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Fixes for MFSTools 2.0 swap problems

Discussion in 'TiVo Upgrade Center' started by Robert S, Jul 31, 2002.

  1. Jorossian

    Jorossian New Member

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    Oct 6, 2002
    Rochester, NY
    Great stuff Rob. I've copied your updated instructions for future reference. So all this crap has been caused because of using "128" instead of "127". Glad to see my Hinsdale's directions are already updated and free of that problem.

    I feel a lot better about using Tiger's MFS Tools 2.0 to do this now. Unfirtunately my 120 Gig hard drive still hasn't arrived. I may have to put this off until next weekend.

    Here's a new question.

    If I simply move the image of my A drive to the new larger drive + expand it and keep the original A out of the unit for a while until I'm sure everything's "kosher"......... Will I lose more usable space when I eventually add the original 40 gig A drive (now B) to the new 120 A ? And does the addition of the original A count as another "upgrade" essentially putting my overall TiVo setup at 2 upgrades with possibly one more possible upgrade left?

    I guess what I'm getting at is, am I better off putting in 2 new hard drives all at once NOW rather than one now and one in another month or so?
     
  2. Tiger

    Tiger TMNBT Special Forces

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    Aug 15, 2000
    There is no difference as to the number of upgrades of putting a drive in now or later. The number of upgrades counts each drive upgraded, so in both cases larger A + new B (Now or later) is 2 upgrades. Also the limit isn't necessarily 3, that is just worst case scenerio. You can have a total of 6 MFS sets. Standalone series 1 has 1 set in most case. Dual drive combo has 3. Single drive combo and series 2 standalone have 2. So larger A and new B gives you a chance to upgrade both drives one more time. (Though you have to do both at the same time if you want to use both upgrades, as it will need to shuffle partitions around)
     
  3. Jorossian

    Jorossian New Member

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    Oct 6, 2002
    Rochester, NY
    Appreciate that Tiger. Thanks for the great software.
     
  4. comfysofa

    comfysofa New Member

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    Sep 24, 2002
    UK
    hmmmm - well because nothing happened on the first night i tried i took the discs and stretched the filesystem over the new disc which took me to 314 hours........so - assuming i still have the old swap size - (gotta wait for the wife to finish with the tivo) ill check the logs - think you need a reboot first.......can the adjustments be made from a telnet session (without the need to take it apart).......
     
  5. Robert S

    Robert S New Member

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    Jul 8, 2002
    Cambridgeshi...
    There's no room to add more swap. It's best to do it at the mfsrestore stage.
     
  6. rdangel

    rdangel Member

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    Sep 3, 2002
    Robert S:
    I had a previously upgraded Phillips 20 hr. Added an 80 GB B drive using blesstivo and have been fine for a while. Recently decide to change out the 20 GB A drive for a 120GB A drive.

    Did the upgrade,everything is fine. Have been using the tivo for a few days now. Read over your manually adding swap file thread and have a question. Will this creating procdure damage the married drives at all? Will I just be able to add/create/expand the swap without losing my recordings, breaking the marrying etc?

    I have been noticing that the a drive locks and I keep having to run qunlock.

    Any help would be appreciated.
    Thanks
     
  7. Robert S

    Robert S New Member

    9,725
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    Jul 8, 2002
    Cambridgeshi...
    The procedure for adding extra swap manually has been tested and seems to be working well for people. You need to do it between dd'ing the drive on to the new one and using mfsadd to expand the image. If you've already expanded you can't expand your swap and will have to use the 'rescue' procedure if your TiVo ever green screens.

    The 'marriage' is transferred when you use dd to copy the drive. changing the swap partitions around doesn't affect the MFS partitions where your recordings are. mfsadd adds extra space without damaging the recordings already on the disks.

    TiVo will relock the drive it you boot it. qunlock is only a 'permanent' unlock in the sense that it won't relock in a PC (the distinction is actually against dlgchk.exe which only unlocks the drive until you turn the power off).
     
  8. rjbutler

    rjbutler ...

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    Mar 25, 2002
    I upgraded my DirecTivo B drive to a 160GB Maxtor some time ago and ended up with a 64M swap. Lately, I've noticed very slow responses, occassional audio drops during playback and sometimes video dropouts on recordings on days there should not be rain fade problems.

    Is it likely the small swap partition is the cause of these problems or is theresomething more serious wrong?

    I've scanned through this topic and I *think* I can increase the swap to 128M using option #3 in the first message:

    3. Use copy of mkswap on tools CD

    Boot a TiVo boot CD (but not the MFS Tools 2.0 CD) and do

    /sbin/mkswap -v0 /dev/hdc8


    Is my interpretation correct? Will this effect my recordings?

