SMB/CIFS connection timeout kernel-3.10.0-957.21.3.el7

After upgrading to kernel-3.10.0-957.21.3.el7 on a CentOS server, I experienced connection timeout issues on Windows servers trying to access SMB shares. On the contrary, I was able to access the share using a Linux system without any problem. The bug was reported in CentOS Bug Tracker and it’s caused by one of the patches applied… Continue reading “SMB/CIFS connection timeout kernel-3.10.0-957.21.3.el7”

Recover GRUB in CentOS 7

To recover GRUB, you’ll need the OS ISO image, in this case CentOS 7, and boot from it. From the ISO menu, choose Trobleshooting -> Rescue a CentOS system and then 1) Continue; the system will be mounted under /mnt/sysimage. To make your system the root environment run: chroot /mnt/sysimagechroot /mnt/sysimage Identify GRUB installation: ls… Continue reading “Recover GRUB in CentOS 7”

CIFS: mount error(112): Host is down

When trying to mount a Windows share using mount, I ran into this problem: mount -v -t cifs -o username=username,password=password //hostname/sharename /mnt mount.cifs kernel mount options: ip=XXX.XXX.XXX.XXX,unc=\\hostname\sharename,user=username,prefixpath=sharename,pass=******** mount error(112): Host is downmount -v -t cifs -o username=username,password=password //hostname/sharename /mnt mount.cifs kernel mount options: ip=XXX.XXX.XXX.XXX,unc=\\hostname\sharename,user=username,prefixpath=sharename,pass=******** mount error(112): Host is down In my case, the error was… Continue reading “CIFS: mount error(112): Host is down”