Your 2.2T array is not as big as you think! 1TB = 2^40 not 1*10^12 Maybe depending on if you are buying disk drives, or selling them! :) But when related to the 2TB limit it is 2^40. 2206003968 blocks Divide by 1024 gives you 2154300.75 meg Divide by 1024 gives you 2103.8093 Gig Divide by 1024 gives you 2.0545 TB So you are just over 2TB. by 58520320 blocks or 55.8 Gig. The only reason I am being exact is that you have not tested disk I/O beyond 2TB as much as you think. Once, someone else made a similar 2T claim, after the math he was really below 2T. Guy -----Original Message----- From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of Brad Campbell Sent: Sunday, November 28, 2004 5:58 AM To: Stephan van Hienen Cc: linux-raid@xxxxxxxxxxxxxxx Subject: Re: raid5 code ok with 2TB + ? Stephan van Hienen wrote: > in the past the raid5 code was 32bits internal > and the limit was 2TB > > is this fixed in the 2.6.x ? I hope so, I have been using it on a 2.2TB raid-5 for months now. (I have completely filled the partition and e2fsck it monthly so I would hope any glitches should have surfaced by now) brad@srv:~$ cat /proc/mdstat Personalities : [raid0] [raid5] [raid6] md2 : active raid5 sdl[0] sdm[2] sdk[1] 488396800 blocks level 5, 128k chunk, algorithm 2 [3/3] [UUU] md0 : active raid5 sda1[0] sdj1[9] sdi1[8] sdh1[7] sdg1[6] sdf1[5] sde1[4] sdd1[3] sdc1[2] sdb1[1] 2206003968 blocks level 5, 128k chunk, algorithm 0 [10/10] [UUUUUUUUUU] -- Brad /"\ Save the Forests \ / ASCII RIBBON CAMPAIGN Burn a Greenie. X AGAINST HTML MAIL / \ - 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 - 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
