Linux Certif

Toute la documentation sur la certification Linux LPI

debugfs

̾Á°

debugfs - ext2/ext3 ¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¥Ç¥Ð¥Ã¥¬

½ñ¼°

debugfs [ -Vwci ] [ -b blocksize ] [ -s superblock ] [ -f cmd_file ] [ -R request ] [ -d data_source_device ] [ device ]

ÀâÌÀ

debugfs ¤ÏÂÐÏÃŪ¤Ê¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Î¥Ç¥Ð¥Ã¥¬¤Ç¤¢¤ë¡£ ext2 ¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Î¾õÂÖ¤ÎÄ´ºº¡¦Êѹ¹¤ËÍøÍѤǤ­¤ë¡£ device ¤Ï¡¢ext2 ¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ò´Þ¤à¥Ç¥Ð¥¤¥¹¤ËÂбþ¤¹¤ë ¥¹¥Ú¥·¥ã¥ë¥Õ¥¡¥¤¥ë¤Ç¤¢¤ë¡£(Îã: /dev/hdXX)

¥ª¥×¥·¥ç¥ó

-w

¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ò read/write ¥â¡¼¥É¤Ç¥ª¡¼¥×¥ó¤¹¤ë¡£ ¤³¤Î¥ª¥×¥·¥ç¥ó¤ò»ØÄꤷ¤Ê¤¤¾ì¹ç¤Ï¡¢ ¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ï read-only ¥â¡¼¥É¤Ç¥ª¡¼¥×¥ó¤µ¤ì¤ë¡£

-c

¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ò catastrophic (¿ÓÂç¤ÊÇË»¤¬µ¯¤³¤Ã¤¿¾ì¹ç¤Î) ¥â¡¼¥É¤Ç¥ª¡¼¥×¥ó¤¹¤ë¡£ ¤³¤Î¥â¡¼¥É¤Ç¤Ï inode ¤È¥°¥ë¡¼¥×¥Ó¥Ã¥È¤òºÇ½é¤ËÆɤ߹þ¤Þ¤Ê¤¤¡£ ¤³¤ì¤Ï½ÅÅÙ¤ËÇË»¤·¤¿¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ËÂФ·¤Æ¤ÏÍ­¸ú¤Ê¤³¤È¤¬¤¢¤ë¤¬¡¢ °ìÊý¤³¤Î¤¿¤á catastrophic ¥â¡¼¥É¤Ç¤Ï¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ò read-only ¤Ç¤·¤«¥ª¡¼¥×¥ó¤Ç¤­¤Ê¤¤¡£

-i

device ¤¬ e2image ¥×¥í¥°¥é¥à¤Ë¤è¤Ã¤ÆºîÀ®¤µ¤ì¤¿ ext2 ¥¤¥á¡¼¥¸¥Õ¥¡¥¤¥ë¤Ç¤¢¤ë¤³¤È¤ò»ØÄꤹ¤ë¡£ ext2 ¥¤¥á¡¼¥¸¥Õ¥¡¥¤¥ë¤Ï¡¢¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¡¦ ¥Ö¥í¥Ã¥¯¥°¥ë¡¼¥×¥Ç¥£¥¹¥¯¥ê¥×¥¿¡¦¥Ö¥í¥Ã¥¯¥¢¥í¥±¡¼¥·¥ç¥ó¥Ó¥Ã¥È¥Þ¥Ã¥×¡¦ inode ¥¢¥í¡¼¥±¥·¥ç¥ó¥Ó¥Ã¥È¥Þ¥Ã¥×¡¦inode ¥Æ¡¼¥Ö¥ë¤·¤«»ý¤¿¤Ê¤¤¤Î¤Ç¡¢ debugfs ¤Î¿¤¯¤Î¥³¥Þ¥ó¥É¤¬Àµ¤·¤¯µ¡Ç½¤·¤Ê¤¤¡£ ·Ù¹ð: °ÂÁ´À­¤Î¥Á¥§¥Ã¥¯¤Ï¹Ô¤ï¤Ê¤¤¡£ ¤Þ¤¿¡¢ -d ¥ª¥×¥·¥ç¥ó¤Ë¤è¤Ã¤Æ data_source_device ¤ò»ØÄꤻ¤º¤Ë¡¢ ls, dump ¤Ê¤É¤Î¥³¥Þ¥ó¥É¤ò¼Â¹Ô¤·¤¿¾ì¹ç¤Ë¤Ï debugfs ¤ÏÊѤÊÉ÷¤Ë¼ºÇÔ¤¹¤ë¤«¤â¤·¤ì¤Ê¤¤¡£ debugfs ¤Ï¥Ç¥Ð¥Ã¥°ÍѤΥġ¼¥ë¤Ê¤Î¤Ç¡¢ÀöÎý¤µ¤ì¤¿Éôʬ¤Î¤ß¤Ç¤¢¤ë¤È¤Ï¸Â¤é¤Ê¤¤!

