Reputation
1,104
Top tag
Next privilege 2,000 Rep.
Edit questions and answers
Badges
1 9 23
Newest
 Caucus
Impact
~84k people reached

  • 0 posts edited
  • 0 helpful flags
  • 48 votes cast
Feb
9
comment ipv6 Loopback Addresses (equivalent to 127.x.x.x)
And site local is NOT host local. That's my point :-)
Feb
5
answered ipv6 Loopback Addresses (equivalent to 127.x.x.x)
Feb
5
comment ipv6 Loopback Addresses (equivalent to 127.x.x.x)
This is effectively widening the routing table into the range reserved for ipv4 compatibility as described by Ben Jencks.
Feb
5
comment Any experience with SATA SAS Interposer Cards?
Can you post details about the enclosures and SSDs you used, and whether things worked out well?
Aug
27
awarded  Caucus
Jun
4
awarded  Notable Question
Mar
25
awarded  Yearling
Nov
20
awarded  Caucus
Nov
4
awarded  Popular Question
Oct
26
comment limit linux background flush (dirty pages)
Wow, thanks for your input. Although this wasn't the case for me, you give me yet another reason to avoid HW RAID altogether and move on to HBA only setups. HW RAID still has the BBWC advantage, but with things like bcache moving into the kernel, even that vanishes. The con side for HW RAID is exactly the kind of firmware bugs you describe. I did have another system with DRBD setup and high I/O load causing firmware-resets, so this is not rare to come across (might have been exactly that bug).
Sep
4
awarded  Notable Question
Aug
4
awarded  Nice Answer
Jul
2
awarded  Curious
Mar
25
awarded  Yearling
Feb
6
answered OpenVPN clients traffic
Jan
9
awarded  Nice Answer
Dec
2
awarded  Famous Question
Sep
24
awarded  Popular Question
Jun
15
comment Is KVM stable enough for production use in 2011?
@JoelESalas: Live migration is possible with dual primary mode, but I do not use that. I assume DRBD protocol C is mandatory in that scenario. DRBD behaves much like shared storage in dual primary. I have LVM below DRBD and create one DRBD pair per VM disk. With LVM on top, use LVM cluster support.
Jun
11
comment Is KVM stable enough for production use in 2011?
@JoelESalas: I currently prefer DRBD below the VMs and cache=none. cache=writethrough was bad advice actually, and it is not default anymore. cache=writeback is OK for low IO machines, but heavy writers gain problems with it, so cache=none is best option now.