Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Poul-Henning Kamp
to >investigate at that time. Isn't this just the lemming-syncer hurling every dirty block over the cliff at the same time ? To find out: Run gstat and keep and eye on the leftmost column The road map for fixing that has been known for years... -- Poul-Henning Kamp | UNIX

Re: Geom_gbde and Hardware Crypto Accelerators

2005-04-05 Thread Poul-Henning Kamp
Thanks in advance. > >Hi, > It wont work. I know the authorth was thinking about adding >VIA C3/Padlock support, but not sure the details. There is partial support for opencrypto/hifn/vpn1401 in the p4 branch phk_gbde, but it doesn't help very much because of the high setup o

Re: gbde blackening feature - how can on disk keys be "destroyed" thoroughly?

2004-09-04 Thread Poul-Henning Kamp
icates this is a serious threat for you, you should arrange for simple physical destruction of your disk to be available. Most modern disks have one or more holes in the metal only covered by a metalic sticker. Pouring sulfuric acid through those openings is a good start. -- Poul-Henning Kamp

Re: gbde blackening feature - how can on disk keys be "destroyed" thoroughly?

2004-09-05 Thread Poul-Henning Kamp
incremental security imo, on the other hand it is feasible to implement it, so I've put it on the todo list. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe

Re: fsck on a read only partition?

2007-07-05 Thread Poul-Henning Kamp
;read/write? Not apart from the dreaded debug option. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequat

Re: dmesg showing wrong frequency (IBM T30)

2003-07-18 Thread Poul-Henning Kamp
o high temperatures. Poul-Henning [*] Known in certain circles as a "Warnering your laptop" :-) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe

Re: Bootstrap: Machine keeps booting ? (boot0/mbr) ?

2003-08-06 Thread Poul-Henning Kamp
oking at >it now and will probably be committing a fix. Already committed. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be ex

Re: FW: 20TB Storage System

2003-09-02 Thread Poul-Henning Kamp
I need two to sustain the IO >required? Spreading it will give you more I/O bandwidth. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what c

Re: FW: 20TB Storage System

2003-09-02 Thread Poul-Henning Kamp
3 of these >shelves what would my expected loss of IO be? The loss will mostly be from latency, but how much is impossible to tell I think. The statistics of this, even with my trusty old Erlang table would still be too uncertain to be of any value. -- Poul-Henning Kamp | UNIX since Zilo

Re: 20TB Storage System

2003-09-03 Thread Poul-Henning Kamp
d 5-20T filesystem and actually fsck them. I am not sure I would advocate 64k blocks yet. I tend to stick with 32k block, 4k fragment myself. This is a problem which is in the cross-hairs for 6.x -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP sin

Re: 20TB Storage System

2003-09-03 Thread Poul-Henning Kamp
more inodes than I need, it also saves fsck time. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by

Re: 20TB Storage System

2003-09-05 Thread Poul-Henning Kamp
n that large disks will contain large files. > >It strikes me that driving the block size up (as far as 1M) and having >a 256 (or so) fragments might become appropriate. Sounds like a _great_ project for somebody :-) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED