| peepsalot | anyone have an idea how to deal with unresponsive byobu on a server? it seems to have frozen and unfortunately I have run byobu-enable so it always loads into byobu session(and hangs) when I attempt to logon. is there anything i can do without rebooting? | 02:08 |
|---|---|---|
| peepsalot | gah, nevermind it became responsive again, after 10minuts or something. really weird | 02:10 |
| ra | peepsalot, you could get the pid in top or htop and kill the process, then restart. i use tmux | 02:15 |
| peepsalot | the thing was I couldn't get into any shell at the time when it was frozen | 02:16 |
| peepsalot | also afaiui byobu is just a frontend for tmux anyways | 02:17 |
| ra | ctrl-f6 should force kill a window | 02:23 |
| JanC | byobu is a configuration for tmux or screen | 02:31 |
| JanC | calling it a frontend is technically wrong :) | 02:32 |
| JanC | and my guess would be that something was delaying login or something like that? | 02:33 |
| JanC | or shell startup? | 02:33 |
| JanC | or the system was overloaded | 02:34 |
| JanC | peepsalot: ^^^ | 02:35 |
| peepsalot | well, i do keep it busy with work: 49.94 load on 48 threaded cpu(s) :) but i've never noticed any responsiveness issues like that before | 02:38 |
| peepsalot | it happened while I was in the middle of doing a search of scrollback in a tmux window | 02:39 |
| peepsalot | which only keeps 100k lines in the worst case | 02:40 |
| JanC | I/O overload can do that, I guess, or when you get into a swap storm | 02:41 |
| peepsalot | 0 swap usage though, i got ram to spare | 02:41 |
| peepsalot | only about 33% ram used | 02:42 |
| JanC | if you were logged in remotely, it could also have been a network issue | 02:42 |
| ra | peepsalot, you might try byobu-disable and start it from the terminal to see if the hang reproduces that way | 02:44 |
| peepsalot | it was over ssh (on my LAN), but even when I went to the physical computer to try logging into virtual console, it was hanging upon login (because that would connect to the same byobu session since that's what "byobu-enable" configures it to do) | 02:46 |
| JanC | it might be a login/authentication/PAM issue | 02:47 |
| JanC | I've seen that happen on a heavy I/O load too | 02:48 |
| peepsalot | well, anyways its better now, not sure I could reproduce it if I tried (i've already been doing more scrollback finds and nothing like that is happening now), just an odd hiccup that hopefully won't occur again soon | 02:51 |
| ra | peepsalot, re my first reply about the pid, you can alt-f2, alt-f3 to open a new tty and kill the process | 03:05 |
| peepsalot | ra, i couldn't login from those at the time... because byobu/tmux was stuck churning on something, and login goes directly to byobu session | 03:09 |
| ra | so try byobu-disable and start it from the terminal to see if that changes anything | 03:12 |
| ra | peepsalot, but you did try alt-f2? | 03:14 |
| JanC | login would have to happen before byobu starts on a new virtual console | 03:15 |
| kinghat | is my zfs mirror pool mounting automatically to the server? | 04:34 |
| kinghat | what i mean is i can see its mount point and its working fine but i dont see it setup in my fstab. | 04:36 |
| kinghat | and i just added another drive to the system and formatted it to ext4 and it shows up in the disk list, im guessing i need to manually give it a mount point? | 04:38 |
| blackflow | kinghat: ZFS doesn't use fstab unless you explicitly set up mountpoints in legacy mode. zfs-mount.service mounts datasets that aren't in legacy mode. | 06:07 |
| kinghat | so I would just need to make it auto mount manually? | 15:25 |
| tomreyn | if you're alking to someone specifically, be sure to mention their nickname. | 15:30 |
| tomreyn | otherwise, provide context. | 15:30 |
| kinghat | tomreyn: nobody in particular and its just an added drive to my server. i had forgotten how my pool was mounted since it was set and forget. | 15:41 |
| kinghat | since i dont think i will be adding the drive to the pool and just using it for backup i need to figure out how to get it to auto mount like a regular drive | 15:42 |
| kinghat | unless zfs also does backup stuffs? | 15:43 |
| blackflow | kinghat: you're asking confusing questions. | 15:58 |
| kinghat | probably | 15:59 |
| blackflow | ZFS datasets are mounted either by zfs-mount.service -- which looks at datasets mountpoint attribute -- or by legacy mounts via fstab (for which mountpoint=legacy at the dataset attribute) | 15:59 |
| kinghat | ya im guessing mines via zfs-mount.service. | 16:00 |
| blackflow | so if you want a dataset mounted, you should specify its mountpoint= attribute. if it's "legacy", then you need to use fstab. | 16:00 |
| kinghat | i have a zfs mirror pool that is mounted and working fine. i added another drive, formatted it and noticed it doesnt automatically have a mount point. | 16:01 |
| blackflow | kinghat: "formatted it" ? | 16:01 |
| kinghat | i think i want to use the drive as a backup drive that gets backed up to from multiple locations everyday. | 16:01 |
| blackflow | you're not answering my questions. how did you "format" the drive (the terminology doesn't exist for ZFS) | 16:02 |
| kinghat | blackflow: i did mkfs.ext4 /dev/sdc | 16:02 |
| blackflow | and that has to do with your ZFS questions... what? lol | 16:02 |
| kinghat | it was previously formatted with ntfs | 16:02 |
| blackflow | so if you want an ext4 filesystem mounted at boot, you need to add it to fstab. | 16:04 |
| kinghat | it doesnt. i was confused as to why/how the zfs pool/drives were mounted as i couldnt remember setting them up. i just addeded a drive, formatted it, and noticed its not auto mounted anywhere on the system. | 16:04 |
| kinghat | yes | 16:04 |
| blackflow | fstab or write a proper systemd .mount unit (fstab is converted to them at run time anyway) | 16:04 |
| kinghat | figured thats what i needed to do something like that. | 16:04 |
| blackflow | ZFS is a completely different beast from traditional filesystems. It's a whole fs+volumes+raid+snapshots+compression+encryption+.... kind of kitchen sink solution, with a set of services, its own specific concepts and idisyncrasies | 16:06 |
| blackflow | ext4 is just a passive filesystem, nothing else, no services, no volume management, no raid, but latest versions methinks can do encryption. | 16:07 |
| kinghat | blackflow: if i didnt want to add the new drive as a 3rd mirror and wanted to use it as a backup drive, does zfs have something for that as well or just use something like rsync? | 16:30 |
| blackflow | kinghat: you can send ZFS snapshots at block-level to another drive, or over the network to <wherever> | 16:34 |
| kinghat | what if im sending other data from another drive to said backup drive? | 16:34 |
| kinghat | as well* | 16:35 |
| blackflow | kinghat: but consider what you're asking. if you're gonna add a third drive to the same chassis, that's hardly a backup. you can add a hot spare to your existing pool, or simply increase redundancy by creating a 3-way mirror | 16:35 |
| blackflow | you can rsync files from other filsystems, and use zfs snapshots send|recv for ZFS filesystems | 16:35 |
| blackflow | snapshots are moved between datasets, so you can have rpool/backups-for-zfs , rpool/backups-for-others and then you send|recv to backups-for-zfs, and use rsync under backups-for-others | 16:36 |
| RoyK | kinghat: something like this? https://xkcd.com/1718/ | 16:37 |
| kinghat | lel | 16:46 |
| === Greyztar- is now known as Greyztar | ||
| === Wryhder is now known as Lucas_Gray | ||
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