Solaris 2.6 swap/dump device Veritas VxVM question
2007-12-25 9:23:00
Resolution:
Patch 107490 fixes the 2GB swap limit it Solaris 2.6.
VxVM is probably not the problem here.
Brendan
> -----Original Message-----
> From: Brendan Choi [mailto:bchoi@best.com]
> Sent: Wednesday, February 23, 2000 7:14 AM
> To: sun-managers@codeprof.ececs.uc.edu
> Subject: Solaris 2.6 swap/dump device Veritas VxVM question
>
>
>
> Question: Under Solaris 2.6, when all your swap devices are Veritas
> volumes, and they are over 2GB in size, does this eliminate savecore's
> ability to get a core dump from the swap space?
>
> I have an E4500 running Solaris 2.6, 5GB RAM, and Veritas VxVM 2.5.
>
> My **only** 2 swap devices are Veritas volumes, which are
> outside the root
> disk. Each volume has 2 plexes, each 4GB in size. All my
> disks are 4GB in
> size.
>
> swap -l shows:
>
> swapfile dev swaplo blocks free
> /dev/vx/dsk/swap01 87,7 16 4194272 4194272
> /dev/vx/dsk/swap02 87,10 16 4194272 4194272
>
> This shows the swap volumes are 2GB in size. I think this is has to do
> with the Solaris 2.6 limitation on swap devices.
>
> When the E4500 boots up, I get these console messages:
>
> From Solaris:
> dump on /dev/dsk/c2t4d0s4 size 2097040K
>
> From Veritas:
>
> vxvm: WARNING: No suitable partition from <some
> volume...forgot which it
> said> to set as the dump device.
>
>
> Veritas VxVM's "vxprint -ht" shows my swap plexes correctly
> as 4GB each in
> size.
>
> v swap01 gen ENABLED ACTIVE 8378368 SELECT -
> pl swap01-01 swap01 ENABLED ACTIVE 8378640 CONCAT -
> RW
> sd disk01-01 swap01-01 disk01 0 8378640 0
> c2t4d0
> ENA
> pl swap01-02 swap01 ENABLED ACTIVE 8378640 CONCAT -
> RW
> sd disk03-01 swap01-02 disk03 0 8378640 0
> c2t8d0
> ENA
>
> v swap02 gen ENABLED ACTIVE 8378368 SELECT -
> pl swap02-01 swap02 ENABLED ACTIVE 8378640 CONCAT -
> RW
> sd disk02-01 swap02-01 disk02 0 8378640 0
> c2t5d0
> ENA
> pl swap02-02 swap02 ENABLED ACTIVE 8378640 CONCAT -
> RW
> sd disk04-01 swap02-02 disk04 0 8378640 0
> c2t9d0
> ENA
>
>
> Under this situation, will savecore fail?
>
> It seems that Solaris can use 2GB of each 4GB swap device,
> but savecore
> doesn't seem to care and only "sees" the entire 4GB on the
> device so it
> won't work. Am I right?
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