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seen Oct 21 at 19:35

I actively encourage the editing of any of my Question, Answer, and Tag Wiki content on all StackExchange sites except for meta sites. In other words, if you spot an inaccuracy or wish to clarify or improve a post of mine, add sources, etc., PLEASE do so! It will greatly benefit the net welfare and knowledge capital of the community. I am writing this here just in case you are of the misconception that answers are like forum posts, indelible articles authored by a single person.

The edit function is there for a reason, folks. I promise to never lash out at someone for substantially editing content originally authored by me, as long as your edit is constructive. If you don't yet have the site privilege to make instantaneous edits and I see your edit in the suggestion queue, I will do my best to either accept your edit outright, or incorporate the most useful parts of your edit into my post by "editing your edit".

If you have been told before that you shouldn't substantially edit others' answers, or if you've been the victim of polemic as a result of doing so, I'd like to apologize for that behavior. I think it's very counterproductive; our community is much worse-off for that kind of attitude.

Future visitors are best served by being able to read one cohesive, well-edited answer with sources to get the sum-total of the community's best knowledge in a single answer. A string of answers or comments each with their own nuggets of truth is much harder to decipher than one cohesive text. With the edit function, thanks to the fact that we each bring our own perspectives and unique knowledge, it is possible for us to author one cohesive text that eliminates the natural tendency of comment strings, replacing it with high-quality works that rival those of Wikipedia.

BTW, I don't approve of most edits on meta sites because I very rarely find questions on meta sites which deal purely in factual matters, so my answers are generally just my personal feelings on the matter.


Sep
16
comment Upgrading RAID controller to 4kn - do I have to reinitialize the array to use 4kn?
So your answer is incorrect: it is not true that "disks are either 512e or 4kn and it's impossible to switch them". Disks are either 512-byte native or 4kb-native, and certain 4kb-native disks may choose to support 512-byte emulation. If they support 512-byte emulation, they can switch between this mode and 4kn depending on what the disk controller supports; they'll prefer 4kn, but fall back to 512e if they have to.
Sep
16
comment Upgrading RAID controller to 4kn - do I have to reinitialize the array to use 4kn?
As stated in my question, the disks are 4kn, but they are able to fall back into 512e when the controller doesn't support 4kn. The current controller (RAID card) doesn't support 4kn, so they are currently operating in 512e mode. If I upgrade the RAID controller to one that does support 4kn, my question is, do the disks automatically start getting used in 4kn mode? Note that 512e means "512-byte emulation" -- it is impossible to have a disk that supports 512-byte emulation that isn't 4k native, because if it's not 4k native, then it's 512-byte native, not 512-byte emulation.
Jul
10
comment Bad performace of virtualized Fedora 20
Good old llvmpipe.
Jun
18
comment Proxy SSH to hide endpoints
Or configure /etc/hosts to point example.com to a custom host of your choosing on each computer...
Jun
6
comment Validation and Source Tables for T-code MB52 in ECC
SAP itself is completely off-topic for Super User. SU is for "computer enthusiasts and power users". When we use the term "user", we mean regular home users running home software, such as productivity software, web browsers, operating systems, content creation software, entertainment software, and so on. Enterprise finance / management software is so far out of range of acceptable topics for SU that I voted to close it. Please stop asking questions about SAP on SuperUser.
Mar
12
comment Changing partition table, Centos 6.3 on Hetzner Server
I complained to Hetzner about installimage's limitation of not supporting GPT a while ago and they said they were working on adding GPT support but it might be a while. Meanwhile you can edit a local copy and make the needed changes (if you're brave); it's just a perl script.
Mar
12
comment Changing partition table, Centos 6.3 on Hetzner Server
Have them set up LARA KVM-over-IP with an OS install disk and install it the way you want....
Feb
22
comment Migrate raw disk image over LAN
It's gonna take a while. Realized I have a gigabit port with a 100 Mbit/s allocation. Crap.
Feb
21
comment Migrate raw disk image over LAN
That would also eliminate the spurious/scary "No space left on device", since it's going to resize /dev/sda3 down to about 1.3 TB and will be copying it into a partition on the destination that's expecting to hold about 2.9 TB.
Feb
21
comment Migrate raw disk image over LAN
Awesome! I'm OK with copying the partition's free space because these instructions meet all of my other criteria. Although, wouldn't just resizing the filesystem and the partition itself on oldserver eliminate the need to copy all the free space? I don't care about /boot because it's so small, but for / at least, I could do that, right? Just set the partition's end sector to equal what sector resize2fs sets the end of the FS sector to. Well, sector, block... probably block. But thanks for this! This is great!
Feb
21
comment Migrate raw disk image over LAN
mdadm? I'm using hardware RAID. And I have no idea what AOE is, and have never used iSCSI. I don't think my servers are in the same broadcast domain, just in the same datacenter. There's at least one or two switches between the servers.
Feb
21
comment Migrate raw disk image over LAN
I think partimage can do raw copies that are filesystem aware, but it doesn't support ext4. So there goes that as an option... rsync is looking nicer as an option, as long as it preserves all discretionary access controls (a la chmod) and can cleanly copy over symlinks and device files...
Jan
3
comment How to avoid automatic responses from putting our mail server in a loop?
Which mail server are you using? Any solution would be implementation-specific to the functionality of the mail server and the operating system.
Aug
22
comment Why Don't Security ACLs Refresh Automatically?
BTW, we already performed a CHKDSK. No errors reported. ICACLS showed permissions the same as Windows Explorer, which is to say, everything is working. The problem is that we don't know how the original problem occurred and don't know if it'll come back. It caused a lot of headache because we were sitting there looking at the permissions for a user set to Full Control but they were still getting access denied. Then we logged off on the server, logged back on, and he wasn't in the ACL list at all!
Aug
22
comment Why Don't Security ACLs Refresh Automatically?
Thanks for your response! Unfortunately we can't reproduce the behavior now, and I don't think we're confusing NTFS filesystem ACLs with share drive permissions. We check both Properties and the "Sharing and Security" tab of every folder and they're always in sync. icacls shows nothing revealing and the permissions are now updating appropriately when we add or remove someone from the ACL list. BTW, we do use local groups, but we have to use individual domain users due to extremely custom permissions in some situations.
Aug
21
comment Why Don't Security ACLs Refresh Automatically?
Procuring paid software in my environment is 100,000 times more painful than logging off / logging in every single time I want to make a change to my system. Installing free (as in beer) software is ALMOST as bad. Unfortunately I won't be able to use your tool. I know it's not the normal behavior, so I'm trying to troubleshoot it.