{"id":30690,"date":"2019-10-31T21:36:54","date_gmt":"2019-10-31T18:36:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/spasenie-razdela-v-debian-kogda-poshlo-chto-to-ne-tak\/"},"modified":"2019-10-31T21:36:54","modified_gmt":"2019-10-31T18:36:54","slug":"spasenie-razdela-v-debian-kogda-poshlo-chto-to-ne-tak","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/administrirovanie\/spasenie-razdela-v-debian-kogda-poshlo-chto-to-ne-tak","title":{"rendered":"Recupera\u00e7\u00e3o de parti\u00e7\u00e3o no Debian quando algo deu errado","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Bom dia, estimados
\nEra uma noite de quinta-feira e um dos nossos administradores deveria redimensionar o disco em uma das m\u00e1quinas virtuais KVM. Aparentemente uma tarefa trivial, mas pode levar \u00e0 perda de dados... E assim... toda a hist\u00f3ria est\u00e1 sob o link
\n<\/a><\/noindex>
\nComo eu j\u00e1 disse \u2014 na noite de quinta-feira (parece que n\u00e3o chovia) um dos nossos administradores decidiu executar uma tarefa pendente e aumentar o tamanho do sistema de arquivos dentro da m\u00e1quina virtual KVM<\/a>.<\/p>\n

Preliminarmente, eu j\u00e1 havia aumentado o tamanho do disco de 14 GB para 60 GB e o administrador precisava apenas aumentar o tamanho do sistema de arquivos dentro da m\u00e1quina virtual.<\/p>\n

Por volta da meia-noite, o administrador enviou uma mensagem \u2014 onde perguntou se a parti\u00e7\u00e3o deveria ser extendida ou prim\u00e1ria... Em resposta, eu disse a ele que ele deveria fazer como estava antes na pr\u00f3pria virtual. <\/p>\n

O tempo passou... e o administrador relatou que estava recebendo erros, que n\u00e3o conseguia expandir a parti\u00e7\u00e3o\u2026 e que ela parou de montar\u2026 j\u00e1 eram 2 da manh\u00e3...<\/p>\n

Eu escrevi para ele n\u00e3o fazer mais nada e deixar a m\u00e1quina virtual em paz, e fui fazer uma c\u00f3pia da imagem do disco VM \u2014 chamando de vmname_bad<\/p>\n

Tudo ficava mais complicado porque o administrador \u2014 n\u00e3o fez um snapshot e n\u00e3o copiou a parti\u00e7\u00e3o antes de suas a\u00e7\u00f5es... Com essa informa\u00e7\u00e3o, seria poss\u00edvel retroceder e tentar novamente.<\/p>\n

De manh\u00e3, com a mente fresca, eu subo a m\u00e1quina virtual com o mesmo SO (Debian 9) e conecto o disco. Atrav\u00e9s do fdisk, vejo que este disco j\u00e1 est\u00e1 expandido para 60 GB e a parti\u00e7\u00e3o\u2026 que na verdade est\u00e1 um pouco corrompida. <\/p>\n

Tento, com as capturas de tela que o administrador forneceu \u2014 encontrar a parti\u00e7\u00e3o anterior, mas infelizmente sem sucesso. Tento usar fdisk para encontrar os valores, mas todas as tentativas falham.<\/p>\n

Como o fdisk n\u00e3o p\u00f4de me ajudar\u2026 apelo ao parted. Iniciamos o parted \u2014 eu excluo a antiga parti\u00e7\u00e3o rm 2 e, sabendo os valores aproximados da parti\u00e7\u00e3o, fa\u00e7o um rescue \u2014 indicando o valor inicial e final, onde a parti\u00e7\u00e3o pode estar. Ap\u00f3s um breve momento, o parted encontra a parti\u00e7\u00e3o e sugere inserir as informa\u00e7\u00f5es sobre ela no sistema \u2014 eu concordei e sa\u00ed do parted.<\/p>\n

Monto a parti\u00e7\u00e3o \u2014 tudo OK. Os arquivos est\u00e3o no lugar, tudo certo, mas o tamanho ainda \u00e9 o antigo 14 GB. Desmontei \/dev\/sdd1 e fa\u00e7o resize2fs \/dev\/sdd1, em seguida e2fsck \/dev\/sdd1 e monto novamente e vejo a parti\u00e7\u00e3o j\u00e1 expandida com todos os arquivos e perfeitamente saud\u00e1vel. <\/p>\n

Tudo terminou bem para mim e para o administrador.
\n
Fonte: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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