Re: On URE and RAID rebuild - again!
From: Gionatan Danti <hidden>
Date: 2014-07-31 07:16:24
From: Gionatan Danti <hidden>
Date: 2014-07-31 07:16:24
Yes, you can usually get your data back with mdadm. With latest code, a URE during recovery will cause a bad-block to be recorded on the recovered device, and recovery will continue. You end up with a working array that has a few unreadable blocks on it. NeilBrown
This is very good news :) I case of parity RAID I assume the entire stripe is marked as bad, but with mirror (eg: RAID10) only a single block (often 512B) is marked bad on the recovered device, right? From what mdadm/kernel version the new behavior is implemented? Maybe the software RAID on my CentOS 6.5 is stronger then expected ;) Regards. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti@assyoma.it - info@assyoma.it GPG public key ID: FF5F32A8