From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?Sw=E2mi?= Petaramesh Subject: BTRFS, encrypted LVM and disk write cache ? Date: Thu, 12 May 2011 07:45:25 +0200 Message-ID: <1305179125.3106.3.camel@tethys> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 To: Linux BTRFS Return-path: List-ID: Hi list, I'm a new BTRFS user and will try not to ask FAQs ;-) I'm currently using Btrfs v0.19 on stock Ubuntu Natty (kernel 2.6.38) and use a BTRFS inside an encrypted LVM. The wiki "gotchas" page https://btrfs.wiki.kernel.org/index.php/Gotchas states : =C2=AB btrfs volumes on top of dm-crypt block devices (and possibly LVM= ) require write-caching to be turned off on the underlying HDD. Failing t= o do so, in the event of a power failure, may result in corruption not ye= t handled by btrfs code. (2.6.33) =C2=BB =2E..So I've turned my write cache off, but I notice this is stated for kernel 2.6.33, so wonder if this still is an issue with 2.6.38, or has it been addressed since ? Thanks in advance for your help. Kind regards. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html