Date: Sat, 28 Feb 1998 14:21:35 -0800 (PST) From: Simon Shapiro <shimon@simon-shapiro.org> To: sbabkin@dcn.att.com Cc: hackers@FreeBSD.ORG, blkirk@float.eli.net, jdn@acp.qiv.com, grog@lemis.com, wilko@yedi.iaf.nl Subject: RE: SCSI Bus redundancy... Message-ID: <XFMail.980228142135.shimon@simon-shapiro.org> In-Reply-To: <C50B6FBA632FD111AF0F0000C0AD71EE4132C6@dcn71.dcn.att.com>
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On 28-Feb-98 sbabkin@dcn.att.com wrote: >> ---------- >> From: Greg Lehey[SMTP:grog@lemis.com] >> >> > I think Julian's SLICE code has something in that direction. DPT >> > supports INCREASING the size of a RAID-5 array by adding drives. >> >> How can that work? >> > Something like > - read N RAID blocks from K disks > - compute new checksum for K+1 disks and write as less number > of RAID blocks but each one of bigger size (K+1/K times) > - add empty blocks at the end of RAID in the added space > > What am I wondering is why nobody did that before ? It's so boring > to rebuild the whole RAID if all you want is to add or remove a disk. Like I said; More than one way to skin a cat. I still prefer to have someone else do it for me (who is beter, etc.), but this is only me. We can always do all this in the O/S kernel... ---------- Sincerely Yours, Simon Shapiro Shimon@Simon-Shapiro.ORG Voice: 503.799.2313 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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