search for: parity

...ithout having to type them into the table command one by one. So, I would like to use (t? s? r?)apply to use one command instead of the following set of table commands: data(infert, package = "datasets") attach(infert) table.education<-table(education) table.age<-table(age) table.parity<-table(parity) etc. To make matters worse, what I subsequently need is the chi-square for each and all of the pairs of variables. Such as: chi.education.age<-chisq.test(table(education,age)) chi.education.parity<-chisq.test(table(education,parity)) chi.age.parity<-chisq.test(table(a...

Add OTP parity table. diff -urdpNX /usr/share/dontdiff -x Makefile dovecot.vanilla/src/lib-otp/otp-parity.c dovecot/src/lib-otp/otp-parity.c --- dovecot.vanilla/src/lib-otp/otp-parity.c 1970-01-01 03:00:00.000000000 +0300 +++ dovecot/src/lib-otp/otp-parity.c 2006-06-23 13:44:31.161891112 +0400 @@ -0,0 +1,29 @@ +...

...ays its recogized. I did "ln -s /dev/ttyACM0 /dev/ttyS4" this works. I then did "cu -l /dev/ttyS4" type "AT" and I get OK... looking good. When I "ATDT my number" I get a connection at 1200 baud (which I should) and funny characters... I thought looks like a parity thing. I then did "cu -e -l /dev/ttyS4" type "AT" and I get OK... Now when I do "ATDT my number" I get a connection at 1200 baud and I get readable characters. In the past internal PCI modems I never had to do anything special, just the cu -l /dev/ttyS4. I thought mo...

It is some time that I using AirMail3 with wine. I have the latest version of Wine but after I configure the Ports from ttyR0 to ttyR7 and running AirMail3 this application is not able to comunicate using the equivalent COM1 .... COM4 ports. I'm not sure if Wine is converting correctly ttyR0 to COM1 and so forth. The result is that for the Hurricane season I can NOT use E-Mail under

...Mounting ZFS filesystems: (1/1) NOTICE: IRQ20 is shared NOTICE: IRQ21 is shared NOTICE: IRQ22 is shared Any ideas? Stack Trace (note: I''ve done this a few times and its always "/pci at 0,0/pci10de,376 at a/pci1033,125 at 0,1") --------------- ATA UDMA data parity error SUNW-MSG-ID: SUNOS-8000-0G, TYPE: Error, VER: 1, SEVERITY: Major EVENT-TIME: 0x478f39ab.0x160dc688 (0x5344bb5958) PLATFORM: i86pc, CSN: -, HOSTNAME: san SOURCE: SunOS, REV: 5.11 snv_78 DESC: Errors have been detected that require a reboot to ensure system integrity. See http://www.sun.com/ms...

Hi all Having managed ZFS for about two years, I want to post a wishlist. INCLUDED IN ZFS - Mirror existing single-drive filesystem, as in ''zfs attach'' - RAIDz-stuff - single and hopefully multiple-parity RAID configuration with block-level checksumming - Background scrub/fsck - Pool-like management with multiple RAIDs/mirrors (VDEVs) - Autogrow as in ZFS autoexpand NOT INCLUDED IN CURRENT ZFS - Adding/removing drives from VDEVs - Rebalancing a pool - dedup This may be a long shot, but can someon...

Hi, Anyone tried netcell products on Centos 3 or 4? They claim driverless operation under WinXP, but in linux the only doc that is related with CentOS would be the Fedora core 2 (http://www.netcell.com/support/Fedora_Core2_readme.txt) and requires a kernel rebuild. I'd like to know if it would be possible to install CentOS directly on drives on such a card, without needing a build

...bout it. SuSE mentions "hwprobe=-pci" but, as far as I know, CentOS doesn't use it. This does stop the machine from booting (mounting /) quite a few times. Logs: SCSI subsystem initialized sym0: <895> rev 0x2 at pci 0000:00:13.0 irq 177 sym0: Symbios NVRAM, ID 7, Fast-40, LVD, parity checking sym0: open drain IRQ line driver, using on-chip SRAM sym0: using LOAD/STORE-based firmware. sym0: SCSI BUS has been reset. scsi0 : sym-2.1.18j Using cfq io scheduler Vendor: WDIGTL Model: WDE9180 ULTRA2 Rev: 1.30 Type: Direct-Access ANSI SCSI revision: 02 s...

I'm using Wine 1.0 on Puppy Linux 3.01 I wrote an application for windows which uses serial communication and I like to use this on linux. Every thing works well, but if I set unsuitable communication parameters (e.g. different baudrates for sender/receiver) wine shows no framing or parity errors. Is there any solution ?

