In practice, its invocation looks like: 1396615913363043073: automount(18060)(0xffff8803d19f8aa0) -> autofs_dev_ioctl: AUTOFS_DEV_IOCTL_VERSION_CMD: major: 1, minor 0, size: 24, ioctlfd: -1 1396615913363055840: automount(18060)(0xffff8803d19f8aa0) <- autofs_dev_ioctl: AUTOFS_DEV_IOCTL_VERSION_CMD: major: 1, minor 0, size: 24, ioctlfd: The parameters allow_other, reconnect and max_read are specific to sshfs. Financial Conduct Authority, and in Hong Kong by Jane Street Hong Kong Limited, a regulated entity under the Hong Kong Securities and Futures Commission (CE No. Perhaps the / needed in auto.master could explain problems encountered by other people, I don't know, or I missed something ? Source
Using the magic number, the user space daemon can determine what type of filesystem is mounted at that path. Internally the kernel converts this to jiffies and stores it in the exp_timeout field of the associated struct autofs_sb_info. 1396617872058420869: automount(30790)(0xffff8803d67cd500) -> autofs_dev_ioctl: AUTOFS_DEV_IOCTL_TIMEOUT_CMD: major: 1, minor 0, size: 24, ioctlfd: Which was the last major war in which horse mounted cavalry actually participated in active fighting? When I restart the >> daemon, the automount works, but fails after a day or two.
Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson. the owning automount(8) daemon) to the process group of the caller. AUTOFS_DEV_IOCTL_CATATONIC_CMD This ioctl is issued against a specific autofs filesystem and therefore you must have a valid ioctlfd to use before it can be issued. Conclusion I am always open for comments, questions and critique on this system, just use the form below.
The ioctlfd field encodes what autofs filesystem this ioctl is meant to operate on and the rest are ioctl specific arguments. Once you have an ioctlfd with which to operate, you can create a pipe and issue a AUTOFS_DEV_IOCTL_SETPIPEFD_CMD ioctl which has the same effect as passing the fd argument to mount(8). This time around, I wanted to be a bit more sophisticated and have a backup solution with the following features: Backup all of the files, only excluding a few defined directories that So I'd suggest implementing a cronjob that periodically accesses the sshfs directory, so autofs' reconnect fires.
If the automount daemon was restarted and some of its autofs filesystems that its supposed to be managing are shadowed by the real mounts (and therefore still mounted), there is no Proceed anyway? (y,n) y Nach y werden 4000 Blöcke angelegt, aber das Mounten des Images unter /backup funktioniert nicht - auch nicht nach erneutem Server-Neustart. The parameter to the ioctl contains a struct args_timeout. http://unix.stackexchange.com/questions/210545/autofs-failed-to-mount-autofs-path-as-service-but-not-manually-selinux We use automount for a number of things here at Jane Street.
Previously the user space daemon needed to open the directory where the autofs filesystem was mounted and use that file descriptor to issue ioctls. i'm totally a newbie to selinux. Selinux is not enabled. 2. As such, once that filesystem is mounted, the underlying autofs filesystem has been shadowed.
This is used by the user space daemon in its ioctl back to the kernel to notify the kernel whether or not it was able to process the request (via AUTOFS_DEV_IOCTL_READY_CMD This means rsync will only transfer files that are new or changed, into the new subdirectory and hardlink everything else to the previous day. Some of you might have spotted that my default excludes file has the line /var/lib/mysql. There is no error message in /var/log/messages.
In that case, the daemon is expecting a 300 byte packet from the kernel but will receive a 304 byte packet. this contact form Since I am operating servers at Hetzner, I purchased some backup space there and based my new system around their available system. The new strategy consists of several key components: Mounting a remote directory system-config-securitylevel should allow you to do this. AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD This ioctl is issued to signal that the user space daemon no longer needs to issue ioctls for a given autofs filesystem.
Read more details in the sshfs manpage. :sshfs\#[email protected]\:/ - This instructs autofs to use sshfs to mount this directory. In this instance I used a SystemTap script (developed as I went and presented at the end of this blog post) coupled with simply browsing the available source code to better Copy sent to Jan Christoph Nordholz
Das habe ich hinbekommen nach folgender Korrektur und Neustart des Servers: /etc/autofs.master muss heißen /etc/auto.master (service autofs reload reichte nicht) 2. Changed in autofs5 (Ubuntu): status: Triaged → Won't Fix See full activity log To post a comment you must log in. Now to also automatically mount this loopback device add the following line to /etc/auto.master /mnt/auto /etc/auto.img --timeout=30 Next create the file /etc/auto.img with the following contents /backup -fstype=ext4,defaults,sync,dirsync,commit=1,loop :/mnt/sshfs/my-backup-space/backup.img This will
I can change the permissions of /home after autofs has started, but it's really not convenient: there's no easy way to do that automatically with either sysvinit or systemd. Then i created auto.docfolder under /etc and inside it: pdf -fstype=cifs,rw,noperm,user=username,pass=password ://myshare/docs When I run sudo /sbin/service autofs restart inside /var/log/messages I can read: Jun 18 12:19:53 Rtmbssrv automount: do_mount_autofs_indirect: failed You can read more about this problem in this lwn.net article. This made it easier to match up various calls that automount daemon was making to better understand its behavior.
The parameter to the ioctl contains a struct args_ready. In the end, from the view point of autofs filesystems, it's important to remember that with indirect mounts the autofs filesystem is mounted on the mountpoint specified in the master map Why is the service unable to mount that folder? Check This Out Thank you for taking the time to make a good bug report.
client's settings: [[email protected] local]# more /etc/auto.home * -fstype=nfs,soft,intr,rsize=8192,wsize=8192,nosuid, tcp 126.96.36.199:/utacws/ws_users:& [[email protected] local]# more /etc/auto.master # # $Id: auto.master,v 1.4 2005/01/04 14:36:54 raven Exp $ # # Sample auto.master file # This If no expire candidates can be found the ioctl returns -1 with errno set to EAGAIN. This script should not be considered a general purpose tool as it is placing specific user space probes at specific lines in the automount source and therefore would certainly need to On success the call also sets the process group id used to identify the controlling process (eg.
This particular ioctl signals that the request processing was successful and the kernel can continue. View all posts by Florian Beer → Post navigation Previous Previous post: I registered an Emoji DomainNext Next post: Inspecting logfiles on the commandline 10 comments Werner Noske says: July 31, mkfs.ext4 /mnt/sshfs/my-backup-space/backup.img bringt folgende Meldung: mke2fs 1.41.12 (17-May-2010) /mnt/sshfs/my-backup-space/backup.img is not a block special device. User to Kernel Communication Interfaces to the Kernel All communication from user space to the kernel is done via ioctl(2).
This document has a good description of the problem and motivation for the newer interface. The New Interface Some of the main points of the newer interface are: All ioctls are issued to the "/dev/autofs" device node. Otherwise, it is considered "indirect." In addition, both direct and indirect mounts can have "offsets" (see autofs4-mount-control.txt, auto.master(5) and autofs(5) for further details). Operating directly on the sshfs also works without incidents.
My solution was to add a --mode option to autofs, with the included patch. The user space program does whatever is necessary to mount the file system (which usually involves some invocation of mount(8)) and then reports success or failure back to the kernel so