[9fans] keeping an eye on disk use

[9fans] keeping an eye on disk use

[John Floren]

Hello
I've got an older machine set up as a standalone cpu/auth/file server,
running fossil (20 GB) and no Venti. My question is, what is a good
way to keep an eye on disk usage? I know that 'df' in fossilcons will
show me the free/used disk space, but that's only accessable from the
console, and my machine is currently running headless. I'm looking for
something that I can run over drawterm to find out how much space is
being taken up (du / doesn't work, because that'll also count the
stuff in /mnt/term).
Thanks

John
-- 
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

Re: [9fans] keeping an eye on disk use

[Skip Tavakkolian]

> I've got an older machine set up as a standalone cpu/auth/file server,
> running fossil (20 GB) and no Venti. My question is, what is a good
> way to keep an eye on disk usage? I know that 'df' in fossilcons will
> show me the free/used disk space, but that's only accessable from the
> console, and my machine is currently running headless. I'm looking for
> something that I can run over drawterm to find out how much space is
> being taken up (du / doesn't work, because that'll also count the
> stuff in /mnt/term).

con /srv/fscon

doesn't work?

Re: [9fans] keeping an eye on disk use

[John Floren]

On 10/20/06, Skip Tavakkolian <9nut@9netics.com> wrote:
> > I've got an older machine set up as a standalone cpu/auth/file server,
> > running fossil (20 GB) and no Venti. My question is, what is a good
> > way to keep an eye on disk usage? I know that 'df' in fossilcons will
> > show me the free/used disk space, but that's only accessable from the
> > console, and my machine is currently running headless. I'm looking for
> > something that I can run over drawterm to find out how much space is
> > being taken up (du / doesn't work, because that'll also count the
> > stuff in /mnt/term).
>
> con /srv/fscon
>
> doesn't work?
>
>
The result of your command:
con: cannot open /srv/fscons: '/srv/fscons' permission denied
I've tried it.


John
-- 
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

Re: [9fans] keeping an eye on disk use

[Francisco J Ballesteros]

Are you running that as the host owner?

On 10/20/06, John Floren <slawmaster@gmail.com> wrote:
> On 10/20/06, Skip Tavakkolian <9nut@9netics.com> wrote:
> > > I've got an older machine set up as a standalone cpu/auth/file server,
> > > running fossil (20 GB) and no Venti. My question is, what is a good
> > > way to keep an eye on disk usage? I know that 'df' in fossilcons will
> > > show me the free/used disk space, but that's only accessable from the
> > > console, and my machine is currently running headless. I'm looking for
> > > something that I can run over drawterm to find out how much space is
> > > being taken up (du / doesn't work, because that'll also count the
> > > stuff in /mnt/term).
> >
> > con /srv/fscon
> >
> > doesn't work?
> >
> >
> The result of your command:
> con: cannot open /srv/fscons: '/srv/fscons' permission denied
> I've tried it.
>
>
> John
> --
> Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
>
>

Re: [9fans] keeping an eye on disk use

[John Floren]

On 10/20/06, Francisco J Ballesteros <nemo@lsub.org> wrote:
> Are you running that as the host owner?
>
<snip>

Ah, much better. Thanks. Three percent used :-)

On a similar topic, I want to convert this 20 GB disk to Venti and use
another 6GB drive I've got for fossil/swap/9fat. How can I get the
data from my current fossil disk to the 6GB? I assume that once I get
my system running on the 6GB, I can follow the wiki instructions to
add the 20GB as Venti.


John
-- 
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

Re: [9fans] keeping an eye on disk use

[Francisco J Ballesteros]

why not format your venti/fossil and then
copy the data from the old one?


