322 reputation
17
bio website xdroop.com/404.html
location Ottawa, Canada
age 43
visits member for 3 years, 7 months
seen Feb 11 at 21:57
Senior Sysadmin for a company providing both contract system administration services and internet hosted/hosting services.
  • Windows helpdesk 1996
  • Unix helpdesk/junior admin 1998
  • software configuration/build management 1999
  • senior unix/network admin 2001-present

  • Feb
    11
    comment Does LVM impact performance?
    @hildred, the above is what I was referring to -- I am not aware of any tools that can recover data from a LVM that spans multiple disks (block devices) with one disk missing.
    Feb
    11
    comment Does LVM impact performance?
    @user13719: yes, you can LVM any block device, but in practice people don't do this. They end up with a single drive LVM'd. Then they add another drive, and use LVM to extend the existing file system onto the new disk. At that point, the failure of either disk will kill the LVM.
    Nov
    15
    comment What does a high load with an empty top mean?
    The results of iostat -kx 10 show that the disks are not busy. It does appear that these processes are blocked on nfs somehow. @StephaneChazelas, if you write your comment as an answer I'll accept it.
    Nov
    15
    comment What does a high load with an empty top mean?
    Have not checked, but I would presume in that case that the [%wa] (ie, wait-on-io) parameter would be non-trivial at that point?
    Nov
    15
    comment What does a high load with an empty top mean?
    I would presume the [%wa] field would be high in that case?
    Nov
    15
    comment What does a high load with an empty top mean?
    OK, is there a way to determine why they are in the uninteruptable state and what I should do about them?
    Nov
    15
    asked What does a high load with an empty top mean?
    Sep
    3
    awarded  Yearling
    Aug
    22
    awarded  Commentator
    Aug
    22
    comment What makes CentOS “enterprisey” compared to “generic” distributions like Ubuntu?
    @Warren true, but I built on RHEL for stability, not VMware for currency. The lure of RHEL was no major changes -- and they failed. The fact that I got caught up in VMware's marketeering as a side-effect is irrelevant to me.
    May
    4
    comment Need advice to install Unix-like OS on my Laptop
    @Behrooz When it comes to driving hardware, crappy Windows drivers can provide a result better than that provided by total lack of support in Linux. On a platform that is well supported by both Linux and Windows, I agree -- Linux usually wins hands down. But laptops, especially current, high-power laptops, have been known to be poorly supported by Linux.
    May
    4
    answered Need advice to install Unix-like OS on my Laptop
    Feb
    9
    comment Installing CentOs 5.5-x86_64 kernel hangs with message NET: Registered Protocol family 2
    nolapic strikes again.
    Feb
    9
    answered Are any SCSI modules needed in initrd if only SATA and IDE disks are used?
    Feb
    9
    answered What makes CentOS “enterprisey” compared to “generic” distributions like Ubuntu?
    Feb
    9
    comment What makes CentOS “enterprisey” compared to “generic” distributions like Ubuntu?
    ...except when they do change something. Like the glibc change in 5.4 that hoses VMware Server 2.0.x.
    Feb
    9
    comment Why do we use su - and not just su?
    -- is a flag that most programs interpret as "nothing after this should be taken as a flag". Useful for greping for things which start with a dash.
    Feb
    9
    answered How to automatically encrypt, sign, and forward root's email?
    Feb
    9
    answered Does LVM impact performance?
    Jan
    22
    comment Unable to find Red Hat Server
    Sounds like you need to look at your apache configuration files and see what's changed in there.