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Re: Removing disks from a volume
by Rick Hulsey 22 Aug '00

22 Aug '00

You've probably already thought about this, but could you just steal a spare from the other filer, or buy another disk to use as a spare? If the spare disk was your last spare in the filer and you can't buy or steal another spare or it forces you to another shelf, then it's worth going through this process. Otherwise you may want to just not mess with it. If you do have to deal with the problem by copying and recreating the volume, it seems like you ought to be able to get that downtime window to be smaller if you use snapmirror to mirror your problem volume to the new volume in the other filer. This at least cuts down on the time it takes to do the first copy. >>> Aaron Sherman <ajs(a)ajs.com> 08/21/00 10:46PM >>> On Mon, Aug 21, 2000 at 10:23:13PM +0100, Mark Simmons wrote: > The real secret to this is re-laying out the filesystem data and altering > and relaying out the metadata, which is why AFAIK, only VxFS can do this > at the moment - it's perceived to be both hard and uncommon (despite > all sysadmin's experiences to the contrary, and the manifest existence > of fs-reorganisers) so most fs authors don't bother. Just in case a) this is what's being thought and b) there's anyone from NetApp listening: THIS WOULD NOT JUST BE A COOL FEATURE... IT WOULD SAVE ME DAYS OF EFFORT. You see, our database is on that volume, so we have to schedule database downtime, copy the data to a second filer (lucky we have one, or this'd be to tape!) and then back. It's probably going to be 1-3 hour process which will suck up our downtime window for a whole week! -- Aaron Sherman Systems Architect HighWired.com -- The global high school community http://www.highwired.com 300 North Beacon Street Watertown, MA 02472 (617) 926-1850 x238 (617) 926-1861 fax asherman(a)highwired-inc.com / ICQ#43677395 / Y!ajstrader "We had some good machines, but they don't work no more." -"Faded Flowers" / Shriekback

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RE: RCS issues with ONTAP 5.4.3R2
by Clawson, Simon 22 Aug '00

22 Aug '00

Sniff is produced by a company called MKS. I dont know if they have a web site, but we get our licenses etc through wind river. Bye Simon -----Original Message----- From: Todd C. Merrill [mailto:tmerrill@mathworks.com] Sent: 21 August 2000 20:29 To: 'Clawson, Simon' Subject: RE: RCS issues with ONTAP 5.4.3R2 On Thu, 17 Aug 2000, Muhlestein, Mark wrote: > This is likely bug #21019, fixed in 5.3.5. Check with NetApp support to get the > exact recommended version, since the fix exists in many releases. Simon, Darn it. If I had read the description of bug 21019, I wouldn't have needed to post my wild-ass guesses. I filed that bug. ;) That bug was a re-introduction of bug 7111, which a former admin of our company filed years ago; it apparently got reintroduced into the code base for ONTAP when another much *larger* customer of NetApp's demanded it work *their* way, not according to the UNIX-style semantics. The option cifs.perm_check_ro_del_ok then got created to fix 21019 (and 7111, *again*) to make it work as it should. So, this product...Sniff, who makes it? We haven't found an RCS tool for pc's that doesn't corrupt our RCS files, but I haven't heard of this one yet. Until next time... The Mathworks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill(a)mathworks.com http://www.mathworks.com ---

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Re: Removing disks from a volume
by Eyal Traitel 22 Aug '00

22 Aug '00

It surely would. It was down in a shutdown of the company. eT. --- James R Grinter <jrg(a)acm.org> wrote: > On Mon, Aug 21, 2000 at 02:28:46PM -0700, Eyal Traitel wrote: > > - About your specific problem - easy fix - just create new volume > > with two disks. mount it. Use a tool like rsync to copy all the > /etc > > to the new volume. > > Wouldn't that have implications for NFS Clients that have mounted > the file system and/or have files open? I'm thinking here of the > values inside the opaque (to the client) NFS file handles. > > James. ===== Yours, Eyal Traitel eTraitel(a)yahoo.com, Home: 972-3-5290415 (Tel Aviv) *** eTraitel - it's the new eBuzzword ! *** __________________________________________________ Do You Yahoo!? Yahoo! Mail � Free email you can access from anywhere! http://mail.yahoo.com/

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Re: Removing disks from a volume
by Eyal Traitel 21 Aug '00

