W dniu 2017-03-16 21:34, Kent Overstreet napisał(a):
On Thu, Mar 16, 2017 at 04:16:29PM +0100, Marcin wrote:
Hi!
It's good to hear that silence on mailinglist doesn't mean that there
is no
changes in developing bcachefs!
Join the irc channel! It's pretty active.
Done.
Is bcache fsck able to do fsck on tiered devices?
Yes - just pass it all the devices, e.g.
bcache fsck /dev/sdb /dev/sdc
Also, keep in mind fsck is still run by default at mount time, there's
normally
no need to use userspace fsck (and running fsck in userspace and then
mounting
will be slower than just mounting and running fsck then, due to mount
still
having to scan all the metadata which will be cache cold).
If I add bcachefs to fstab openrc expects userland fsck to works this is
why I tried it to use.
I know that there is some stability problem with tiered devices
because when
I mounted tiered fs and started to copy files on it the host rebooted
after
some time. I have to run netconsole to catch what kernel says, then I
post
it on ML.
You might have been hitting a bug in a recent patch to improve
readpages
performance - I backed it out last night after I discovered it.
There is no new commit, I'm at
commit 7274700edcf99ab67d4f72eca4f07d0220b9abae
Author: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Date: Tue Mar 14 21:07:39 2017 -0800
bcache: fix device hot add
I suspect that problem is due to using --metadata_replicas=2. If you
have a some spare time please try fileystsem formated with this
parameters:
# bcache format --compression_type=gzip --metadata_replicas=2
--data_checksum_type=crc64 --metadata_checksum_type=crc64 --tier=2
/dev/sde1 --tier=3 /dev/sdd1
And I'm still missing compression saves free space on disk:)
Yeah, that's something I've been wanting to get to, but people have
been
badgering me for replication more :)
You have implemented too many features, everyone find something usefull
for self and want to have it. You should implement only writing and
reading to/from files;)
Btw:
# curl https://evilpiepirate.org/git/bcache-tools.git/
curl: (51) SSL: no alternative certificate subject name matches target
host name 'evilpiepirate.org'
Marcin
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