[OpenIndiana-discuss] What is the rpool/dump fs?

[Toomas Soome]

> On 12. May 2022, at 14:59, hput via openindiana-discuss <openindiana-discuss at openindiana.org> wrote:
> 
> Toomas Soome via openindiana-discuss
> <openindiana-discuss at openindiana.org> writes:
> 
> 
>>> Sorry for the lammer question.  Not finding the info that explains it
>>> easily.  Some with just a pointer, url or the like.
>>> 
>>> What does it do?  How should I handle it when replicating an oi
>>> backup server... no backups on it at the moment so thought I might
>>> replicate rpool .. I am excepting rpool/swap and possibly rpool/dump
>>> Depending how important to the other zfs fs it is.
> 
> Toomas S. wrote:
> 
>> See man dumpadm.
> 
> Well I went thru it after your comment but I don't feel much wiser for
> it.
> 
> Off hand it seems to not be important for a replication backup to
> include.  Only if there has been a crash dump of concern.  Even then
> still seems unneccesary for job of recreating a healthy OS from
> backup.  Still it is really not much data.  In my case its reported
> 6.64 GB, so might as well include in a replication backup eh?
> 

This is zvol for storing kernel dump in case of panic. You do not need to store it’s content, but in case of system restore, you want to restore the zvol (that is, document the zvol size and volblocksize). Same does apply to rpool/swap - no point to backup it’s content, but do record the size and volblocksize for the case of system restore.

rgds,
toomas