21 Aug '00

- The only "plex" I can think of in VxFS is "complex"... :) - I believe that this shrinking has very strict demands - you must defrag first, have enough space of course, and it probably takes hours... - A filer tries to distribute data over the spindles, so it makes it hard I believe. Anyway, you have the option to create large volumes, and seperate them logically to easily growing/shrinking qtrees, which are like filesystems. - About your specific problem - easy fix - just create new volume with two disks. mount it. Use a tool like rsync to copy all the /etc to the new volume. Run "rsh toaster0 vol offline myoldroot" - this is for taking it offline during the reboot (NOT NEEDED IN 6.0!!!). Run "rsh toaster0 vol options mynewvolume root" and then after one last rsync reboot. There you have it. It was done on a production system by myself - no problem. After some time you can of course issue: "rsh toaster0 vol destroy myoldroot" to erase volume. eT. --- Aaron Sherman <ajs(a)ajs.com> wrote: > On Mon, Aug 21, 2000 at 12:38:40PM -0700, Eyal Traitel wrote: > > It would be lovely if there was such a RAID-filesystem... > > If anyone have heard of such - share with us... > > As noted by another, Veritas is capable of this. I've included an > excerpt from the docs, below: > > [begin vxassist man-page] > NAME > vxassist - create, mirror, backup, grow, shrink, and move > volumes > [...] > shrinkto and shrinkby > Decrease the length of the named volume to the length > specified by newlength (shrinkto), or by the length > specified by lengthchange (shrinkby). The new length > or change in length is specified as a standard Volume > Manager length [see vxintro(1M)]. The shrinkto opera- > tion fails if the new length is not less than the > current volume length. > [...end] > > Of course, this only shrinks the whole volume, but it is my > understanding that at that point, you can re-arange the plexes so > that > the disk you want to remove no longer has any plexes on it. It's ugly > and complex, but possible. It strikes me as very strange that a > system > that's otherwise so flexible does not allow this. We've really hosed > ourselves because on one Filer (while attempting to set up a volume > that we could volcopy to), we accidentally added disks to the root > volume. So, now we have to do what? Re-install? > > -- > Aaron Sherman > Systems Architect > HighWired.com -- The global high school community > http://www.highwired.com > > 300 North Beacon Street > Watertown, MA 02472 > (617) 926-1850 x238 > (617) 926-1861 fax > asherman(a)highwired-inc.com / ICQ#43677395 / Y!ajstrader > > "We had some good machines, but they don't work no more." > -"Faded Flowers" / Shriekback ===== Yours, Eyal Traitel eTraitel(a)yahoo.com, Home: 972-3-5290415 (Tel Aviv) *** eTraitel - it's the new eBuzzword ! *** __________________________________________________ Do You Yahoo!? Yahoo! Mail � Free email you can access from anywhere! http://mail.yahoo.com/

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RE: Removing disks from a volume
by Francett, Robert D (SAIC) 21 Aug '00

21 Aug '00

Anyone actually done this? I tried once on Veritas V2.5.xx, something like that, and, although the docs indicate shrinkage is possible the s/w didn't allow the operation. I had to offload the data, remove the volume & start over. Now, this was Veritas on a Solaris machine. Bob Francett BP Exploration (Alaska) -----Original Message----- From: Aaron Sherman [mailto:ajs@ajs.com] Sent: Monday, August 21, 2000 12:48 PM To: Eyal Traitel Cc: toasters(a)mathworks.com Subject: Re: Removing disks from a volume On Mon, Aug 21, 2000 at 12:38:40PM -0700, Eyal Traitel wrote: > It would be lovely if there was such a RAID-filesystem... > If anyone have heard of such - share with us... As noted by another, Veritas is capable of this. I've included an excerpt from the docs, below: [begin vxassist man-page] NAME vxassist - create, mirror, backup, grow, shrink, and move volumes [...] shrinkto and shrinkby Decrease the length of the named volume to the length specified by newlength (shrinkto), or by the length specified by lengthchange (shrinkby). The new length or change in length is specified as a standard Volume Manager length [see vxintro(1M)]. The shrinkto opera- tion fails if the new length is not less than the current volume length. [...end] Of course, this only shrinks the whole volume, but it is my understanding that at that point, you can re-arange the plexes so that the disk you want to remove no longer has any plexes on it. It's ugly and complex, but possible. It strikes me as very strange that a system that's otherwise so flexible does not allow this. We've really hosed ourselves because on one Filer (while attempting to set up a volume that we could volcopy to), we accidentally added disks to the root volume. So, now we have to do what? Re-install? -- Aaron Sherman Systems Architect HighWired.com -- The global high school community http://www.highwired.com 300 North Beacon Street Watertown, MA 02472 (617) 926-1850 x238 (617) 926-1861 fax asherman(a)highwired-inc.com / ICQ#43677395 / Y!ajstrader "We had some good machines, but they don't work no more." -"Faded Flowers" / Shriekback