On 10/20/06, John Floren <slawmaster@gmail.com> wrote:
> On 10/20/06, Francisco J Ballesteros <nemo@lsub.org> wrote:
> > Are you running that as the host owner?
> >
> <snip>
>
> Ah, much better. Thanks. Three percent used :-)
>
> On a similar topic, I want to convert this 20 GB disk to Venti and use
> another 6GB drive I've got for fossil/swap/9fat. How can I get the
> data from my current fossil disk to the 6GB? I assume that once I get
> my system running on the 6GB, I can follow the wiki instructions to
> add the 20GB as Venti.
>
>
> John
> --
> Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
>
>

Re: [9fans] keeping an eye on disk use

[John Floren]

On 10/20/06, John Floren <slawmaster@gmail.com> wrote:
> On 10/20/06, Francisco J Ballesteros <nemo@lsub.org> wrote:
> > Are you running that as the host owner?
> >
> <snip>
>
> Ah, much better. Thanks. Three percent used :-)
>
> On a similar topic, I want to convert this 20 GB disk to Venti and use
> another 6GB drive I've got for fossil/swap/9fat. How can I get the
> data from my current fossil disk to the 6GB? I assume that once I get
> my system running on the 6GB, I can follow the wiki instructions to
> add the 20GB as Venti.
>
>
> John

I've kind of come to the realization that I'm not fully certain how
Fossil works. It *seems*, based on things I've read, that Fossil
simply stores new files until they can be written to Venti, at which
point the file is simply replaced by a pointer to the appropriate data
in Venti. Is this right? Does that mean that with my 6 GB fossil disk
and 20 GB Venti, I can actually store a lot more than 6 GB of data
(provided I allow stuff to write to Venti periodically)?
I'd appreciate if someone could clear this up for me.
Thanks

John Floren
-- 
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

Re: [9fans] keeping an eye on disk use

[Bruce Ellis]

i wish i knew. i'm not gonna read the source to find out.
look in the archives for my woe when fossil - which i
thought was a cache - filled up and the machine was
completely unuseable without a lot of work.

not a cache, a working area.  too many kids, not enough
icecreams.  use another fs if you want to process
significant data.

brucee

On 10/21/06, John Floren <slawmaster@gmail.com> wrote:
> On 10/20/06, John Floren <slawmaster@gmail.com> wrote:
> > On 10/20/06, Francisco J Ballesteros <nemo@lsub.org> wrote:
> > > Are you running that as the host owner?
> > >
> > <snip>
> >
> > Ah, much better. Thanks. Three percent used :-)
> >
> > On a similar topic, I want to convert this 20 GB disk to Venti and use
> > another 6GB drive I've got for fossil/swap/9fat. How can I get the
> > data from my current fossil disk to the 6GB? I assume that once I get
> > my system running on the 6GB, I can follow the wiki instructions to
> > add the 20GB as Venti.
> >
> >
> > John
>
> I've kind of come to the realization that I'm not fully certain how
> Fossil works. It *seems*, based on things I've read, that Fossil
> simply stores new files until they can be written to Venti, at which
> point the file is simply replaced by a pointer to the appropriate data
> in Venti. Is this right? Does that mean that with my 6 GB fossil disk
> and 20 GB Venti, I can actually store a lot more than 6 GB of data
> (provided I allow stuff to write to Venti periodically)?
> I'd appreciate if someone could clear this up for me.
> Thanks
>
> John Floren
> --
> Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
>

Re: [9fans] keeping an eye on disk use

[Steve Simon]

> ... It *seems*, based on things I've read, that Fossil
> simply stores new files until they can be written to Venti, at which
> point the file is simply replaced by a pointer to the appropriate data
> in Venti.

Yep, this is right, usually snapshots to venti take place every night
so you can only write (or change) a bit less than 6Gb of data per day but
you can store 20Gb in total. The 20Gb are compressed and all duplicate
blocks are merged so that 20Gb goes a long way. If you are dumping large
amounts of data into venti - copying old backup CDs into venti to make them
online, then you can do a snapshot to venti manually to flush out fossil
and free some space in it.

Fossil and venti have served me well and been very reliable - failing disks
are less good but there is a proceedure for recovery.

-Steve

Re: [9fans] keeping an eye on disk use

[geoff]

If you want to access your fossil console without becoming the host
owner, set up consolefs(4) to run on your file server in cpurc.local.
Here's an example consoledb file to use:

group=sys
	uid=bootes
	uid=YOUR-NAME-GOES-HERE
console=fs dev=/srv/fscons
	gid=sys

and put this in one of your other ndb files (e.g., local):

sys=fs console=YOUR-FILE-SERVER-GOES-HERE	# for C

Then `C fs' will let anybody in the group=sys list at the fossil
console.