-d data_source_device

-i ¥ª¥×¥·¥ç¥ó¤È¶¦¤Ë»ÈÍѤµ¤ì¡¢ Æɤ߹þ¤ß¥Ö¥í¥Ã¥¯¤¬ ext2 ¥¤¥á¡¼¥¸¥Õ¥¡¥¤¥ë¤Ë¸«¤Ä¤«¤é¤Ê¤¤¾ì¹ç¤Ë¤Ï¡¢ »ØÄꤵ¤ì¤¿ data_source_device ¤¬»ÈÍѤµ¤ì¤ë¡£ ¤³¤Î¥Ç¥Ð¥¤¥¹¤Ë¤Ï¥Ç¡¼¥¿¡¦¥Ç¥£¥ì¥¯¥È¥ê¡¦´ÖÀÜ (indirect) ¥Ö¥í¥Ã¥¯¤¬´Þ¤Þ¤ì¤ë¡£

-b blocksize

Ä̾ï¤Î¤è¤¦¤ËÀµ¤·¤¤¥Ö¥í¥Ã¥¯¥µ¥¤¥º¤ò¸¡½Ð¤¹¤ëÆ°ºî¤ò¹Ô¤ï¤º¡¢ »ØÄꤷ¤¿¥Ö¥í¥Ã¥¯¥µ¥¤¥º¤ò¤½¤Î¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ËÍѤ¤¤ë¡£

-s superblock

¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Î¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¤ò¡¢¥Ç¥Õ¥©¥ë¥È¤Î 1 ¤Ç¤Ï¤Ê¤¯¡¢ »ØÄꤷ¤¿¥Ö¥í¥Ã¥¯Èֹ椫¤éÆɤޤ»¤ë¡£ -s ¥ª¥×¥·¥ç¥ó¤ò»ØÄꤷ¤¿¾ì¹ç¡¢ -b ¥ª¥×¥·¥ç¥ó¤â»ØÄꤷ¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£

-f cmd_file

debugfs ¤Ë¡¢ cmd_file ¤«¤é¥³¥Þ¥ó¥É¤òÆɤ߹þ¤Þ¤»¡¢¼Â¹Ô¤µ¤»¤ë¡£ ¥³¥Þ¥ó¥É¤Î¼Â¹Ô¤ò½ªÎ»¤¹¤ë¤È¡¢ debugfs ¤Ï½ªÎ»¤¹¤ë¡£

-R request

request ¤È¤¤¤¦¤Ò¤È¤Ä¤Î¥³¥Þ¥ó¥É¤ò¼Â¹Ô¤·¡¢½ªÎ»¤¹¤ë¡£

-V

debugfs ¤Î¥Ð¡¼¥¸¥ç¥ó¤òɽ¼¨¤·¤Æ½ªÎ»¤¹¤ë¡£

¥Õ¥¡¥¤¥ë»ØÄê

debugfs ¤Î¥³¥Þ¥ó¥É¤Î¿¤¯¤Ï¡¢ debugfs ¤¬¸½ºß¥ª¡¼¥×¥ó¤·¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤ª¤±¤ë inode (¥Ñ¥¹Ì¾¤Ç¤Ï¤Ê¤¤) ¤ò¼¨¤¹ filespec ¤È¤¤¤¦°ú¿ô¤ò¼è¤ë¡£ filespec ¤Ë¤Ï 2 ¼ïÎà¤Îɽµ­Ë¡¤¬¤¢¤ë¡£¤Ò¤È¤Ä¤Ï¡¢inode ÈÖ¹æ¤ò <> ¤Ç°Ï¤àÊýË¡¤Ç¤¢¤ë (Îã: <2>)¡£ ¤â¤¦¤Ò¤È¤Ä¤Ï¥Ñ¥¹Ì¾¤Ç»ØÄꤹ¤ëÊýË¡¤Ç¤¢¤ë¡£ ¥Ñ¥¹Ì¾¤¬¡Ö/ (¥¹¥é¥Ã¥·¥å)¡×¤Ç¤Ï¤¸¤Þ¤ë¾ì¹ç¡¢ debugfs ¤¬¸½ºß¥ª¡¼¥×¥ó¤·¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Î¥ë¡¼¥È¤«¤é¤ÎÁêÂХѥ¹¤òɽ¤¹¡£ ¡Ö/¡×¤Ç»Ï¤Þ¤é¤Ê¤¤¾ì¹ç¡¢¥«¥ì¥ó¥È¥ï¡¼¥­¥ó¥°¥Ç¥£¥ì¥¯¥È¥ê¤«¤é¤ÎÁêÂХѥ¹¤òɽ¤¹¡£ ¥«¥ì¥ó¥È¥ï¡¼¥­¥ó¥°¥Ç¥£¥ì¥¯¥È¥ê¤Ï debugfs ¤Î cd ¥³¥Þ¥ó¥É¤Ë¤è¤Ã¤ÆÊѹ¹¤Ç¤­¤ë¡£

