Hi Patrick,
I agree that learning Ceph today with Octopus is not a good idea, but,
as a newbie with this tool, I was not able to solve the HDD detection
problem and my post about it on this forum do not provide any help
(https://lists.ceph.io/hyperkitty/list/ceph-users@xxxxxxx/message/OPMWHJ4ZFCOOPUY6ST4WAJ4G4ASJFALM/).
I've also looked for a list of new unsupported hardware between Octopus
and Pacific without success. I've also received a private mail from a
Sweden user reading the forum last week and having the same HDD
detection problem with 17.2.6. He was asking if I have solved it. He
tells me he will try to debug.
In my mind, an old version of Ceph on an old material had more chances
to be stable and bug free too.
Yes I have created file systems (datacfs) and I can create a snapshot by
hand using cephadm. I've just tested:
# ceph fs set datacfs allow_new_snaps true
# ceph-fuse /mnt
# mkdir /mnt/.snap/$(TZ=CET date +%Y-%m-%d:%H-%M-%S)
and I have a snapshot. I can remove it too.
May be today my goal should be:
1- try to undo "ceph mgr module enable snap_schedule --force" (always
a bad idea in my mind to use options like "--force")
2- launch update to nautilus now that all HDDs are configured. In my
Ceph learning process there is also the step to test update procedures.
3- try again to use snap_schedule
Thanks for the time spent on my problem
Patrick
Le 19/09/2023 à 19:46, Patrick Donnelly a écrit :
I'm not sure off-hand. The module did have several changes as recently
as pacific so it's possible something is broken. Perhaps you don't
have a file system created yet? I would still expect to see the
commands however...
I suggest you figure out why Ceph Pacific+ can't detect your hard disk
drives (???). That seems more productive than debugging a long EOLifed
release.
On Tue, Sep 19, 2023 at 8:49 AM Patrick Begou
<Patrick.Begou@xxxxxxxxxxxxxxxxxxxxxx> wrote:
Hi Patrick,
sorry for the bad copy/paste. As it was not working I have also tried
with the module name 😕
[ceph: root@mostha1 /]# ceph fs snap-schedule
no valid command found; 10 closest matches:
fs status [<fs>]
fs volume ls
fs volume create <name> [<placement>]
fs volume rm <vol_name> [<yes-i-really-mean-it>]
fs subvolumegroup ls <vol_name>
fs subvolumegroup create <vol_name> <group_name> [<pool_layout>]
[<uid:int>] [<gid:int>] [<mode>]
fs subvolumegroup rm <vol_name> <group_name> [--force]
fs subvolume ls <vol_name> [<group_name>]
fs subvolume create <vol_name> <sub_name> [<size:int>] [<group_name>]
[<pool_layout>] [<uid:int>] [<gid:int>] [<mode>] [--namespace-isolated]
fs subvolume rm <vol_name> <sub_name> [<group_name>] [--force]
[--retain-snapshots]
Error EINVAL: invalid command
I'm reading the same documentation, but for Octopus:
https://docs.ceph.com/en/octopus/cephfs/snap-schedule/#
I think that if "ceph mgr module enable snap_schedule" was not working
without the "--force" option, it was because something was wrong in my
Ceph install.
Patrick
Le 19/09/2023 à 14:29, Patrick Donnelly a écrit :
https://docs.ceph.com/en/quincy/cephfs/snap-schedule/#usage
ceph fs snap-schedule
(note the hyphen!)
On Tue, Sep 19, 2023 at 8:23 AM Patrick Begou
<Patrick.Begou@xxxxxxxxxxxxxxxxxxxxxx> wrote:
Hi,
still some problems with snap_schedule as as the ceph fs snap-schedule
namespace is not available on my nodes.
[ceph: root@mostha1 /]# ceph mgr module ls | jq -r '.enabled_modules []'
cephadm
dashboard
iostat
prometheus
restful
snap_schedule
[ceph: root@mostha1 /]# ceph fs snap_schedule
no valid command found; 10 closest matches:
fs status [<fs>]
fs volume ls
fs volume create <name> [<placement>]
fs volume rm <vol_name> [<yes-i-really-mean-it>]
fs subvolumegroup ls <vol_name>
fs subvolumegroup create <vol_name> <group_name> [<pool_layout>]
[<uid:int>] [<gid:int>] [<mode>]
fs subvolumegroup rm <vol_name> <group_name> [--force]
fs subvolume ls <vol_name> [<group_name>]
fs subvolume create <vol_name> <sub_name> [<size:int>] [<group_name>]
[<pool_layout>] [<uid:int>] [<gid:int>] [<mode>] [--namespace-isolated]
fs subvolume rm <vol_name> <sub_name> [<group_name>] [--force]
[--retain-snapshots]
Error EINVAL: invalid command
I think I need your help to go further 😕
Patrick
Le 19/09/2023 à 10:23, Patrick Begou a écrit :
Hi,
bad question, sorry.
I've just run
ceph mgr module enable snap_schedule --force
to solve this problem. I was just afraid to use "--force" 😕 but as I
can break this test configuration....
Patrick
Le 19/09/2023 à 09:47, Patrick Begou a écrit :
Hi,
I'm working on a small POC for a ceph setup on 4 old C6100
power-edge. I had to install Octopus since latest versions were
unable to detect the HDD (too old hardware ??). No matter, this is
only for training and understanding Ceph environment.
My installation is based on
https://download.ceph.com/rpm-15.2.12/el8/noarch/cephadm-15.2.12-0.el8.noarch.rpm
bootstrapped.
I'm reaching the point to automate the snapshots (I can create
snapshot by hand without any problem). The documentation
https://download.ceph.com/rpm-15.2.12/el8/noarch/cephadm-15.2.12-0.el8.noarch.rpm
says to use the snap_schedule module but this module does not exist.
# ceph mgr module ls | jq -r '.enabled_modules []'
cephadm
dashboard
iostat
prometheus
restful
Have I missed something ? Is there some additional install steps to
do for this module ?
Thanks for your help.
Patrick
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