    Thanks
     
  9. Robert S

    Robert S New Member

    9,725
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    Jul 8, 2002
    Cambridgeshi...
    Wrong on both counts, I'm afraid. The increased swap is only relevent when your TiVo undergoes a 'green screen' file system corruption error. You need relatively little swap at other times - probably less than 20Mb would be fine for normal operations. A DTiVo might even be OK with no swap at all.

    You can't increase swap because you've got no where to put it - the 4 procedures in the first post assume you've got a 128MB partition that hasn't been initialised by MFS Tools 2.0 (which happens if you upgrade with -s 128 as suggested by the MFS Tools 2.0 documentation).

    You will want to take note of the next post which describes how to temporarily increase swap to help your TiVo recover from a green screen of death.

    Your playback problems are probably due to a failing disk. You might want to run PowerMax on your drives to see if it can identify which one has the problem.
     
  10. rjbutler

    rjbutler ...

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    Mar 25, 2002
    I used MFS Tools 2.0 soon after it came out, before the swap issue was discovered. I don't recall if I used -s 128, I followed the Hinsdale instructions for a 2 drive DTivo, upgrading the B drive only.

    The logfile reports a 64M partition.

    I guess I'll try PowerMax this weekend to see if I've got a bad drive.

    Thanks for the info.
     
  11. boobili

    boobili New Member

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    Oct 25, 2002
    Hi Robert. I might have missed it reading thru this long post. If I had, please forgive me. In your initial post, you described how to recover from the GSD, using a working shell on the TIVO. I am in such a situation. I have the GSD that has not resolved itself for several days, yet I have a working telnet. Can you go into more detail on how to fix the GSD problem under these conditions? Thank you. B
     
  12. Robert S

    Robert S New Member

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    Jul 8, 2002
    Cambridgeshi...
    The fix applies only if the GSOD is running out of swap - if it reboots a few seconds after going to green, then the fix will help. If the green screen is staying up, then you already have plenty of swap.

    Search back through my posts yesterday and you'll see a discussion with someone else trying to do the rescue on the TiVo. In my opinion, it would be much easier to follow the rescue plan in the third post of this thread, even though that does mean opening your TiVo and PC.
     
  13. jeffster

    jeffster Member

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    Feb 18, 2001
    Southlake, TX
    Robert,

    Which of the (#2 & 3) options mentioned at the top of the thread for rescuing DTivos is the best?

    I have a SAT-T60 that was just upgraded to 220GB, and got it home to see the green-screen reboot loop.

    I'm not the one doing this (I haven't used unix since grad school), so I'll need to point the directions out to someone else who's not going to scan the whole thread.

    TIA,
     
  14. Robert S

    Robert S New Member

    9,725
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    Jul 8, 2002
    Cambridgeshi...
    The four options in the first post are for repairing TiVoes with no swap (if you actually read the post, this will become clear to you). The rescue is in the third post, and there really is only one way of doing it.
     
  15. jeffster

    jeffster Member

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    Feb 18, 2001
    Southlake, TX
    Okay, my DTive SAT-T60 with a 100+120 has been in mfsfix (green screen) recovery mode for about 3 hours now.

    How long should I expect it to run?

    (The green screen came up the minute I added the 120, so only the 100 actually had any video on it.)
     
  16. jeffster

    jeffster Member

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    Feb 18, 2001
    Southlake, TX
    I had only to ask. Now it's done.

    Odd thing -- I lost 40 hours of programming (now just 205 available, said 240 before the mfsfix run).
     
  17. bonurn

    bonurn New Member

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    Aug 27, 2002
    Northern...
     
  18. Dec 1, 2002 #278 of 609
    Eccles

    Eccles Mostly harmless

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    Dec 27, 2001
    Austin, TX
    How can I (or can I at all) get the MFS Tools 2.0 boot floppy to boot in byteswapped mode? I've spent the past couple of hours trying all manner of convolutions, because the lame old PC I'm using for the task cannot boot from CD and when I boot from the floppy I don't (appear to) get a chance to specify any parameters; there's no boot: prompt, it just starts loading.

    From what I read here, this is not a barrier to performing a copy&expand, so I'm going to go ahead and get that going before I go to bed, but it would be nice to be able to make a backup of the old A drive at some point as well.

    Is there a non-byteswapped 2.0 floppy image available anywhere?
     
  19. Dec 1, 2002 #279 of 609
    stormsweeper

    stormsweeper How *you* doin'?

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    Nov 27, 2001
    NYC, USA
    You can use MFS Tools completely in non-byteswapped mode. You only need to use byteswapping if you're modifying files (say to set up a bash terminal) on a Series 1 machine.
     
  20. Dec 1, 2002 #280 of 609
    Eccles

    Eccles Mostly harmless

    350
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    Dec 27, 2001
    Austin, TX
    Yeah, I guess I was doing things wrong. I thought I only needed to backup my A drive since that was the only one I was expanding, but in retrospect I see I needed to mounts both A and B to create the backup. My bad. Thanks.
     

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