[pca] Install patches on secondary submirror

[Bleek Thomas]

Hello,

you really should take the lu way. it is working great.

if this is an important system you should test the procedure (lu or  
splitting mirror) on another system.

if you do the split, you should think of /etc/system (look at the last  
lines) and also of the *.cf files in /etc/lvm/.

before switching to lu 2 years ago I did the following:

1. split the mirror
2. fsck the new root
3. mount it and edit vfstab
4. deleteing the last lines in /mnt/etc/system
5. deleting *.cf in /mnt/etc/lvm/
6. patching

the main disadvantage is, that you have to create the mirror again  
(additional reboot).

I'm sure, that there is a  more elegant way to do this, but it has  
worked for me.

Once more:

Take LU!

If you need assistance with lu, write directly,
thomas
p.s.: smartphone users will hate you if you are NOT top-posting:-)


Am 09.10.2009 um 19:03 schrieb Asif Iqbal:

> Hi All
>
> I want to install patches on secondary submirror on this box. I  
> could use lu to setup an ABE and then mount that and install patch  
> on that.
> However, if I don't want to worry about installing lu and  
> recommended lyu patches, I could just detach the secondary submirror  
> and mount
> that and install patch on that as well. Then modify the vfstab on  
> the secondary submirror and just boot from that.
> Has anyone done it with detail/complete steps?
>
> Here is how my SVM looks like
>
> (root)@myhost:~# metastat -p
> d0 -m d20 d10 1
> d20 1 1 c1t1d0s0
> d10 1 1 c1t0d0s0
> d1 -m d11 d21 1
> d11 1 1 c1t0d0s1
> d21 1 1 c1t1d0s1
>
> (root)@myhost:~# metadb
>         flags           first blk       block count
>      a m  p  luo        16              8192            /dev/dsk/ 
> c1t0d0s6
>      a    p  luo        8208            8192            /dev/dsk/ 
> c1t0d0s6
>      a    p  luo        16400           8192            /dev/dsk/ 
> c1t0d0s6
>      a    p  luo        16              8192            /dev/dsk/ 
> c1t1d0s6
>      a    p  luo        8208            8192            /dev/dsk/ 
> c1t1d0s6
>      a    p  luo        16400           8192            /dev/dsk/ 
> c1t1d0s6
>
> So I can just detach the d20, and remove the metadb c1t1d0s6, and  
> mount it and change the vfstab and systems file.  use eeprom to make  
> c1t1d0s0 as
> the correct boot-device root.  Then install patch on that using pca  
> and boot from it. That should work, correct?
>
> Lets say I mount d20 on /mnt. So can I patch that like this?  pca  - 
> a -i mrs -R /mnt ?
>
> my /var, /opt and /usr are part of root /
>
> (root)@myhost:~# df -h /var
> Filesystem             size   used  avail capacity  Mounted on
> /dev/md/dsk/d0         9.8G   5.5G   4.2G    57%    /
> (root)@newsunray:~# df -h /opt
> Filesystem             size   used  avail capacity  Mounted on
> /dev/md/dsk/d0         9.8G   5.5G   4.2G    57%    /
> (root)@newsunray:~# df -h /usr
> Filesystem             size   used  avail capacity  Mounted on
> /dev/md/dsk/d0         9.8G   5.5G   4.2G    57%    /
>
>
> -- 
> Asif Iqbal
> PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
> A: Because it messes up the order in which people normally read text.
> Q: Why is top-posting such a bad thing?
>
>

--
Dr. Thomas Bleek, Netzwerkadministrator
Helmholtz-Zentrum Potsdam
Deutsches GeoForschungsZentrum
Telegrafenberg G261
D-14473 Potsdam
Tel.: +49 331 288- 1818/1681 Fax.: 1730 Mobil: +49 172 1543233
E-Mail: bl at gfz-potsdam.de

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