Hang on opening new zsh instance with a "bad" directory in the dir history

[VorpalBlade]

Hang on opening new zsh instance with a "bad" directory in the dir history

[romkatv]

Closing as Good Enough.

[romkatv]

What's the output of df --output=fstype for the problematic directories while they exist?

When you have a problematic directory (one that eventually times out on accessing it)

How long does it take for it to time out?

z4h will hang on opening a new zsh instance

Does it hang for good or only for as long as the timeout?

I'm just trying to explore options for fixing this that don't require user configuration. In the worst case I'll add a flag to disable persistent directory as you suggested but perhaps there is a better way.

[VorpalBlade]

What's the output of df --output=fstype for the problematic directories while they exist?

I'll get back to you when I'm home and can replicate this again (should be this evening or tomorrow).

How long does it take for it to time out?

Over a minute for sure until zsh gets unstuck from the KDE kio case, I'll get back with a time measurement if you want.

Does it hang for good or only for as long as the timeout?

It does get unstuck again after the timeout. But again, this takes well over a minute.

[VorpalBlade]

What's the output of df --output=fstype for the problematic directories while they exist?

Here are some I have seen:

• fuse.kio-fuse
• fuse.gvfsd-fuse
• fuse.sshfs (hangs for much shorter than the others, only ~10 seconds)
• cifs -- Note if this is inaccessible, df hangs, as does a lot of other commands such as umount.
• smb3 -- Note if this is inaccessible, df hangs, as does a lot of other commands such as umount.

I'm not set up to test nfs.

I have also noticed that many other things hangs, such as even typing in the path, it seems to hang as it is trying to do syntax highlighting and decide if the path should be underlined for it being a valid path. Presumably this is a feature of zsh-syntax-highlighting and should be reported separately to there.

[romkatv]

• cifs -- Note if this is inaccessible, df hangs, as does a lot of other commands such as umount.
• smb3 -- Note if this is inaccessible, df hangs, as does a lot of other commands such as umount.

That's rough. I cannot think of a good automated solution that would handle this. Seems like disabling persistent dir history is the best option for you. You can do it like this:

zstyle ':z4h:dir-history:' max-size 0

I have also noticed that many other things hangs, such as even typing in the path, it seems to hang as it is trying to do syntax highlighting and decide if the path should be underlined for it being a valid path. Presumably this is a feature of zsh-syntax-highlighting and should be reported separately to there.

There is ZSH_HIGHLIGHT_DIRS_BLACKLIST.

[VorpalBlade]

There is ZSH_HIGHLIGHT_DIRS_BLACKLIST.

Thanks, I already found that out separately after writing my previous post. That does help a bit.

That's rough. I cannot think of a good automated solution that would handle this.

An option similar to ZSH_HIGHLIGHT_DIRS_BLACKLIST for Z4H purposes could perhaps work here.

As for umount hanging etc, there seem to be some mount options that could help echo_interval=n for cifs/smb3 for example. From what I can read, NFS will have similar behaviour, but be more complicated to set up for sensible timeouts (-o soft,timeo=20 though apparently using soft might cause data corruption on NFS. I have not had time to test any of this yet, and I normally use the KDE kio approach for remote file SMB systems anyway. (I do also use sshfs between Linux machines.)

[romkatv]

zstyle ':z4h:dir-history:' max-size 0

Is this ☝️ good enough for you? I'd rather not add a new option if an existing option solves your use case.

[VorpalBlade]

Is this point_up good enough for you? I'd rather not add a new option if an existing option solves your use case.

Yes, it seems to work correctly. I'm happy with this solution as persistent directory history is not something I use, and normal popd to go back one level of cd seems to still work.