similar to: lazy zfs destroy

I''m playing around with snv_128 on one of my systems, and trying to see what kinda of benefits enabling dedup will give me. The standard practice for reprocessing data that''s already stored to add compression and now dedup seems to be a send / receive pipe similar to: zfs send -R <old fs>@snap | zfs recv -d <new fs> However, according to the man page,

On Sun, Dec 27, 2009 at 12:55 AM, Stephan Budach <stephan.budach at jvm.de> wrote: > Brent, > > I had known about that bug a couple of weeks ago, but that bug has been files against v111 and we''re at v130. I have also seached the ZFS part of this forum and really couldn''t find much about this issue. > > The other issue I noticed is that, as opposed to the

Hi, I''m trying to boot NV76 and Xen/xVM on a Sun X4600 but are having trouble with the system crashing hard in the process. Booting NV76 on metal works fine. It seems to be somewhere around when it would start X that the whole system suddenly resets and start BIOS init again. There''s no error messages in the syslog but I get the message "A Hyper Transport sync flood error

Is there an easy way to find out what datasets have dedup''d data in them. Even better would be to discover which files in a particular dataset are dedup''d. I ran # zdb -DDDD which gave output like: index 1055c9f21af63 refcnt 2 single DVA[0]=<0:1e274ec3000:2ac00:STD:1> [L0 deduplicated block] sha256 uncompressed LE contiguous unique unencrypted 1-copy size=20000L/20000P

Hi All, Is there a way to tune the zfs prefetch on a per pool basis? I have a customer that is seeing slow performance on a pool the contains multiple tablespaces from an Oracle database, looking at the LUNs associated to that pool they are constantly at 80% - 100% busy. Looking at the output from arcstat for the miss % on data, prefetch and metadata we are getting around 5 - 10 % on data,

Hi, Created a zpool with 64k recordsize and enabled dedupe on it. zpool create -O recordsize=64k TestPool device1 zfs set dedup=on TestPool I copied files onto this pool over nfs from a windows client. Here is the output of zpool list Prompt:~# zpool list NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT TestPool 696G 19.1G 677G 2% 1.13x ONLINE - When I ran a

Hi, We are considering using a ZFS based storage as a staging disk for Networker. We''re aiming at providing enough storage to be able to keep 3 months worth of backups on disk, before it''s moved to tape. To provide storage for 3 months of backups, we want to utilize the dedup functionality in ZFS. I''ve searched around for these topics and found no success stories,

Dear all, we''re currently looking forward to restructure our hardware environment for our datawarehousing product/suite/solution/whatever. We''re currently running the database side on various SF V440''s attached via dual FC to our SAN backend (EMC DMX3) with UFS. The storage system is (obviously in a SAN) shared between many systems. Performance is mediocre in terms

Hello, I need help here about plockstat on X86 platform (Sun X4600 AMD) # plockstat -A -p 20034 plockstat: processing aborted: Abort due to systemic unresponsiveness # plockstat -e 5 -s 10 -A -x bufsize=100k -x aggsize=20m -p 20034 plockstat: processing aborted: Abort due to systemic unresponsiveness # ps -ef | grep 20034 algodev 20034 1 2 07:00:54 ? 86:17

I created a zfs pool with dedup with the following settings: zpool create data c8t1d0 zfs create data/shared zfs set dedup=on data/shared The thing I was wondering about was it seems like ZFS only dedup at the file level and not the block. When I make multiple copies of a file to the store I see an increase in the deup ratio, but when I copy similar files the ratio stays at 1.00x. -- This

Hello Friends I''d like to ask about how many interfaces can I configure on my domU. I''ve one x4600 (Sun Fire) with 32GB RAM and 16 CPU''s AMD Opteron, with RedHat AS 4up5, and I created two guest machines with 4 CPU''s each, 2 NICs and 2GB RAM. So, I needed set 3 IP address then I set one IP in eth0, another in eth0:1 (alias) and another in eth1. On first

Hello, I''m debating an OS change and also thinking about my options for data migration to my next server, whether it is on new or the same hardware. Migrating to a new machine I understand is a simple matter of ZFS send/receive, but reformatting the existing drives to host my existing data is an area I''d like to learn a little more about. In the past I''ve asked about

Greetings, Quick question: I am about to acquire some disks for use with ZFS (currently using zfs-fuse v0.7.0). I''m aware of some 4k alignment issues with Western Digital advanced format disks. As far as I can tell, the Hitachi Deskstar 7K3000 (HDS723030ALA640) uses 512B sectors and so I presume does not suffer from such issues (because it doesn''t lie about the physical layout

Hi, I was suffering for weeks from the following problem: a zfs dataset contained an automatic snapshot (monthly) that used 2.8 TB of data. The dataset was deprecated, so I chose to destroy it after I had deleted some files; eventually it was completely blank besides the snapshot that still locked 2.8 TB on the pool. ''zfs destroy -r pool/dataset'' hung the machine within seconds

I have been tasked with installing statistical and other data analysis applications on a new Sun Fire X4600 M2 x64 server that came equipped with eight AMD dual core Opteronn 64-bit processors. It is running the 64-bit version of Suse Linux 9. I have read through the installation docs, and I guess I don't understand what to do, or even how to identify which version, if any, of this

Just successfully installed SLES9.3-32bit as file-backended HVM domU. Everything went OK, the distributive partitioned its "harddisk" into root and swap OK, have its grub installed into sda boot sector, but I could not make to boot no one single first time after installation. Every domU boot gives the following screen for a short time and dies: Booting from Hard Disk... Boot from

The main Xen mailing list ("xen-users") generally advises users to limit the memory on dom0 to 2Gb or less. Apparently the general version of Xen has troubles with this. What''s the corresponding advice for the Xen in OpenSolaris, Nevada b87 in particular? I''ve got an X4600 with 32Gb of physical memory on it. I was originally planning to have dom0 be the general-

Hi all Has anyone done any testing with dedup with OI? On opensolaris there is a nifty "feature" that allows the system to hang for hours or days if attempting to delete a dataset on a deduped pool. This is said to be fixed, but I haven''t seen that myself, so I''m just wondering... I''ll get a 10TB test box released for testing OI in a few weeks, but before

Hello, I have a ZFS filesystem (zpool version 26 on Nexenta CP 3.01) which I''d like to rollback but it''s having an existential crisis. Here''s what I see: root at bambi:/# zfs rollback bambi/faline/userdocs at AutoD-2010-09-28 cannot rollback to ''bambi/faline/userdocs at AutoD-2010-09-28'': more recent snapshots exist use ''-r'' to

Suppose I have a storage server that runs ZFS, presumably providing file (NFS) and/or block (iSCSI, FC) services to other machines that are running Solaris. Some of the use will be for LDoms and zones[1], which would create zpools on top of zfs (fs or zvol). I have concerns about variable block sizes and the implications for performance. 1.