kosaki

filesystemã«é–¢ã™ã‚‹kosakiã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (6)

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UnionMountã¨Union-type Filesystem(2) - O'Reilly Japan Community Blog
AUFS/UnionFSãŒunionå†…ã®ãƒ¡ãƒ³ãƒã‚’ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã¨ã™ã‚‹ã®ã«å¯¾ã—ã€UnionMountã§ã®ãƒ¡ãƒ³ãƒã¯ãƒ–ãƒãƒƒã‚¯ãƒ‡ãƒã‚¤ã‚¹ï¼ˆã™ãªã‚ã¡ãƒžã‚¦ãƒ³ãƒˆã¨ã—ã¦unionæ©Ÿèƒ½å®Ÿè£…)ã§ã™ã€‚ã‚‚ã£ã¨ã‚‚å¤§ããªé•ã„ã¯ãã®å®Ÿè£…æ–¹é‡ã«ã‚ã‚Šã€UnionMountã¯ã‚ˆã‚Šä¸Šä½ã«ä½ç½®ã™ã‚‹VFSå†…ã§unionæ©Ÿèƒ½ã‚’å®Ÿç¾ã—ã‚ˆã†ã¨ã—ã¦ã„ã¾ã™( å›³6 ï¼‰ã€‚ ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã¨ã—ã¦ã®unionå®Ÿè£…ã¨æ¯”è¼ƒã™ã‚‹ã¨ã€VFSå†…ã§ãƒ¡ãƒ³ãƒå†…ã‹ã‚‰å‡¦ç†å¯¾è±¡ã‚’é¸æŠžæ±ºå®šã™ã‚‹ç‚¹ãŒå¤§ããç•°ãªã‚Šã¾ã™ã€‚ã“ã®ãŸã‚ã€ vfs_mkdir() ãªã©VFSãƒ˜ãƒ«ãƒ‘é–¢æ•°ã‚’å†åº¦ã‚³ãƒ¼ãƒ«ã™ã‚‹å¿…è¦ãŒãªããªã‚Šã¾ã™ã€‚ fallthruã¨ readdir(3) UnionMountã§ã¯ readdir(3) ã®å®Ÿè£…ã«å¤§å¤‰è‹¦åŠ´ã—ã¦ã„ã¾ã—ãŸãŒã€å¹³æˆ21å¹´æ˜¥ã«æŠ•ç¨¿ã•ã‚ŒãŸãƒ‘ãƒƒãƒã‚·ãƒªãƒ¼ã‚ºã§ã¯fallthruã¨ã„ã†ãƒ•ã‚¡ã‚¤ãƒ«ã‚¿ã‚¤ãƒ—ã‚’å°Žå…¥ã—ã€æ–°ãŸãªå®Ÿè£…ãŒè©¦ã¿ã‚‰ã‚Œã¾ã—ãŸã€‚ UnionMountã«é™ã‚‰ãšãƒ•
kosaki 2010/03/07
linux

kernel

filesystem
ãƒªãƒ³ã‚¯
UnionMountã¨Union-type Filesystem(1) - O'Reilly Japan Community Blog
ã¯ã˜ã‚ã« å¹³æˆ21å¹´æ˜¥ã®Linux Storage & Filesystems Workshopã§ã€Linuxã‚«ãƒ¼ãƒãƒ«ã«UnionMountã¨ã„ã†æ©Ÿèƒ½ã‚’å®Ÿè£…ã™ã‚‹ã“ã¨ã«ã¤ã„ã¦è©±ã—åˆã‚ã‚Œã¾ã—ãŸã€‚ UnionMountã¨ã¯ã€ã‹ã¤ã¦ã®SunOSã«å®Ÿè£…ã•ã‚Œã¦ã„ãŸTranslucentï¼ˆTransparentï¼‰Filesystemã‚„BSDã®union mountã«ç›¸å½“ã™ã‚‹æ©Ÿèƒ½ã§ã€ã™ã§ã«ãƒ‡ã‚£ã‚¹ã‚¯ã‚’ãƒžã‚¦ãƒ³ãƒˆã—ã¦ã„ã‚‹ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªï¼ˆãƒžã‚¦ãƒ³ãƒˆãƒã‚¤ãƒ³ãƒˆï¼‰ã«åˆ¥ã®ãƒ‡ã‚£ã‚¹ã‚¯ã‚’é‡ãã¦ãƒžã‚¦ãƒ³ãƒˆã—ã€1ã¤ã®ãƒžã‚¦ãƒ³ãƒˆãƒã‚¤ãƒ³ãƒˆã‹ã‚‰2å°ã®ãƒ‡ã‚£ã‚¹ã‚¯ã‚’åŒæ™‚ã«ä½¿ç”¨å¯èƒ½ã«ã™ã‚‹ã‚‚ã®ã§ã™ã€‚ä¾‹ãˆã°LiveCDï¼ˆHDDã¸ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã›ãšã«CD/DVD/Flashã®ã¿ã§Linuxã‚’èµ·å‹•ã—ã€ä½¿ç”¨å¯èƒ½ã«ã™ã‚‹ç’°å¢ƒï¼‰ãªã©ã§ã¯ã“ã®æ©Ÿèƒ½ã‚’ç©æ¥µçš„ã«åˆ©ç”¨ã—ã¦ã„ã¾ã™ã€‚ ã“ã®è¨˜äº‹ã§ã¯Linuxã‚«ãƒ¼ãƒãƒ«ã«ã“ã®æ©Ÿèƒ½ã‚’å®Ÿè£…ã™ã‚‹ã“ã‚Œã¾ã§ã®è©¦ã¿ã¨ã€å‰è¿°ã®è©±ã—åˆã„ã®çµæžœã¨ã—ã¦Lin
kosaki 2010/03/07
linux

