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- Path: sparky!uunet!olivea!sgigate!odin!chaos.boston.sgi.com!rc
- From: rc@chaos.boston.sgi.com (Roger Corron)
- Newsgroups: comp.sys.sgi
- Subject: Re: Seeking info on logical volumes
- Message-ID: <1993Jan22.221511.10774@odin.corp.sgi.com>
- Date: 22 Jan 93 22:15:11 GMT
- References: <35072@adm.brl.mil> <3303@contex.contex.com>
- Sender: news@odin.corp.sgi.com (Net News)
- Organization: Silicon Graphics, Inc.
- Lines: 45
- Nntp-Posting-Host: chaos.boston.sgi.com
-
- Shrinkfs would be nice. But if you have the opportunity to plan ahead,
- you can probably do without it.
-
- First, it helps if you don't set up /usr as a logical volume. You can
- often relocate directories onto other disks and set up symlinks to them.
- Among SGI products, WorkShop, Insight, and Explorer are explicitly designed
- for this. In fact, Insight will read from its installation CDROM. Since inst
- is smart enough to follow symlinks, you could move things like /usr/src and
- /usr/catman elsewhere. On my own system, /usr/people, /usr/Insight, and
- /usr/WorkShop have been on a seperate disk for weeks. It works fine.
-
- Second, if you must expand /usr, why not set aside a partition or two?
- Set aside partition 1 on one or two of the disks in your volume for future
- swap expansion. To paraphrase Captain Montgomery Scott, if you want your
- boss to think of you as a miracle worker, you have to keep some reserves.
-
- Expanding /usr does carry some risk. Once it's done, you must depend on
- the well-being of more than one disk. If there is a problem with any disk,
- you may have your data backed up, but you will have to fix the problem
- in single user mode or in the miniroot. Shrinkfs wouldn't change the risk,
- although it would increase your flexibility.
-
- Roger Corron
-
- In article <3303@contex.contex.com>, frank@marvin.contex.com (Frank Perdicaro) writes:
-
- |> The only thing I need is the ability to reconfigure logical volumes
- |> when subtracting disk partitions, disks, or shrinking file system
- |> size, and thereafter shrinkfs(1).
- |>
- |> The typical problem is like this. User has one disk with root, swap,
- |> and /usr. His demands grow, so he buys n extra disks and grows the
- |> /usr filesystem on to them. His demands grow more, and he wants more
- |> swap space. Now the huge /usr fs has to be backed up, deleted, the
- |> swap grown, and the /usr lv&fs remade and re-loaded.
- |>
- |> It sure would be nice if one could do a shrinkfs(1) on /usr, fx the
- |> swap parameters, and reboot. Can we have it in IRIX 5.1?
- |>
- |>
- |> --
- |> Frank Evan Perdicaro Xyvision Color Systems
- |> Legalize guns, drugs and cash...today. 101 Edgewater Drive
- |> inhouse: frank@marvin, x5572 Wakefield MA
- |> outhouse: frank@contex.com, 617-245-4100x5572 018801285
-