There is a discussion about sofdeps here
http://openbsd-archive.7691.n7.nabble.com/What-are-the-disadvantages-of-soft-updates-td264283.html
Good day,
I have few questions, why are soft updates not on by default, and
does they help consistency in case of failure, are they recom‐
mended to be turned on only in specific case ? Except my mis‐
take, they help keeping drive consistent, avoid the need for fsck
for most hard
Ted Unangst wrote:
> Theo de Raadt wrote:
> > How does sync() fix this? Please explain this. Look at the source
> > code.
> >
> > sync() is an asyncronous call requesting syncronization, and once
> > it has marked the blocks that should be pushed, it returns before
> > the work has been done.
Theo de Raadt wrote:
> How does sync() fix this? Please explain this. Look at the source
> code.
>
> sync() is an asyncronous call requesting syncronization, and once
> it has marked the blocks that should be pushed, it returns before
> the work has been done.
Ah, indeed.
> > 2. cp could do
Ted Unangst wrote:
> Mogens Jensen wrote:
> > Even after many tries, I have not yet been able to corrupt the
> > filesystem so fsck cannot repair it without manual intervention.
> > However, if power is removed while the 'reorder_kernel' script runs,
> > the system will become completely
Mogens Jensen wrote:
> Even after many tries, I have not yet been able to corrupt the
> filesystem so fsck cannot repair it without manual intervention.
> However, if power is removed while the 'reorder_kernel' script runs,
> the system will become completely unbootable. I could do this multiple
Since posting this question I have been trying to intentionally corrupt
the router filesystem, by simulating power outages while writing files
and various other things.
Even after many tries, I have not yet been able to corrupt the
filesystem so fsck cannot repair it without manual intervention.
On 19:30 Tue 04 Jun, Mogens Jensen wrote:
> I'm going to build a router for use in a remote location, and I have
> chosen OpenBSD 6.5 for the task. Unfortunately, it's not possible to
> protect the router with an UPS, so it will have to be resilient enough
> to survive sudden power outages and
Yeah Marko,
this blog did help me when I was resarching the issue ...
Cheers,
On Thu, 6 Jun 2019 at 10:07, Marko Cupać wrote:
> On Tue, 04 Jun 2019 19:30:08 +
> Mogens Jensen wrote:
>
> > Can anyone with experience running OpenBSD routers without UPS, tell
> > if filesystem corruption is
On Tue, 04 Jun 2019 19:30:08 +
Mogens Jensen wrote:
> Can anyone with experience running OpenBSD routers without UPS, tell
> if filesystem corruption is going to be a problem after power
> outages, or if there are any officially supported ways to make the
> system resilient enough to not
On Jun 04 19:30:08, mogens-jen...@protonmail.com wrote:
> Can anyone with experience running OpenBSD routers without UPS, tell if
> filesystem corruption is going to be a problem after power outages
I have been using various ALIXes with a CF card as storage,
and in the 10+ years, I had to do a
On Tue, Jun 4, 2019 at 3:34 PM Mogens Jensen
wrote:
> Can anyone with experience running OpenBSD routers without UPS, tell if
> filesystem corruption is going to be a problem after power outages, or
> if there are any officially supported ways to make the system resilient
> enough to not break
Is there any way to tell the boot script to use the "-y" flag in fsck?
If something goes wrong with simple fsck, I always simply do a "fsck
-y". There is no other option for me. So, it would be VERY useful if
this could be done automatically instead of interrupting the router startup.
On Wed, Jun 05, 2019 at 05:12:20AM +, Roderick wrote:
>
> "-o union" was last in 3.7, disappeared in 3.8. Was there a reason?
>
> https://man.openbsd.org/OpenBSD-3.7/mount
Yes, the developers felt we couldn't make it work without bugs in a sane
way.
Locks over locks is insanely hard to get
On Wed, Jun 05, 2019 at 05:12:20AM +, Roderick wrote:
>
> "-o union" was last in 3.7, disappeared in 3.8. Was there a reason?
It was broken and complicated the filesystem code beyond measure.
-Otto
>
> https://man.openbsd.org/OpenBSD-3.7/mount
>
> Rodrigo
>
> > What also would
"-o union" was last in 3.7, disappeared in 3.8. Was there a reason?
https://man.openbsd.org/OpenBSD-3.7/mount
Rodrigo
What also would be practical is a "mount -o union" like in FreeBSD,
but unfortunately I do not see it in OpenBSD.
Then one could mount a mfs system over a normal one, only
What also would be practical is a "mount -o union" like in FreeBSD,
but unfortunately I do not see it in OpenBSD.
Then one could mount a mfs system over a normal one, only to be read.
Rodrigo
Look at -P option in mount_mfs.
Rodrigo
On 6/4/19 3:30 PM, Mogens Jensen wrote:
I'm going to build a router for use in a remote location, and I have
chosen OpenBSD 6.5 for the task. Unfortunately, it's not possible to
protect the router with an UPS, so it will have to be resilient enough
to survive sudden power outages and still
On 6/4/19 1:29 PM, Mogens Jensen wrote:
> I'm going to build a router for use in a remote location, and I have
> chosen OpenBSD 6.5 for the task. Unfortunately, it's not possible to
> protect the router with an UPS, so it will have to be resilient enough
> to survive sudden power outages and still
there is also an option for setting fsck to approve fixes without a prompt
..
but I cant think of it off the top of my head... and this would be useful
to set on your routers also
On Tue, 4 Jun 2019 at 21:05, Tom Smyth wrote:
> Hi Mogens,
>
> there are a number of threads on this if you
Hi Mogens,
there are a number of threads on this if you search the misc archives on
marc.info,
but setting softdep,noatime mount options on /etc/fstab is advisable
for routers I tend to use mfs for partitions that tend to get written to
alot
the following entries (/etc/fstab) show How I use
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