Hi, I've been noticing an unexpected behaviour on some Journaled RAID6 (without a bitmap) after a power failure: Upon re-assembling the array, sometimes a full rebuild of the RAID occurs. It is possible that one of the drive superblock was not fresh (e.g. drive failure because of a cable or IO controller event) on one or more of the drives. Still, I assumed that since MD knows about every pending write to the array as stored in the Journal, it would only "replay" the journal and flush pending writes, not needing a full rebuild, regardless of the RAID state (even when dirty degraded). I was also surprise to find that I could create a Journaled RAID with an internal bitmap also: wouldn't the journal supersede the bitmap, as it records pending writes on a per stripe basis, as opposed to a bitmap region? Thanks in advance for helping me clarifying this point. Ben. -- CONFIDENTIALITY This e-mail message and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail message, you are hereby notified that any dissemination, distribution or copying of this e-mail message, and any attachments thereto, is strictly prohibited. If you have received this e-mail message in error, please immediately notify the sender and permanently delete the original and any copies of this email and any prints thereof. ABSENT AN EXPRESS STATEMENT TO THE CONTRARY HEREINABOVE, THIS E-MAIL IS NOT INTENDED AS A SUBSTITUTE FOR A WRITING. Notwithstanding the Uniform Electronic Transactions Act or the applicability of any other law of similar substance and effect, absent an express statement to the contrary hereinabove, this e-mail message its contents, and any attachments hereto are not intended to represent an offer or acceptance to enter into a contract and are not otherwise intended to bind the sender, MPSTOR, or any other person or entity. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
