> > Data Offset : 272 sectors > > Super Offset : 8 sectors > > The above two items are what you need for both version 1.1 and 1.2 > superblocks in order to figure things out. The data, aka the filesystem > itself, starts at the Data Offset which is 272 sectors. The superblock > itself is 8 sectors in from the front of the disk because you have > version 1.2 superblocks. So, 272 - 8 - size of the superblock, which is > only a sector or two, is how much internal space you have. So, in your > case, you have about 132k of space for the bitmap. OK. The 10 drive system shows: bitmap: 0/466 pages [0KB], 1024KB chunk The 7 drive system shows: bitmap: 0/350 pages [0KB], 2048KB chunk So you think I should remove both and replace them with mdadm -G /dev/md0 --bitmap=internal --bitmap-chunk=65536 ? While most of the files are large video files, there are a fair number which are smaller data files such as those of the IMAP server and Quicken. I don't want performance to be too terrible for them, either. -- 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
