Are filesystems and interfaces local to each filer, even when clustered? Or, when clustered, does each filer shares the filesystems?
Specifically, if I have filers A and B, and I run "df" and "ifconfig" against each filer:
Do they return the same outputs?
Or, does each filer retain its identity when clustered? So, /vol/vol0 and all other filesystems on filer A is different than /vol/vol0 and all other filesystems on filer B?
Does it matter what mode I am in? Takeover, Cf Disabled, etc?
So essentially, what I am asking is: Is each filesystem identifiable by it's Filer Serial number AND File system name? Or, by it's Cluster and File System name?
Thank you all!
Are filesystems and interfaces local to each filer, even when clustered? Or, when clustered, does each filer shares the filesystems?
Local to each filer.
Specifically, if I have filers A and B, and I run "df" and "ifconfig" against each filer:
Do they return the same outputs?
No.
Or, does each filer retain its identity when clustered? So, /vol/vol0 and all other filesystems on filer A is different than /vol/vol0 and all other filesystems on filer B?
Yes.
Does it matter what mode I am in? Takeover, Cf Disabled, etc?
After a takeover, the two filers still have independent identities. A single hardware head is pretending to be two different filers. To clients, it still looks like two separate filers.
So essentially, what I am asking is: Is each filesystem identifiable by it's Filer Serial number AND File system name? Or, by it's Cluster and File System name?
The filer and filesystem name uniquely identify the filesystem.
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
Are filesystems and interfaces local to each filer, even when clustered? Or, when clustered, does each filer shares the filesystems?
Its not a cooperative cluster -- just failover. In normal operation, they act like two standalone filers, albeit with half the write cache. When a failure occurs, the surviving partner adopts the identity of the dead one and acts on its behalf (you can switch the perspective of the cli with 'partner', after which it looks as if you were connected to the dead partner).
Specifically, if I have filers A and B, and I run "df" and "ifconfig" against each filer:
Do they return the same outputs?
Nope. There will be a 'partner' address listed on each interface which would be the addr of the partner to be used if it fails.
So essentially, what I am asking is: Is each filesystem identifiable by it's Filer Serial number AND File system name? Or, by it's Cluster and File System name?
filesystems are unique to filers. filer1:/vol/vol9 will never also be filer2:/vol/vol9 -- when filer1 dies, filer2 will become filer1 (with all of its addresses and filesystems) as well.
..kg..
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Julius Talbot -
kevin graham -
Steve Losen