{"id":50,"date":"2006-12-03T12:02:38","date_gmt":"2006-12-03T10:02:38","guid":{"rendered":"http:\/\/blog.funix.org\/?p=50"},"modified":"2012-04-10T14:54:20","modified_gmt":"2012-04-10T13:54:20","slug":"crash-de-disque","status":"publish","type":"post","link":"https:\/\/olivier.hoarau.org\/?p=50","title":{"rendered":"Crash de disque"},"content":{"rendered":"<p>Ce matin en bootant mon PC j&rsquo;ai eu la d\u00e9sagr\u00e9able surprise de d\u00e9couvrir deux partitions de donn\u00e9es crash\u00e9es (hdb1 et hdb5) avec le message suivant:<\/p>\n<p><strong>e2fsck: Attempt to read block from filesystem resulted in short read while trying to open \/dev\/hdb1<br \/>\nCould this be a zero length partition ?<\/strong><\/p>\n<p>Le mode automatique de r\u00e9paration n&rsquo;a rien pu faire, je suis pass\u00e9 en root, mais sans plus de succ\u00e8s avec la commande<\/p>\n<p><strong>fsck -y \/dev\/hdb1<\/strong><\/p>\n<p>voil\u00e0\u00a0 le r\u00e9sultat<\/p>\n<p><strong>fsck 1.38 (30-Jun-2005)<br \/>\ne2fsck 1.38 (30-Jun-2005)<br \/>\n\/dev\/hdb1: Attempt to read block from filesystem resulted in short read while reading block 520<\/strong><\/p>\n<p><strong>\/dev\/hdb1: Attempt to read block from filesystem resulted in short read lecture en cours du journal du superbloc<\/strong><\/p>\n<p><strong>fsck.ext3: Attempt to read block from filesystem resulted in short read lors de la v\u00e9rification du journal ext3 pour \/dev\/hdb1 <\/strong><\/p>\n<p>j&rsquo;ai remont\u00e9 ma partition <strong>\/usr <\/strong>manuellement pour pouvoir utiliser <strong>vi <\/strong>et mis en commentaire la ligne faisant r\u00e9f\u00e9rence \u00e0 <strong>hdb1<\/strong> et <strong>hdb5<\/strong>. Par la suite m\u00eame en proc\u00e9dant avec un <strong>fsck<\/strong> sur d&rsquo;autres sauvegardes de superbloc, j&rsquo;ai toujours but\u00e9 sur la m\u00eame erreur, je m&rsquo;en suis sorti comme \u00e7a, en recr\u00e9ant la table des super blocs comme cela<\/p>\n<p><strong>mke2fs -S \/dev\/hdb1<\/strong><\/p>\n<p>voil\u00e0 le r\u00e9sultat<\/p>\n<p><strong>mke2fs 1.38 (30-Jun-2005)<br \/>\n\u00e9tiquette de syst\u00e8me de fichiers=<br \/>\nType de syst\u00e8me d&rsquo;exploitation: Linux<br \/>\nTaille de bloc=4096 (log=2)<br \/>\nTaille de fragment=4096 (log=2)<br \/>\n2301120 inodes, 4594582 blocs<br \/>\n229729 blocs (5.00%) r\u00e9serv\u00e9 pour le super usager<br \/>\nPremier bloc de donn\u00e9es=0<br \/>\n141 bloc de groupes<br \/>\n32768 blocs par groupe, 32768 fragments par groupe<br \/>\n16320 inodes par groupe<br \/>\nArchive du superbloc stock\u00e9e sur les blocs:<br \/>\n32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,<br \/>\n4096000<\/strong><\/p>\n<p><strong>Ecriture des superblocs et de l&rsquo;information de comptabilit\u00e9 du syst\u00e8me de fichiers: compl\u00e9t\u00e9<\/strong><\/p>\n<p><strong>Le syst\u00e8me de fichiers sera automatiquement v\u00e9rifi\u00e9 tous les 30 montages ou apr\u00e8s<br \/>\n180 jours, selon la premi\u00e8re \u00e9ventualit\u00e9. Utiliser tune2fs -c ou -i pour \u00e9craser la valeur.<\/strong><\/p>\n<p>Ensuite il suffit de taper tout simplement<strong> fsck -y \/dev\/hdb1<\/strong>, on monte le fichier manuellement, et on retrouve l&rsquo;ensemble des fichiers dans le r\u00e9pertoire <strong>lost+found<\/strong>, ouf ! Bon \u00e9videment s&rsquo;il s&rsquo;agit d&rsquo;une partition syst\u00e8me c&rsquo;est une autre paire de manches, en clair vous \u00eates plut\u00f4t mal&#8230;<strong><br \/>\n<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ce matin en bootant mon PC j&rsquo;ai eu la d\u00e9sagr\u00e9able surprise de d\u00e9couvrir deux partitions de donn\u00e9es crash\u00e9es (hdb1 et hdb5) avec le message suivant: e2fsck: Attempt to read block from filesystem resulted in short read while trying to open \/dev\/hdb1 Could this be a zero length partition ? Le mode automatique de r\u00e9paration n&rsquo;a &hellip; <a href=\"https:\/\/olivier.hoarau.org\/?p=50\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Crash de disque<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false,"_share_on_mastodon":"0"},"categories":[5],"tags":[],"class_list":["post-50","post","type-post","status-publish","format-standard","hentry","category-logiciels-libres"],"share_on_mastodon":{"url":"","error":""},"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/peOjJ-O","jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/posts\/50","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=50"}],"version-history":[{"count":2,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/posts\/50\/revisions"}],"predecessor-version":[{"id":874,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/posts\/50\/revisions\/874"}],"wp:attachment":[{"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=50"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=50"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=50"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}