On 04/05/2011 09:00 AM, John R Pierce wrote: > > AFAIK, no standard raid modes verify parity on reads, as this would > require reading the whole slice for every random read. Only raid > systems like ZFS that use block checksuming can verify data on reads. > parity (or mirrors) are verified by doing 'scrubs' > > Further, even if a raid DID verify parity/mirroring on...

I''m really glad the JSON changes got in, many thanks to all involved, committers and contributors alike :). But there''s still one feature that''s missing to achieve feature parity between the JSON and XML encoding/conversion. And that is the abililty to say in your controller: @authors = Author.find(:all) render :json => @authors.to_json(:only => :name) Please check out this patch that adds this: http://dev.rubyonrails.org/ticket/9751 and help verify it and post...

...here. The setup is 8x500GB SATAII drives to start and down the road another 4x750 SATAII drives, the machine will mostly be doing reads and streaming data over GigaE. -I''m under the impression that ZFS+(ZFS2) is similar to RAID6, so for the initial 8x500GB two drives would be sucked into parity so I''d have a 3TB volume with the ability to lose two discs, no? -I can''t add discs to the RAIDz volume so in the future for the 4x750 I''d just do a new RAIDz on them (one disc is for parity) and add it to the ZFS group. -If I do that it won''t write data across b...

...which are all 1TB SATA II drives but each made by a different manufacturer. I am going to guess that these couldn't be used in a RAID 5? Or could they? However could a similar result of 2TBs of data with redundancy be achieved with JBOD? Also regarding RAID 5, three drives of data to one for parity is the max ratio I?believe? I.e. to expand this by adding another data drive, the original parity drive would no longer cover this and another would be required, is this correct? One more question about hot swappable drives, I understand that you can create RAID arrays with and without hot swappab...

...mke2fs. The mke2fs man page says stride=stripe-size Configure the filesystem for a RAID array with stripe-size filesystem blocks per stripe. So stride = size of stripe/blocksize. The size of a stripe is the RAID chunk size * the number of drives in the RAID. My question: are parity disks included in the number of drives, or are only data drives counted? For example, take the example of six drives configured for RAID 5 with a chunk size of 64 and a 4K blocksize: 1. Parity drive included: 64*6/4 = 96 2. Parity drive excluded: 64*5/4 = 80 Which is correct? Thanks. Tod --...

Hi, I have a small question about the depth of scrub in a raidz/2/3 configuration. I''m quite sure scrub does not check spares or unused areas of the disks (it could check if the disks detects any errors there). But what about the parity? Obviously it has to be checked, but I can''t find any indications for it in the literature. The man page only states that the data is being checksummed and only if that fails the redundancy is being used. Please tell me I''m wrong ;) But what I''m really targeting with my...

Hi there, i''m building a small NAS with 5x1TB Disks. The disks contains at the moment some data, ntfs as the fs and aren''t a raid. Now my im wondering if its possible to add the parity later. So that i add step by step one disk to the pool. And when i add the last disk, i enable the parity. (i have only one another 1 tb disk to backup the files) Thank you for you replies and sorry for my bad english. Robert Hoppe

I''m trying to get maybe 200 MB/sec over NFS for large movie files (need large capacity to hold all of them). Are there any rules of thumb on how much RAM is needed to handle this (probably RAIDZ for all the disks) with zfs, and how large a server should be used? The throughput required is not so large, so I am thinking an X4100 M2 or X4150 should be plenty. This message posted from

...leA Couldn't open device 'com4'! fixme:dosfs:DOSFS_OpenDevice device open COM3 not supported (yet) err:file:CreateFileA Couldn't open device 'com3'! trace:comm:GetCommState handle 132, ptr 0x40596080 trace:comm:GetCommState OK trace:comm:GetCommState bytesize 8 baudrate 110 fParity 0 Parity 0 stopbits 1 trace:comm:GetCommState ~IXON ~IXOFF trace:comm:GetCommState CRTSCTS trace:comm:BuildCommDCBAndTimeoutsA (com2:115200,n,8,1,0x40596080,(nil)) trace:comm:BuildCommDCB16 (com2:115200,n,8,1), ptr 0x40596004 trace:comm:BuildCommDCB16 baudrate (110) trace:comm:BuildCommDCB16 parity...

...e" (really embedded firmware) RAID is for Windows servers, > since MS Windows has awful integrated software raid (aka 'dynamic disk', > truly a mess). With Linux, I'd rather use LVM, with BSD, ZFS. "Hardware RAID" can very well include a controller with dedicated parity processing, battery/flash backed write caching and other tangible benefits. -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education?

I want to create native types (despite that fact that apparently nobody wants to) to manage a variety of resources under a common namespace. However, I can''t seem to get the namespacing going right. With a defined type, I can do this: define backup_ninja::config(blah, baz) { ... } But that''s not much use to me, as a defined type just isn''t going to cut the mustard