121 reputation
3
bio website overprotectivemedia.com
location New Brunswick, NJ
age 31
visits member for 4 years, 10 months
seen Oct 8 at 17:38
  • TechOps engineer responsible for MySQL, Mongo, Redis and an Amazon EC2 infrastructure.
  • Software engineer in Ruby, Java, and whatever else comes my way
  • Former enterprise identity solutions architect, now startup devotee

Apr
25
comment Is it safe to snapshot an mdadm RAID with only xfs_freeze?
Just making sure - you're using mdadm for the RAID, right?
Dec
9
comment Is it safe to snapshot an mdadm RAID with only xfs_freeze?
@ewwhite: Thanks for the suggestion, but EBS snapshots are the way we're focusing on. I don't see any reference to RAID in that product, though... the same question seems to apply.
Dec
9
revised Is it safe to snapshot an mdadm RAID with only xfs_freeze?
Renamed/rephrased question to switch focus from EBS to mdadm
Nov
26
comment Is it safe to snapshot an mdadm RAID with only xfs_freeze?
Adam C: The question is, if I freeze the FS, does mdadm honor that and won't make changes that would cause the disk to drift and thus won't be point-in-time guaranteed?
Nov
25
comment Is it safe to snapshot an mdadm RAID with only xfs_freeze?
We also have discovered that RAIDs get us much better performance than the single-disk does, even with PIOPS. And yes, we return immediately, but there is a large performance hit on a disk that is being snapshotted under the hood. But that's besides the point of the faster snapshots, which means we can clone a server in under an hour rather than wait for the snapshot to finish in 4+.
Nov
25
comment Is it safe to snapshot an mdadm RAID with only xfs_freeze?
Specifically, because when we do snapshot, a RAID can do it in parallel, thus the impact of snapshotting (which is substantial) lasts a much shorter amount of time.
Nov
25
asked Is it safe to snapshot an mdadm RAID with only xfs_freeze?
May
20
awarded  Editor
May
20
revised PostgreSQL tuning recommendation for large server and dataset
Clarified the information I'm looking for
May
19
comment PostgreSQL tuning recommendation for large server and dataset
Our use case is such that reads are, in the grand scheme of things, pretty rare. We have a data warehouse setup with reporting being done at regular intervals. Most of the reads during the day are very special-case searches and wouldn't really benefit from additional caching.
May
19
comment PostgreSQL tuning recommendation for large server and dataset
We have long-term plans to take more drastic action, including partitioning and sharding, but for the moment we're working with several servers (all very much like this one) that we need to get a baseline configuration for.
May
18
awarded  Student
May
18
asked PostgreSQL tuning recommendation for large server and dataset
Feb
4
awarded  Autobiographer