¥³¥Þ¥ó¥É

debugfs ¤¬¥µ¥Ý¡¼¥È¤¹¤ë¥³¥Þ¥ó¥É¤Î°ìÍ÷¤ò°Ê²¼¤Ë¼¨¤¹¡£

bmap filespec logical_block

filespec ¤Ç»ØÄꤷ¤¿ inode ¤Ë¤ª¤±¤ëÏÀÍý¥Ö¥í¥Ã¥¯ÈÖ¹æ logical_block ¤ËÂбþ¤¹¤ëʪÍý¥Ö¥í¥Ã¥¯ÈÖ¹æ¤òɽ¼¨¤¹¤ë¡£

cat filespec

filespec ¤Ç»ØÄꤷ¤¿ inode ¤ÎÆâÍƤòɸ½à½ÐÎϤإÀ¥ó¥×¤¹¤ë¡£

cd filespec

¥«¥ì¥ó¥È¥ï¡¼¥­¥ó¥°¥Ç¥£¥ì¥¯¥È¥ê¤ò filespec ¤Ç»ØÄꤷ¤¿¥Ç¥£¥ì¥¯¥È¥ê¤ËÊѹ¹¤¹¤ë¡£

chroot filespec

¥ë¡¼¥È¥Ç¥£¥ì¥¯¥È¥ê¤ò filespec ¤Ç»ØÄꤷ¤¿¥Ç¥£¥ì¥¯¥È¥ê¤ËÊѹ¹¤¹¤ë¡£

close

¸½ºß¥ª¡¼¥×¥ó¤·¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ò¥¯¥í¡¼¥º¤¹¤ë¡£

clri file

file ¤Ç»ØÄꤷ¤¿ inode ¤ÎÆâÍƤò¥¯¥ê¥¢¤¹¤ë¡£

dump [-p] filspec out_file

filespec ¤Ç»ØÄꤷ¤¿ inode ¤ÎÆâÍƤò out_file ¤Ç»ØÄꤷ¤¿¥Õ¥¡¥¤¥ë¤Ë¥À¥ó¥×¤¹¤ë¡£ -p ¥ª¥×¥·¥ç¥ó¤òÍ¿¤¨¤ë¤È¡¢ out_file ¤Î½êÍ­¼Ô (owner)¡¢½êÍ­¥°¥ë¡¼¥× (group)¡¢¥Ñ¡¼¥ß¥Ã¥·¥ç¥ó (permission) ¤ò filespec ¤ÈƱ¤¸¤Ë¤¹¤ë¡£

expand_dir filespec

filespec ¤Ç»ØÄꤷ¤¿¥Ç¥£¥ì¥¯¥È¥ê¤òŸ³«¤¹¤ë¡£

feature [fs_feature] [-fs_feature] ...

¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¤ÎÍÍ¡¹¤Ê¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à°À­¤ò¥»¥Ã¥È/¥¯¥ê¥¢¤¹¤ë¡£ Í×µá¤Î¤¢¤Ã¤¿Â°À­¤ò¥»¥Ã¥È/¥¯¥ê¥¢¤·¤¿¸å¤Ï¡¢ ¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à°À­¤Î¸½ºß¾õÂ֤ΰìÍ÷¤òɽ¼¨¤¹¤ë¡£

find_free_block [count [goal]]

goal ¤«¤é»Ï¤Þ¤ëºÇ½é¤Î count ʬ¤Î¶õ¤­¥Ö¥í¥Ã¥¯¤òõ¤·¡¢¤½¤Î¶õ¤­¥Ö¥í¥Ã¥¯¤ò¥¢¥í¥±¡¼¥È (allocate) ¤¹¤ë¡£

find_free_inode [dir [mode]]

