From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yury Umanets Subject: Re: "Unformat" a ReiserFS partition : a testimony :-) Date: Tue, 25 Mar 2003 03:16:17 +0300 Message-ID: <3E7F9FD1.7060801@namesys.com> References: <3E7F5E33.4020709@info.ucl.ac.be> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <3E7F5E33.4020709@info.ucl.ac.be> List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Nicolas Vanderavero Cc: reiserfs-list@namesys.com Nicolas Vanderavero wrote: > Hello, Hello Nicolas, > > > while reinstalling a Debian on a new hard drive, I made the mistake to > format in reiserfs my good old /home which was on /dev/sda7 instead of > formatting the new /dev/hda7. Gasp ! Eight gigabytes lost ... > > Or ... maybe it was not totally lost :-) I immediately made a dump of > the partition with 'dd' and started grepping some known text on it. It > seemed that no data was really lost. I didn't know what to do. So I > read the man pages and found the reiserfsck command quite interesting :-) You have lost the super block and probably old root node. I said "probably" because it might be not used in teh time you did format. > > > Ok, I am a total newbie to filesystems and to ReiserFS. So maybe it > will sound trivial to you, but just in case it happens to anyone else, > I just wanted to say that running a reiserfsck --rebuild-tree -S on my > partition was enough to unformat it. I ended up with some file in > lost+found, but a 'file *' is enough to discover what they are. The first thing you should do in cases like this is to make backup. I hope you'll find eight gigabytes for that. Now you may feel free to do anything with you old partition. Then you should to do --rebuild-sb and try to fsck the partition with --check key. Then follow to fsck sugestions. These should be enought for getting you partition back. > > > So, maybe it would be usefull to add an entry in the "Example of > using" section of the man page of reiserfsck, saying something like : > "If you reformatted by mistake a reiserFS partition, you can try to > unformat it by running reiserfsck --rebuild-tree -S on it". Sounds good. Probably Vitaly should consider about that for including it in the next fsck -pre. > > > Anyway, thank you for developing this filesystem. > Nicolas Vanderavero. > > > > > > P.S. Please read http://www.namesys.com/support.html. Can you as for support? -- Yury Umanets