Recover data on file system error on linux

[linux]

One of our Linux server run into problem and mounted all file systems readonly. And, unfortunately, We lost lots of data when we did a "fsck -y". Run a "ls" command on /var and /usr/lib lists out nearly nothing.

Worst of that, it was a database server and one of our databases didn't have any backup!! Cry cry!!

Anyway, we need to re-build the server. It's not hard since it was a Xen DomU and we just create a new one. But we still want to see how much data can be recovered.

cd into the famous lost+found, ls can list some dirs prefixed with #, then I run a find to get a list of all files: cd /lost+found find . ./#975072/addons ./#975144 ./#975144/dhclient.leases ./#975284 ./#975348 ./#975348/supported.d ./#975348/supported.d/en ./#975460 ./#975474 ./#975474/kmsg ./#1130956 ./#1130956/dn2id.bdb ./#1130956/log.0000000003 ./#1130956/log.0000000001 ./#1130956/log.0000000008 ./#1130956/log.0000000005 .

Even we can get some data back, we didn't recover our database. Fortunately we have db dumps for other databases... Backup is always important!

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