¶õ¤­ inode ¤òõ¤·¡¢¤½¤Î inode ¤ò¥¢¥í¥±¡¼¥È¤¹¤ë¡£ dir ¤ò»ØÄꤹ¤ë¤È¡¢ ¤³¤ì¤Ï¤½¤Î inode ¤òÃÖ¤¯¤Ù¤­¥Ç¥£¥ì¥¯¥È¥ê¤Î inode ¤È²ò¼á¤µ¤ì¤ë¡£ ¤µ¤é¤Ë mode ¤ò»ØÄꤹ¤ë¤È¡¢ ¤³¤ì¤Ï¿·¤·¤¤ inode ¤Î¥Ñ¡¼¥ß¥Ã¥·¥ç¥ó¤È²ò¼á¤µ¤ì¤ë¡£ (mode ¤Ë¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤¢¤ë¤³¤È¤ò»ØÄꤹ¤ë¥Ó¥Ã¥È¤¬Î©¤Ã¤Æ¤¤¤ë¾ì¹ç¡¢ ¥¢¥í¥±¡¼¥È¥ë¡¼¥Á¥ó¤ÎµóÆ°¤Ï°Û¤Ê¤ë¤â¤Î¤Ë¤Ê¤ë¡£)

freeb block [count]

¥Ö¥í¥Ã¥¯ÈÖ¹æ block ¤ò¥¢¥í¥±¡¼¥È¤µ¤ì¤Æ¤¤¤Ê¤¤¤â¤Î¤È¤·¤Æ¥Þ¡¼¥¯¤¹¤ë¡£ ¾Êά²Äǽ¤Ê°ú¿ô count ¤ò»ØÄꤹ¤ë¤È¡¢¥Ö¥í¥Ã¥¯ÈÖ¹æ block ¤«¤é»Ï¤Þ¤ë count ʬ¤Î¥Ö¥í¥Ã¥¯¤ò¥¢¥í¥±¡¼¥È¤µ¤ì¤Æ¤¤¤Ê¤¤¤â¤Î¤È¤·¤Æ¥Þ¡¼¥¯¤¹¤ë¡£

freei filespec

filespec ¤Ç»ØÄꤷ¤¿ inode ¤ò²òÊü¤¹¤ë¡£

help

debugfs(8) ¤ÇÍøÍѤǤ­¤ë¥³¥Þ¥ó¥É¤Î¥ê¥¹¥È¤òɽ¼¨¤¹¤ë¡£

icheck block ...

¥³¥Þ¥ó¥É¥é¥¤¥ó¤ËÍ¿¤¨¤¿¥Ö¥í¥Ã¥¯ (Ê£¿ô»ØÄê²Ä) ¤òÍøÍѤ·¤Æ¤¤¤ë inode ¤Î¥ê¥¹¥È¤òɽ¼¨¤¹¤ë¡£

imap filespec

filespec ¤Ç»ØÄꤵ¤ì¤¿ inode ¤Î (inode ¥Æ¡¼¥Ö¥ë¤Ë¤ª¤±¤ë) inode ¥Ç¡¼¥¿¹½Â¤¤Î¾ì½ê¤òɽ¼¨¤¹¤ë¡£

init_filesys device blocksize

device ¾å¤Ë¡¢¥Ç¥Ð¥¤¥¹¥µ¥¤¥º blocksize ¤Î ext2 ¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤òºîÀ®¤¹¤ë¡£ ¤³¤Î¥³¥Þ¥ó¥É¤Ï¡¢¤¹¤Ù¤Æ¤Î¥Ç¡¼¥¿¹½Â¤¤ò´°Á´¤Ë½é´ü²½¤¹¤ë¤ï¤±¤Ç¤Ï¤Ê¤¤¡£ ¤³¤ì¤ò¤·¤¿¤¤¾ì¹ç¤Ï mke2fs(8) ¥×¥í¥°¥é¥à¤òÍѤ¤¤ë¤³¤È¡£ ¤³¤Î¥³¥Þ¥ó¥É¤Ï¡¢Ã±¤Ë¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¤È¥Ö¥í¥Ã¥¯¥Ç¥£¥¹¥¯¥ê¥×¥¿¤òÀßÄꤹ¤ë Äã¥ì¥Ù¥ë¥é¥¤¥Ö¥é¥ê¤ò¸Æ¤Ó½Ð¤¹¤À¤±¤Ç¤¢¤ë¡£

kill_file filespec

filespec ¤Ç»ØÄꤷ¤¿ inode ¤È¡¢ ¤½¤Î inode ¤¬»ÈÍѤ·¤Æ¤¤¤ë¥Ö¥í¥Ã¥¯¤ò¥¢¥í¥±¡¼¥È¤«¤é³°¤¹ (deallocate)¡£ ¤Ê¤ª¡¢¤½¤Î inode ¤ËÂбþ¤¹¤ë¥Ç¥£¥ì¥¯¥È¥ê¥¨¥ó¥È¥ê¤Ïºï½ü¤·¤Ê¤¤¤³¤È¤ËÃí°Õ¡£ ¥Õ¥¡¥¤¥ë¤ò unlink ¤·¤¿¤¤¾ì¹ç¤Ï rm ¥³¥Þ¥ó¥É¤ò»²¾È¤Î¤³¤È¡£

