search for: mkfile

...idea, but hey, does it hurt to ask?**** I have been thinking, and would it be a good idea, to have on the 2TB drives, say 1TB or 500GB "files" and then mount them as mirrored? So basically, have a 2TB hard drive, set up like: (where drive1 and drive2 are the paths to the mount points) Mkfile 465gb /drive1/drive1part1 Mkfile 465gb /drive1/drive1part2 Mkfile 465gb /drive1/drive1part3 Mkfile 465gb /drive1/drive1part4 Mkfile 465gb /drive2/drive2part1 Mkfile 465gb /drive2/drive2part2 Mkfile 465gb /drive2/drive2part3 Mkfile 465gb /drive2/drive2part4 (I use 465gb, as 2TB = 2trillion bytes,...

I enjoy the convenience of mkfile command found in Irix and BSD based distros. This command allows me to make files of any size; usage: mkfile [-nv] size[b|k|m|g] filename ... I've looked here and there and can't seem to find it for Centos. Any one have ideas on were I can get at least the source for it? I got someth...

Hey, guys I just do the test for use loop device as vdev for zpool Procedures as followings: 1) mkfile -v 100m disk1 mkfile -v 100m disk2 2) lofiadm -a disk1 /dev/lofi lofiadm -a disk2 /dev/lofi 3) zpool create pool_1and2 /dev/lofi/1 and /dev/lofi/2 4) zpool export pool_1and2 5) zpool import pool_1and2 error info here: bash-3.00# zpool import pool1_1and2 cannot import ''p...

...zfs. This worked for both a standard UFS slice and a SVM mirror using zfs. Is there something that I''m doing wrong, or is this not yet supported on ZFS? Note this is Solaris 10 Update 3, but I don''t think that should matter.. thanks, peter Using ZFS ======== HON hcb116 ~ $ mkfile -n 1g /var/adm/crash/dump-file HON hcb116 ~ $ dumpadm -d /var/adm/crash/dump-file dumpadm: dumps not supported on /var/adm/crash/dump-file Using UFS ======== HON hcb115 ~ $ mkfile -n 1g /data/0/test HON hcb115 ~ $ dumpadm -d /data/0/test Dump content: kernel pages Dump device: /da...

Currently I''m trying to figure out the best zfs layout for a thumper wrt. to read AND write performance. I did some simple mkfile 512G tests and found out, that per average ~ 500 MB/s seems to be the maximum on can reach (tried initial default setup, all 46 HDDs as R0, etc.). According to http://www.amd.com/us-en/assets/content_type/DownloadableAssets/ArchitectureWP_062806.pdf I would assume, that much more and at least in...

Adam, With the blog entry[1] you''ve made about gzip for ZFS, it raises a couple of questions... 1) It would appear that a ZFS filesystem can support files of varying compression algorithm. If a file is compressed using method A but method B is now active, if I truncate the file and rewrite it, is A or B used? 2) The question of whether or not to use bzip2 was raised in the

...982ops/s 0.0mb/s 0.0ms/op 27us/op-cpu 12746: 65.266: IO Summary: 8088 ops 8017.4 ops/s, (997/982 r/w) 155.6mb/s, 508us cpu/op, 0.2ms 12746: 65.266: Shutting down processes filebench>[/i] I expected to see some higher numbers really... a simple "time mkfile 16g lala" gave me something like 280Mb/s. Would anyone comment on this? TIA, Tom This message posted from opensolaris.org

...0t2d0s4 ONLINE 0 0 0 Then i created a ZFS with no extra options: # zfs create mypool/zfs01 # zfs list NAME USED AVAIL REFER MOUNTPOINT mypool 106K 27,8G 25,5K /mypool mypool/zfs01 24,5K 27,8G 24,5K /mypool/zfs01 When I now send a mkfile on the new FS, the performance of the whole system breaks down near zero: # mkfile 5g test last pid: 25286; load avg: 3.54, 2.28, 1.29; up 0+01:44:26 16:16:24 66 processes: 61 sleeping, 3 running, 1 zombie, 1...

Hi all, How to reserve a space on a zfs filesystem? For mkfiel or dd will write data to the block, it is time consuming. whiel "mkfile -n" will not really hold the space. And zfs''s set reservation only work on filesytem, not on file? Could anyone provide a solution for this? Thanks very much Vincent

Hi, I am able to reproduce the following panic on a number of Solaris 10 06/06 boxes (Sun Blade 150, V210 and T2000). The script to do this is: #!/bin/sh -x uname -a mkfile 100m /data zpool create tank /data zpool status cd /tank ls -al cp /etc/services . ls -al cd / rm /data zpool status # uncomment the following lines if you want to see the system think # it can still read and write to the filesystem after the backing store has gone. #date #sleep 60 #date #zpool sta...