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Re: Removing disks from a volume
by Eyal Traitel 21 Aug '00

21 Aug '00

It would be lovely if there was such a RAID-filesystem... If anyone have heard of such - share with us... eT. --- Aaron Sherman <ajs(a)ajs.com> wrote: > We've accidentally added our spare disk to a volume. Our OEM says > that > this is irrevokable, and that we'll have to copy the volume to > another > disk tray, rebuild the volume and copy back in order to fix this. Is > that true? Is there no way to shrink a filesystem and remove a disk > once it's been added? > > It seem contrary to the ultra-flexible spirit of the Filers.... > > -- > Aaron Sherman > Systems Architect > HighWired.com -- The global high school community > http://www.highwired.com > > 300 North Beacon Street > Watertown, MA 02472 > (617) 926-1850 x238 > (617) 926-1861 fax > asherman(a)highwired-inc.com / ICQ#43677395 / Y!ajstrader > > "We had some good machines, but they don't work no more." > -"Faded Flowers" / Shriekback ===== Yours, Eyal Traitel eTraitel(a)yahoo.com, Home: 972-3-5290415 (Tel Aviv) *** eTraitel - it's the new eBuzzword ! *** __________________________________________________ Do You Yahoo!? Yahoo! Mail � Free email you can access from anywhere! http://mail.yahoo.com/

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Re: Removing disks from a volume
by mds＠gbnet.net 21 Aug '00

21 Aug '00

You can do it with a combination of VxVM and VxFS - and it's relatively simple too. The day the WAFL gets that feature, well, the VRTS solution won't look so simple anymore, of that I'm confident. (IF WAFL gets it, of course..) -- -Mark ... an Englishman in London ...

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Removing disks from a volume
by Aaron Sherman 21 Aug '00

21 Aug '00

We've accidentally added our spare disk to a volume. Our OEM says that this is irrevokable, and that we'll have to copy the volume to another disk tray, rebuild the volume and copy back in order to fix this. Is that true? Is there no way to shrink a filesystem and remove a disk once it's been added? It seem contrary to the ultra-flexible spirit of the Filers.... -- Aaron Sherman Systems Architect HighWired.com -- The global high school community http://www.highwired.com 300 North Beacon Street Watertown, MA 02472 (617) 926-1850 x238 (617) 926-1861 fax asherman(a)highwired-inc.com / ICQ#43677395 / Y!ajstrader "We had some good machines, but they don't work no more." -"Faded Flowers" / Shriekback

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RE: RCS issues with ONTAP 5.4.3R2
by Clawson, Simon 21 Aug '00

21 Aug '00

In answer to Todd's question: We use RCS as a backend to Sniff, on both UNIX & PC. The issue was correctl spotted by Mark. We have found that the bug mentioned did in fact cause our problems (prehaps Mark implemented the fix?) So if you are using source control, watch out! Cheers Mark et al for your advice and help with tis, it was kind of a major problem for us. Simon -----Original Message----- From: Todd C. Merrill [mailto:tmerrill@mathworks.com] Sent: 18 August 2000 21:50 To: Clawson, Simon Cc: toasters(a)mathworks.com Subject: RE: RCS issues with ONTAP 5.4.3R2 On Thu, 17 Aug 2000, Clawson, Simon wrote: > We went up from 5.2.3 to 5.3.4R2. The user working on UNIX boxes are able to > be checkout file with RCS exclusive locks. Users on PC's get "permission > denied" What RCS package are you using on the pc's? To what security mode is the filer set? > from RCS access. User can open and lock files on UNIX boxes OK. However on > PC, users cannot open and lock files that have been created by another user. Though a long-shot, does the output of `cifs sessions *` show any locks on files? Until next time... The Mathworks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill(a)mathworks.com http://www.mathworks.com ---

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Removal from mailing list
by Jouni Pohjola 21 Aug '00

21 Aug '00

Please remove me from the list. I am getting too much mails, I rather read these through Internet. Jouni Pohjola ProAct Datasystem Oy Sinimäentie 14 (Po.Box 45) 02630 Espoo Finland jouni.pohjola(a)proact.fi GSM +358-40-5641122

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