{"id":111714,"date":"2023-11-23T15:10:22","date_gmt":"2023-11-23T13:10:22","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-openzfs-vyyavlena-oshibka-kotoraya-mozhet-privesti-k-povrezhdeniyu-fajlov"},"modified":"2023-11-23T15:10:22","modified_gmt":"2023-11-23T13:10:22","slug":"v-openzfs-vyyavlena-oshibka-kotoraya-mozhet-privesti-k-povrezhdeniyu-fajlov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/v-openzfs-vyyavlena-oshibka-kotoraya-mozhet-privesti-k-povrezhdeniyu-fajlov","title":{"rendered":"In OpenZFS \u00e8 stato scoperto un errore che pu\u00f2 portare a danneggiamenti dei file","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00c8 disponibile una versione intermedia del progetto OpenZFS 2.2.1, che sviluppa l'implementazione del file system ZFS per Linux e FreeBSD. Questa versione \u00e8 notevole per l'aggiunta del supporto per il kernel Linux 6.6 e per il tentativo di risolvere un problema che provoca danni ai dati (azzerramento di alcuni blocchi) nei file dopo la loro copia. <\/p>\n

Inizialmente si pensava che il problema si manifestasse solo nella branch 2.2.x e fosse causato da un errore nel meccanismo di clonazione dei blocchi incluso in OpenZFS 2.2.0, che consente di creare una copia di un file o di una sua parte senza duplicare i dati, utilizzando nella seconda copia riferimenti ai blocchi di dati esistenti del file originale senza copiarli effettivamente. Nella versione OpenZFS 2.2.1, per bloccare il problema, il meccanismo di clonazione dei blocchi \u00e8 stato disabilitato per impostazione predefinita, e per riattivare il supporto di questa modalit\u00e0 \u00e8 stata aggiunta l'impostazione zfs_bclone_enabled. <\/p>\n

Successivamente, gli sviluppatori hanno confermato la riproduzione del problema anche nelle configurazioni con la versione OpenZFS 2.1.x. Non sono state confermate nemmeno le ipotesi che il problema si manifesti su sistemi con vecchie versioni del pacchetto coreutils \u2014 l'errore \u00e8 stato riprodotto su FreeBSD e in distribuzioni Linux con l'ultima versione di coreutils 9.4. <\/p>\n

Il danneggiamento dei file si verifica in circostanze abbastanza rare; ad esempio, eseguire il comando \u00abemerge -1 dev-lang\/go\u00bb in Gentoo porta all'installazione degli strumenti per il linguaggio Go con danni ai file nella directory \/usr\/lib\/go\/pkg\/tool\/linux_amd64\/compile. Si ipotizza che l'errore abbia iniziato a manifestarsi dopo che il parametro \u00abzfs_dmu_offset_next_sync=1\u00bb \u00e8 stato impostato come predefinito nella versione openzfs 2.1.4. L'origine dell'errore non \u00e8 ancora stata identificata. Come soluzione alternativa consigliata per bloccare l'errore, \u00e8 stato suggerito di impostare su 0 il parametro \u00ab\/sys\/module\/zfs\/parameters\/zfs_dmu_offset_next_sync\u00bb.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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