...a Sun V240 with 2 CPUS and 8 GB of memory. This V240 is attached to a 3510 FC that has 12 x 300 GB disks. The 3510 is configured as HW RAID 5 with 10 disks and 2 spares and it''s exported to the V240 as a single LUN. We create iso images of our product in the following way (high-level): # mkfile 3g /isoimages/myiso # lofiadm -a /isoimages/myiso /dev/lofi/1 # newfs /dev/rlofi/1 # mount /dev/lofi/1 /mnt # cd /mnt; zcat /product/myproduct.tar.Z | tar xf - and we finally use mkisofs to create the iso image. UFS performance ---------------------- We created a UFS file system on the above LUN...

Well, I''ve searched my brains out and I can''t seem to find a reason for this. I''m getting bad to medium performance with my new test storage device. I''ve got 24 1.5T disks with 2 SSDs configured as a zil log device. I''m using the Areca raid controller, the driver being arcmsr. Quad core AMD with 16 gig of RAM OpenSolaris upgraded to snv_134. The zpool

...about variable block sizes and the implications for performance. 1. http://hub.opensolaris.org/bin/view/Community+Group+zones/zoss Suppose that on the storage server, an NFS shared dataset is created without tuning the block size. This implies that when the client (ldom or zone v12n server) runs mkfile or similar to create the backing store for a vdisk or a zpool, the file on the storage server will be created with 128K blocks. Then when Solaris or OpenSolaris is installed into the vdisk or zpool, files of a wide variety of sizes will be created. At this layer they will be created with variable...

...128KB (default) VxFS Block Size: 8KB(default) The only thing different in setup for the ZFS vs. VxFS tests is the file system and an array support module (ASM) module was installed for the RAID on the VxFS test case. Test Case: Run ''iostat'', then write a 1GB file using ''mkfile 1g testfile'' and then run iostat again. ZFS Test Results: The KB written per second averaged around 250KB. VxFS Test Results: The KB written per second averaged around 70KB. When I fixed the ZFS record size to 8KB the KB written per second averaged 110KB. My questions by be too general...

Solaris in 32-bit mode has a 1TB device limit. UFS filesystems in 32-bit mode also have a 1TB limit, even if using a logical volume manager to span smaller than 1TB devices. So, what kind of limit does ZFS have when running under 32-bit Solaris? -- Erik Trimble Java System Support Mailstop: usca14-102 Phone: x17195 Santa Clara, CA

Hi all, I received my SSD, and wanted to test it out using fake zpools with files as backing stores before attaching it to my production pool. However, when I exported the test pool and imported, I get an error. Here is what I did: I created a file to use as a backing store for my new pool: mkfile 1g /data01/test2/1gtest Created a new pool: zpool create ziltest2 /data01/test2/1gtest Added the SSD as a log: zpool add -f ziltest2 log c7t1d0 (c7t1d0 is my SSD. I used the -f option since I had done this before with a pool called ''ziltest'', same results) A ''zpool s...

...o, I mentioned this problem a year ago here and filed 6792701 and I know it has been discussed since. It should have been fixed in snv_118, but I can still trigger the same problem. This is only triggered if the creation of a large file is aborted, for example by loss of power, crash or SIGINT to mkfile(1M). The bug should probably be reopened but I post it here since some people where seeing something similar. Example and attached zdb output: filer01a:/$ uname -a SunOS filer01a 5.11 snv_130 i86pc i386 i86pc Solaris filer01a:/$ zpool create zp...

Hi, Just playing with zfs and the admin manual ... # mkfile 100m /export/zfs/disk1 # zpool create data /export/zfs/disk1 # zfs create data/users # zfs mount -o remount,noatime data/users # zfs get all data/users NAME PROPERTY VALUE SOURCE data/users type filesystem - data/users cr...

Hi, When deploying ZFS in cluster environment it would be nice to be able to have some SSDs as local drives (not on SAN) and when pool switches over to the other node zfs would pick up the node''s local disk drives as L2ARC. To better clarify what I mean lets assume there is a 2-node cluster with 1sx 2540 disk array. Now lets put 4x SSDs in each node (as internal/local drives). Now

We have a Mirror setup in ZFS that''s 73GB (two internal disks on a sun fire v440). We currently are going to attach this system to an Equallogic Box, and will attach an ISCSCI LUN from the Equallogic box to the v440 of about 200gb. The Equallogic Box is configured as a Hardware Raid 50 (two hot spares for redundancy). My question is what''s the best approach to moving the ZFS