lcd directory

debugfs ¥×¥í¥»¥¹¤Î¥«¥ì¥ó¥È¥ï¡¼¥­¥ó¥°¥Ç¥£¥ì¥¯¥È¥ê¤ò ¥Í¥¤¥Æ¥£¥Ö¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à (ÌõÃð: ºî¶ÈÂоݤΤâ¤Î¤Ç¤Ï¤Ê¤¯¡¢ debugfs ¤¬¸Æ¤Ó½Ð¤µ¤ì¡¢²ÔƯ¤·¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à) ¾å¤Î directory ¤ËÊѹ¹¤¹¤ë¡£

ln filespec dest_file

filespec ¤ò»Ø¤¹¥ê¥ó¥¯ dest_file ¤òºîÀ®¤¹¤ë¡£ ¤³¤ÎºÝ inode ¤Î»²¾È¿ô (reference counts) ¤ÏÊѹ¹¤·¤Ê¤¤¤³¤È¤ËÃí°Õ¡£

logdump [-acs] [-b<block>] [-i<filespec>] [-f<journal_file>] [output_file]

ext3 ¥¸¥ã¡¼¥Ê¥ë¤ÎÆâÍƤò¥À¥ó¥×¤¹¤ë¡£ ¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¥¸¥ã¡¼¥Ê¥ë inode ¤Ï¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¤Ç»ØÄꤵ¤ì¤ë¡£ ¤·¤«¤· -i ¥ª¥×¥·¥ç¥ó¤Ç¾å½ñ¤­¤¹¤ë¤³¤È¤â²Äǽ¤Ç¤¢¤ë¡£ -i ¥ª¥×¥·¥ç¥ó¤Ï»ÈÍѤµ¤ì¤ë¥¸¥ã¡¼¥Ê¥ë¤ò»ØÄꤹ¤ë inode »ØÄê»Ò¤ò»È¤¦¡£ ¥¸¥ã¡¼¥Ê¥ë¥Ç¡¼¥¿¤¬½ñ¤«¤ì¤¿¥Õ¥¡¥¤¥ë¤Ï¡¢ -f ¥ª¥×¥·¥ç¥ó¤ò»È¤Ã¤Æ»ØÄꤹ¤ë¤³¤È¤¬¤Ç¤­¤ë¡£ ¤½¤·¤Æ -s ¥ª¥×¥·¥ç¥ó¤Ï¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¤Ë¤¢¤ë¥Ð¥Ã¥¯¥¢¥Ã¥×¾ðÊó¤ò»È¤Ã¤Æ¡¢ ¥¸¥ã¡¼¥Ê¥ë¤ò¥¢¥í¥±¡¼¥È¤¹¤ë¡£

-a ¥ª¥×¥·¥ç¥ó¤ò»ØÄꤹ¤ë¤È¡¢ logdump ¥×¥í¥°¥é¥à¤ÏÁ´¤Æ¤Î¥Ç¥£¥¹¥¯¥ê¥×¥¿¥Ö¥í¥Ã¥¯¤ÎÆâÍƤòɽ¼¨¤¹¤ë¡£ -b ¥ª¥×¥·¥ç¥ó¤ò»ØÄꤹ¤ë¤È¡¢ logdump ¥×¥í¥°¥é¥à¤Ï»ØÄꤵ¤ì¤¿¥Ö¥í¥Ã¥¯¤ò»²¾È¤¹¤ëÁ´¤Æ¤Î¥¸¥ã¡¼¥Ê¥ë¥ì¥³¡¼¥É¤òɽ¼¨¤¹¤ë¡£ -c ¥ª¥×¥·¥ç¥ó¤ò»ØÄꤹ¤ë¤È¡¢ -a ¤È -b ¥ª¥×¥·¥ç¥ó¤ÇÁªÂò¤µ¤ì¤¿Á´¤Æ¤Î¥Ç¡¼¥¿¥Ö¥í¥Ã¥¯¤ÎÆâÍƤòɽ¼¨¤¹¤ë¡£

ls [-l] [-d] filespec

filespec ¤Ç»ØÄꤷ¤¿¥Ç¥£¥ì¥¯¥È¥êÆâ¤Ë¤¢¤ë¥Õ¥¡¥¤¥ë¤ò¥ê¥¹¥Èɽ¼¨¤¹¤ë¡£ -l ¥Õ¥é¥°¤ò»ØÄꤹ¤ë¤È¡¢¤è¤ê¾ÜºÙ¤Ê½ñ¼°¤Ç¥Õ¥¡¥¤¥ë¤ò¥ê¥¹¥Èɽ¼¨¤¹¤ë¡£ -d ¥Õ¥é¥°¤ò»ØÄꤹ¤ë¤È¡¢ ¤³¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ë¤¢¤ëºï½ü¥¨¥ó¥È¥ê (deleted entry) ¤ò¥ê¥¹¥Èɽ¼¨¤¹¤ë¡£

