ate=1, whichever is appropriate for your CPUs and
kernel, in the boot cmdline.
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David Clarke
Systems Architect
Catalyst IT
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should.
From 'ceph-disk list':
Correct:
/dev/sda :
/dev/sda1 ceph data, active, cluster ceph, osd.0, block /dev/sda2
/dev/sda2 ceph block, for /dev/sda1
Shared OS disk:
/dev/sdc :
/dev/sdc1 other, linux_raid_member
/dev/sdc2 other, linux_raid_member
/dev/sdc3 other, linux_raid
It has a dependency on such things as librados2, librbd1 (for Ceph) and
glusterfs-common, libiscsi7, etc.
From the package description:
"This package provides extra block device backend modules for
qemu-system emulation and qemu-img from qemu-utils package, which are
rarely used and has extr
oposed?
There are notes on ceph.com regarding flash, and NVMe in particular,
deployments:
http://tracker.ceph.com/projects/ceph/wiki/Tuning_for_All_Flash_Deployments
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David Clarke
Systems Architect
Catalyst IT
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defaults you need to set parameters in
ceph.conf to something like:
osd_dmcrypt_type = luks
osd_cryptsetup_parameters = --cipher aes-xts-plain64
osd_dmcrypt_key_size = 512
[0]
https://en.wikipedia.org/wiki/Disk_encryption_theory#XEX-based_tweaked-codebook_mode_with_ciphertext_stealing_.28XTS.29
--
in Hammer, as
well as fixing interoperability issues that are required before an
upgrade to Infernalis. That is, all users of earlier version of Hammer
or any version of Firefly will first need to upgrade to hammer v0.94.4
or later before upgrading to Infernalis (or future releases)."
[0
u enable straw2.
>
>
> I believe straw2 only requires monitor support -- unlike the tuna led
> involved in executing CRUSH, straw2 is just about how the OSD/bucket
> weights get converted into a sort of "internal" straw weight. That's
> done on the monitors and enc
kages files, so it looks like something has gone awry with the
repository build scripts.
A direct download in available at:
http://download.ceph.com/debian-hammer/pool/main/c/ceph-deploy/ceph-deploy_1.5.28trusty_all.deb
That version does not include /usr/share/man/man8/ceph-deploy.8.gz, and
so does not
ny current ceph download site
download.ceph.com::ceph seems to work for us.
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ealand)
mirror. Is there an intention to re-enable this on either
download.ceph.com, or the EU equivalent?
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assumes that the amount of data in a pool corresponds closely
with the number of PGs it has.
In any case, I'd recommend more capacity. At that level of utilisation
a node failure or two could very quickly cause OSDs to fill even if
they're well balanced.
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David Clarke
Systems Archi
e worth investigating read ahead options on the storage
nodes themselves, both at the OS and disk controller levels. This
isn't something we've yet been able to test, however.
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David Clarke
Systems Architect
Catalyst IT
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want to investigate kexec[0]
('kexec-tools' package in
Debian derived distributions) in order to get your machines rebooting quicker.
It essentially
re-loads the kernel as the last step of the shutdown procedure, skipping over
the lengthy
BIOS/UEFI/controller firmware etc boot stage
qed qcow2 qcow parallels nbd dmg tftp ftps ft p https http cow cloop
>> bochs blkverify
>> blkdebug
>
> These settings all look fine too.
The key for client.libvirt is 'AQBx+F5ScBQlLhAAYCH8qhGEh/gjKW+NpziAlA==',
whereas the key being
passed to KVM is '+F5ScBQ
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