similar to: ZFS volume Block Size & Record Size

Author: eschrock Repository: /hg/zfs-crypto/gate Revision: 8c1e3b54454c3c995f38d9fbb614dfef27d153e9 Log message: 6347421 Trying to set volblocksize on existing volume gives an unexpected error 6347492 snapshots should not pretend to have real properties Files: update: usr/src/common/zfs/zfs_prop.c

Dear all, Background: I have a ZFS volume with the incorrect volume blocksize for the filesystem (NTFS) that it is supporting. This volume contains important data that is proving impossible to copy using Windows XP Xen HVM that "owns" the data. The disparity in volume blocksize (current set to 512bytes!!) is causing significant performance problems. Question : Is there a way to

Just installed Nexenta and I''ve been playing around with zfs. root at hzsilo:/tank# uname -a SunOS hzsilo 5.11 NexentaOS_20070105 i86pc i386 i86pc Solaris root at hzsilo:/tank# zfs list NAME USED AVAIL REFER MOUNTPOINT home 89.5K 219G 32K /export/home tank 330K 1.78T 51.9K /tank tank/iscsi_luns 147K

What does it mean for the reported value of a zvol volsize to be less than the product of used and compressratio? For example, # zfs get -p all home1/home1mm01 NAME PROPERTY VALUE SOURCE home1/home1mm01 type volume - home1/home1mm01 creation 1254440045 - home1/home1mm01 used 14902492672

I posted this to the forums a little while ago but I believe the list was split at the time: Does anyone have any recommendations for changing the ZFS volblocksize when creating zfs volumes to serve as VMFS backing stores? I''ve seen several people recommend that the volblocksize be set to 64k in this situation- but without much explanation. What are the advantages and disadvantages to

Hi, I am trying to understand the use of volblocksize in emulated volumes. If I create a volume in pool and I want a database engine to read and write, say 16K blocks. Should I then set volblocksize to 16K ? Regards, Patrik This message posted from opensolaris.org

Hi all! First off, if this has been discussed, please point me in that direction. I have searched high and low and really can''t find much info on the subject. We have a large-ish (200gb) UFS file system on a Sun Enterprise 250 that is being shared with samba (lots of files, mostly random IO). OS is Solaris 10u3. Disk set is 7x36gb 10k scsi, 4 internal 3 external. For several

Hello all... I''m migrating a nfs server from linux to solaris, and all clients(linux) are using read/write block sizes of 8192. That was the better performance that i got, and it''s working pretty well (nfsv3). I want to use all the zfs'' advantages, and i know i can have a performance loss, so i want to know if there is a "recomendation" for bs on nfs/zfs, or

Hi ZFS Team, I have a couple of questions... Assume that the maximum slab size that ZFS supports is x. (I am assuming there is a maximum.) An application does a (single) write(2) for 2x bytes. Does ZFS/COW guarantee that either all the 2x bytes are persistent or none at all? Consider a case where there is a panic after x bytes has gone to disk and the change propagated to the uber block. Do

Hi, ZFS experts, From ZFS release notes, " Solaris 10 6/06 and Solaris 10 11/06: Do Not Place the Root File Systemof a Non-Global Zone on ZFS. The zonepath of a non-global zone should not reside on ZFS for this release. This action might result in patching problems and possibly prevent the system from being upgraded to a later Solaris 10 update release." So my question is, do we

Author: maybee Repository: /hg/zfs-crypto/gate Revision: fc2b4ea43f2c90b103d940d192c1e7f2306f9939 Log message: 6355162 ''zfs restore -d'' should not succeed upon a volume 6368561 zfs panic at zfs:zfsctl_snapdir_inactive() 6374110 ZFS Panic in zfs_lookup() during snapshot creation Files: update: usr/src/lib/libzfs/common/libzfs_dataset.c update:

Hi, It would be great help to understand the how the actually allocated disk space keeps getting reduced as shown below (I understand different filesystem/volume management implementation would have different logic to set aside some space reserved for meta-data etc). If the following can be explained it would really help. I allocated 80*25G luns to a solaris server (clariion luns). (80*25

I ''ve a ZFS volume exported to one of my Ldom .. but now the Ldom does not see the data and complaing missing device .. is there any way i can mount or see what in the volume ... or check if the volume got corrupted or some other issue ? -- This message posted from opensolaris.org

Hi, I just found out that ZFS triggers a kernel-panic while switching a mounted volume into read-only mode: The system is attached to a Symmetrix, all zfs-io goes through Powerpath: I ran some io-intensive stuff on /tank/foo and switched the device into read-only mode at the same time (symrdf -g bar failover -establish). ZFS went ''bam'' and triggered a Panic: WARNING: /pci at

I have recently upgraded from NexentaStor 2 to NexentaStor 3 and somehow one of my volumes got corrupted. Its showing up as a socket. Has anyone seen this before? Is there a way to get my data back? It seems like it''s still there, but not recognized as a folder. I ran zpool scrub, but it came back clean. Attached is the output of #zdb data/rt 2.0K sr-xr-xr-x 17 root root 17 Jul

sbdadm can be used with a regular ZFS file or a ZFS block device. Is there an advatage to using a ZFS block device and exporting it to comstar via sbdadm as opposed to using a file and exporting it? (e.g. performance or manageability?) Also- let''s say you have a 5G block device called pool/test You can resize it by doing: zfs set volsize=10G pool/test However if the device was already

Anyone have idea how to create ZFS pool and volumes during jumstart instalation ? (I''m using JumpStart Enterprise Toolkit) kloczek

Hi all, I have 2 questions about ZFS. 1. I have create a snapshot in my pool1/data1, and zfs send/recv it to pool2/data2. but I found the USED in zfs list is different: NAME USED AVAIL REFER MOUNTPOINT pool2/data2 160G 1.44T 159G /pool2/data2 pool1/data 176G 638G 175G /pool1/data1 It keep about 30,000,000 files. The content of p_pool/p1 and backup/p_backup

So, I am starting to code this CAS block squashing test and I am wondering if this is something that would more likely extend open Solaris (it does require additional info in zfs metadata that is currently reserved space for future, ie zfs revision++) or if I should code against the FUSE tree where it would could be imported. What type of contribution style is open Solaris? Is zfs

Hi, I was wondering about the ARC and its interaction with the VM pagecache... When a file on a ZFS filesystem is mmaped, does the ARC cache get mapped to the process'' virtual memory? Or is there another copy? -Manoj