modify_inode filespec

filespec ¤Ç»ØÄꤷ¤¿ inode ¤Ë¤¢¤ë inode ¹½Â¤ÂΤÎÆâÍƤòÊѹ¹¤¹¤ë¡£

mkdir filespec

¥Ç¥£¥ì¥¯¥È¥ê¤òºîÀ®¤¹¤ë¡£

mknod filespec [p|[[c|b] major minor]]

¥¹¥Ú¥·¥ã¥ë¥Ç¥Ð¥¤¥¹¥Õ¥¡¥¤¥ë (̾Á°ÉÕ¤­¥Ñ¥¤¥×¡¢¥­¥ã¥é¥¯¥¿¥Ç¥Ð¥¤¥¹¡¢¥Ö¥í¥Ã¥¯¥Ç¥Ð¥¤¥¹) ¤òºîÀ®¤¹¤ë¡£ ¥­¥ã¥é¥¯¥¿¥Ç¥Ð¥¤¥¹¤ª¤è¤Ó¥Ö¥í¥Ã¥¯¥Ç¥Ð¥¤¥¹¤òºîÀ®¤¹¤ë¾ì¹ç¤Ï¡¢ ¥Ç¥Ð¥¤¥¹ÈÖ¹æ¤È¤·¤Æ major ¤ª¤è¤Ó minor ¤ò»ØÄꤷ¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£

ncheck inode_num ...

»ØÄꤷ¤¿ inode Èֹ椽¤ì¤¾¤ì¤ËÂбþ¤¹¤ë¥Ñ¥¹Ì¾¤Î¥ê¥¹¥È¤òɽ¼¨¤¹¤ë¡£

open [-w] [-e] [-f] [-i] [-c] [-b blocksize] [-s superblock] device

ÊÔ½¸¤ÎÂоݤȤ¹¤ë¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ò¥ª¡¼¥×¥ó¤¹¤ë¡£ -f ¥Õ¥é¥°¤ò¤Ä¤±¤ë¤È¡¢Ä̾ï¤Ç¤Ï¥ª¡¼¥×¥ó¤Ç¤­¤Ê¤¤¤è¤¦¤Ê¡¢ ÉÔÌÀ¤Ê¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤äÈó¸ß´¹¤Ê¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ç¤â ¶¯À©Åª¤Ë¥ª¡¼¥×¥ó¤¹¤ë¡£ -e ¥Õ¥é¥°¤ò¤Ä¤±¤ë¤È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤òÇÓ¾¥â¡¼¥É¤Ç¥ª¡¼¥×¥ó¤¹¤ë¡£ -b, -c, -i, -s, -w ¥ª¥×¥·¥ç¥ó¤ò»ØÄꤷ¤¿¾ì¹ç¤ÎÆ°ºî¤Ï¡¢ debugfs ¤Ë¥³¥Þ¥ó¥É¥é¥¤¥ó¥ª¥×¥·¥ç¥ó¤ò»ØÄꤷ¤¿¾ì¹ç¤ÈƱ¤¸¤Ç¤¢¤ë¡£

pwd

¥«¥ì¥ó¥È¥ï¡¼¥­¥ó¥°¥Ç¥£¥ì¥¯¥È¥ê¤òɽ¼¨¤¹¤ë¡£

quit

debugfs ¤ò½ªÎ»¤¹¤ë¡£

rdump directory destination

directory ¤È (Ä̾ï¤Î¥Õ¥¡¥¤¥ë¡¦¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¡¦ ¤½¤Î¾¤Î¥Ç¥£¥ì¥¯¥È¥ê¤ò´Þ¤à) ¤½¤Î¥Ç¥£¥ì¥¯¥È¥ê¤ÎÁ´¤Æ¤ÎÆâÍƤò¡¢ destination ¤È¤¤¤¦Ì¾Á°¤Î¥Ç¥£¥ì¥¯¥È¥ê¤ËºÆµ¢Åª¤Ë¥À¥ó¥×¤¹¤ë¡£ destination ¤Ï¥Í¥¤¥Æ¥£¥Ö¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¾å¤Ë¸ºß¤¹¤ë¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£

