Running Windows 7 and eager to upgrade to Windows 10 but you do not see the update proposal in Windows update? Here is the checklist to go through and make sure you have all the requirements in order to get the free upgrade : 1. You are running a genuine version of Windows 2. Make… Read More »
Since the latest major version release of CentOS/RHEL 7, it seem that we wen’t a bit crazy about the whole systemd thing… Seriously, having a network interface named “eno16780032” isn’t that great! Fortunately, there is a a way of getting back the old naming convention by following these steps : 1. Edit the Grub configuration… Read More »
Having this error message trying to update your iPhone 5s to iOS 9.3? Unable to Verify Update iOS 9.3 failed verification because you are no longer connected to the Internet I have encountered this behaviour on a iPhone 5s device and it seem that this is also occurring on older devices such as iPad Air as well.… Read More »
Expansion enclosures of the HP P2000 MSA G3 can contain up to two SAS I/O modules to connect to the SAN head storage processors (controllers). At some point, you may need to update the firmware on them. If you did and encountered the following message : *** code load failed *** This indicate that the… Read More »
I have encountered the following issue lately trying to power on a virtual machine with a limited permission user using the vSphere Web Client : The “Power on virtual machine” operation failed for the entity with the following error message. Virtual machine cannot be found. This happened with a regular user with the appropriate role… Read More »
You probably had this output error while trying unmounting a drive/mount point on a Linux or Unix system : Device or resource busy Of course, you certainly need to make sure that no user or process are accessing this filesystem in any way. Even though you have taken every precaution, you still may have this… Read More »
Have you encountered the following error trying to connect to OpenVPN server? JSONDialog: Error running jsondialog, status=(5, [], [‘task_for_pid(): 0x5’]), stdout=[], I have observed the following error message under the following circumstances : Operating system : Mac OSX El Capitan 10.11 OpenVPN client : v2.0.18.202 or older version The problem occur because of the System… Read More »
If you had installed your RHEL/CentOS 5 system using LSILogic Parallel controller, you may have noticed the horrible I/O performance… You unfortunately cannot just change the controller type and expect your VM to boot. There is a few easy steps to ensure that the OS can boot with the new controller. FIRST thing FIRST :… Read More »
If you just have reconfigured your virtual machine hardware in vCenter and can see that the status is stuck at “In progress…” for a while (much longer than usual, even though waiting 30 minutes for something that should normally take 5 seconds), then you may be facing the bug I have seen in vCenter version… Read More »
You have noticed such behaviour in the system logs (/var/log/messages)? kernel: httpd invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 kernel: Call Trace: kernel: [<ffffffff800cb67d>] out_of_memory+0x8e/0x2f3 kernel: [<ffffffff8002e493>] __wake_up+0x38/0x4f kernel: [<ffffffff8000a7ea>] get_page_from_freelist+0x2/0x442 kernel: [<ffffffff8000f6a2>] __alloc_pages+0x27f/0x308 kernel: [<ffffffff8001308d>] __do_page_cache_readahead+0x96/0x17b kernel: [<ffffffff800139d6>] filemap_nopage+0x14c/0x360 kernel: [<ffffffff80008972>] __handle_mm_fault+0x1fd/0x103b kernel: [<ffffffff8000c795>] _atomic_dec_and_lock+0x39/0x57 kernel: [<ffffffff800671ae>] do_page_fault+0x499/0x842 kernel: [<ffffffff8005ddf9>] error_exit+0x0/0x84 Additionally, the system was hanging/very… Read More »