filesystem

kernel
ãƒªãƒ³ã‚¯
IBM Developer
IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant techno logies such as generative AI, data science, AI, and open source.
kosaki 2008/12/15
linux

filesystem
ãƒªãƒ³ã‚¯
Linux å‚™å¿˜éŒ² ï¼š Ext3 ã®ã‚¸ãƒ£ãƒ¼ãƒŠãƒ«ãƒ•ã‚¡ã‚¤ãƒ«ã®å†ä½œæˆã®æ–¹æ³•
1. ã¾ãšå§‹ã‚ã« Ext3 ä¸Šã§ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã®ç ´æçŠ¶æ³ã‚’èª¿æŸ»ã™ã‚‹ umount /dev/hda1 e2fsck -fn /dev/hda1 æ£å¸¸æ™‚ Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information /dev/hda1: 150/4308992 files (10.7% non-contiguous), 3486771/8614848 blocks Parallelizing fsck version 1.20-WIP (17-Jan-2001)
kosaki 2006/03/07
linux

ext3

ext2

filesystem

ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ
ãƒªãƒ³ã‚¯
[ThinkIT] ç¬¬2å›žï¼šãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã‚’æ¯”è¼ƒã—ã¦ã¿ã‚‹ (1/3)
ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã¨ã¯ã€ãƒãƒ¼ãƒ‰ãƒ‡ã‚£ã‚¹ã‚¯ãªã©ã®è¨˜æ†¶è£…ç½®ã«ãƒ‡ãƒ¼ã‚¿ã‚’è¨˜éŒ²ã™ã‚‹æ–¹å¼ã§ã™ã€‚ãã‚Œãžã‚Œã®OSã§ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã¯ç•°ãªã‚Šã€ãã‚Œãžã‚Œã«ç‰¹å¾´ãŒã‚ã‚Šã¾ã™ã€‚ã¾ãŸã€ä¿¡é ¼æ€§ã‚„ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã«ã‚‚å½±éŸ¿ã—ã¾ã™ã®ã§ã€ã“ã“ã§ã˜ã£ãã‚Šæ¯”è¼ƒã—ã¦ã¿ã¾ã—ã‚‡ã†ã€‚ Solarisã§ã®ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã¯ã€ŒUFSã€ï¼ˆUNIX File Systemï¼‰ã§ã™ã€‚ã“ã‚Œã¯4.3BSDã§å®Ÿè£…ã•ã‚ŒãŸãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã§ã‚ã‚Šã€ã“ã“ã§ã‚‚SolarisãŒBSDã®è¡€ã‚’å—ã‘ç¶™ã„ã§ã„ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã™ã€‚UFSã«ã¤ã„ã¦ã¯å¾Œè¿°ã®ã€ŒBSDã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã€ã§èª¬æ˜Žã—ã¾ã™ã®ã§ã€ã“ã“ã§ã¯Solaris 10ã§æŽ¡ç”¨ã•ã‚Œã‚‹ï¼ˆã‚¢ãƒƒãƒ—ãƒ‡ãƒ¼ãƒˆãƒªãƒªãƒ¼ã‚¹ã§å¯¾å¿œï¼‰æ–°ã—ã„ã€ŒSolaris ZFSã€ï¼ˆZetta Bytes File Systemï¼‰ã«ã¤ã„ã¦ç´¹ä»‹ã—ã¾ã—ã‚‡ã†ã€‚ ZFSã®ç‰¹å¾´ã¨ã—ã¦ã¾ãšæŒ™ã’ã‚‰ã‚Œã‚‹ã®ãŒã€128bitã‚¢ãƒ‰ãƒ¬ãƒƒã‚·ãƒ³ã‚°ã«ã‚ˆã‚Šäº‹å®Ÿä¸Šç„¡é™ã®ãƒ‡ã‚£ã‚¹ã‚¯å®¹é‡ã‚’æ‰±ãˆã‚‹ã“
kosaki 2006/02/20
filesystem

ext3

Linux

Solaris

UNIX

ã‚¸ãƒ£ãƒ¼ãƒŠãƒªãƒ³ã‚°

ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ

BSD
ãƒªãƒ³ã‚¯
Benchmarking Filesystems Part II LG #122
By Justin Piszcz Introduction After the last article was published, I have received more than a dozen requests for a second filesystem benchmark using the 2.6 kernel. Since that time, I have converted entirely to XFS for every Linux machine I use, so I may be a bit bias regarding the XFS filesystem. I tried to keep the hardware roughly the same. Instead of a Western Digital 250GB and Promise ATA/1
kosaki 2006/02/14
linux

Filesystem

FS

ext2

ext3

reiserfs

xfs

jfs
ãƒªãƒ³ã‚¯
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