rm pathname

pathname ¤Ç»ØÄꤷ¤¿¥Ñ¥¹Ì¾¤ò unlink ¤¹¤ë¡£ pathname ¤Î¼¨¤¹ inode ¤¬²¿¤â»²¾È¤·¤Ê¤¯¤Ê¤Ã¤¿¾ì¹ç¤Ë¤Ï¡¢ ¥Õ¥¡¥¤¥ë¤Î¥¢¥í¥±¡¼¥È¤ò³°¤¹¡£ ¤³¤Î¥³¥Þ¥ó¥É¤Ï unlink() ¥·¥¹¥Æ¥à¥³¡¼¥ë¤Î¤è¤¦¤ËÆ°ºî¤¹¤ë¡£

rmdir filespec

filespec ¤Ç»ØÄꤷ¤¿¥Ç¥£¥ì¥¯¥È¥ê¤ò¾Ãµî¤¹¤ë¡£

setb block [count]

¥Ö¥í¥Ã¥¯ÈÖ¹æ block ¤ò¥¢¥í¥±¡¼¥È¤µ¤ì¤Æ¤¤¤ë¤â¤Î¤È¤·¤Æ¥Þ¡¼¥¯¤¹¤ë¡£ ¾Êά²Äǽ¤Ê°ú¿ô count ¤ò»ØÄꤹ¤ë¤È¡¢¥Ö¥í¥Ã¥¯ÈÖ¹æ block ¤«¤é»Ï¤Þ¤ë count ʬ¤Î¥Ö¥í¥Ã¥¯¤ò¥¢¥í¥±¡¼¥È¤µ¤ì¤Æ¤¤¤ë¤â¤Î¤È¤·¤Æ¥Þ¡¼¥¯¤¹¤ë¡£

seti filespec

inode ¥Ó¥Ã¥È¥Þ¥Ã¥×¤Ë¡¢ filespec ¤Ç»ØÄꤷ¤¿ inode ¤¬»ÈÍÑÃæ¤Ç¤¢¤ë¤È¥Þ¡¼¥¯¤¹¤ë¡£

set_inode_field filespec field value

filespec ¤Ç»ØÄꤵ¤ì¤¿ inode ¤òÊѹ¹¤·¡¢inode ¥Õ¥£¡¼¥ë¥É field ¤¬ÃÍ value ¤ò»ý¤Ä¤è¤¦¤Ë¤¹¤ë¡£ ¤³¤Î¥³¥Þ¥ó¥É¤ÇÀßÄ꤬²Äǽ¤Ê¡¢Àµ¤·¤¤ inode ¥Õ¥£¡¼¥ë¥É¤Î¥ê¥¹¥È¤Ï¡¢ set_inode_field -l ¥³¥Þ¥ó¥É¤Ë¤è¤Ã¤Æɽ¼¨¤Ç¤­¤ë¡£

set_super_value field value

¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¥Õ¥£¡¼¥ë¥É field ¤ò value ¤Ë¤¹¤ë¡£¤³¤Î¥³¥Þ¥ó¥É¤ÇÀßÄ꤬²Äǽ¤Ê¡¢ Àµ¤·¤¤¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¥Õ¥£¡¼¥ë¥É¤Î¥ê¥¹¥È¤Ï¡¢ set_super_value -l ¥³¥Þ¥ó¥É¤Ë¤è¤Ã¤Æɽ¼¨¤Ç¤­¤ë¡£

show_super_stats [-h]

¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¤È¥Ö¥í¥Ã¥¯¥°¥ë¡¼¥×¥Ç¥£¥¹¥¯¥ê¥×¥¿¤ÎÆâÍƤòɽ¼¨¤¹¤ë¡£ -h ¥Õ¥é¥°¤¬Í¿¤¨¤é¤ì¤ë¤È¡¢ ¥¹¡¼¥Ñ¡¼¥Ö¥í¥Ã¥¯¤ÎÆâÍƤÀ¤±¤òɽ¼¨¤¹¤ë¡£

stat filespec

filespec ¤Ç»ØÄꤷ¤¿ inode ¤Î inode ¹½Â¤ÂΤÎÆâÍƤòɽ¼¨¤¹¤ë¡£

testb block [count]

¥Ö¥í¥Ã¥¯ÈÖ¹æ block ¤¬¥Ö¥í¥Ã¥¯¥Ó¥Ã¥È¥Þ¥Ã¥×¤Ë¤ª¤¤¤Æ¥¢¥í¥±¡¼¥È¤Ë¤Ê¤Ã¤Æ¤¤¤ë¤«¤É¤¦¤«Ä´¤Ù¤ë¡£ ¾Êά²Äǽ¤Ê°ú¿ô count ¤ò»ØÄꤹ¤ë¤È¡¢¥Ö¥í¥Ã¥¯ÈÖ¹æ block ¤«¤é»Ï¤Þ¤ë count ʬ¤Î¥Ö¥í¥Ã¥¯¤ò¸¡ºº¤¹¤ë¡£

testi filespec

filespec ¤Ç»ØÄꤷ¤¿ inode ¤¬ inode ¥Ó¥Ã¥È¥Þ¥Ã¥×¤Ë¤ª¤¤¤Æ¥¢¥í¥±¡¼¥È¤Ë¤Ê¤Ã¤Æ¤¤¤ë¤«¤É¤¦¤«Ä´¤Ù¤ë¡£

unlink pathname

pathname ¤Ç»ØÄꤷ¤¿¡¢¤¢¤ë inode ¤ò»Ø¤¹¥ê¥ó¥¯¤òºï½ü¤¹¤ë¡£ ¤Ê¤ª¤³¤ÎºÝ¡¢inode »²¾È¿ô¤ÏÊѹ¹¤·¤Ê¤¤¤³¤È¤ËÃí°Õ¡£

write source_file out_file

¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥àÆâ¤Ë out_file ¤Ç»ØÄꤷ¤¿¥Õ¥¡¥¤¥ë¤òºîÀ®¤·¡¢ source_file ¤ÎÆâÍƤò¤½¤Î¥Õ¥¡¥¤¥ë¤Ë¥³¥Ô¡¼¤¹¤ë¡£

´Ä¶­ÊÑ¿ô

DEBUGFS_PAGER, PAGER

debugfs(8) ¤Ï¤¤¤¯¤Ä¤«¤Î¥³¥Þ¥ó¥É¤Î½ÐÎϤò¾ï¤Ë¥Ú¡¼¥¸¥ã¥×¥í¥°¥é¥à¤Ë¥Ñ¥¤¥×¤¹¤ë¡£ ¤½¤Î¤è¤¦¤Ê¥³¥Þ¥ó¥É¤È¤·¤Æ¤Ï¡¢ show_super_stats, list_directory, show_inode_info, list_deleted_inodes, htree_dump ¤¬¤¢¤ë¡£ ÆÃÄê¤Î¥Ú¡¼¥¸¥ã¤ò´Ä¶­ÊÑ¿ô DEBUGFS_PAGER ¤ÇÌÀ¼¨Åª¤Ë»ØÄꤹ¤ë¤³¤È¤¬¤Ç¤­¤ë¡£ ¤³¤Î´Ä¶­ÊÑ¿ô¤¬ÀßÄꤵ¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¤Ï¡¢´Ä¶­ÊÑ¿ô PAGER ¤Ç»ØÄꤵ¤ì¤ë¡£

1 ¤Ä¤Î¥Ú¡¼¥¸¥ã¤¬¾ï¤Ë»È¤ï¤ì¤ë¤Î¤Ç¡¢ less(1) ¥Ú¡¼¥¸¥ã¤ÏÆäËŬ¤µ¤Ê¤¤ÅÀ¤ËÃí°Õ¤¹¤ë¤³¤È¡£ less(1) ¤Ï¥³¥Þ¥ó¥É¤Îɽ¼¨¤òɽ¼¨¤¹¤ëÁ°¤Ë¥¹¥¯¥ê¡¼¥ó¤ò¥¯¥ê¥¢¤·¤¿¤ê¡¢ ¥Ú¡¼¥¸¥ã¤¬½ªÎ»¤¹¤ë¤È¤­¤Ë¥¹¥¯¥ê¡¼¥ó¤Ø¤Î½ÐÎϤò¥¯¥ê¥¢¤·¤Æ¤·¤Þ¤¦¤«¤é¤Ç¤¢¤ë¡£ ¿¤¯¤Î¥æ¡¼¥¶¤Ï less(1) ¥Ú¡¼¥¸¥ã¤ò¤¤¤í¤¤¤í¤ÊÌÜŪ¤Ë»È¤¦¤Î¤ò¹¥¤ó¤Ç¤¤¤ë¡£ ¤³¤ì¤¬´Ä¶­ÊÑ¿ô DEBUGFS_PAGER ¤Ç¡¢¤è¤ê°ìÈÌŪ¤Ê´Ä¶­ÊÑ¿ô PAGER ¤ò¾å½ñ¤­¤Ç¤­¤ëÍýͳ¤Ç¤¢¤ë¡£

Ãø¼Ô

debugfs ¤Ï Theodore Ts'o <tytso@mit.edu> ¤Ë¤è¤Ã¤ÆºîÀ®¤µ¤ì¤¿¡£

´ØÏ¢¹àÌÜ

dumpe2fs(8), e2fsck(8), mke2fs(8)