similar to: rename(2), atomicity, crashes and fsync()

Hi, there was recently a bug reported against EXT4 that gets triggered by KDE: https://bugs.edge.launchpad.net/ubuntu/+source/linux/+bug/317781 Now I''d like to verify that my understanding of ZFS behavior and implementations is correct, and ZFS is unaffected from this kind of issue. Maybe somebody would like to comment on this. The underlying problem with ext4 is that some kde

Hi all, What is the current preferred method for backing up ZFS data pools, preferably using free ($0.00) software, and assuming that access to individual files (a la ufsbackup/ufsrestore) is required? TIA, -- Rich Teer, SCSA, SCNA, SCSECA, OGB member CEO, My Online Home Inventory URLs: http://www.rite-group.com/rich http://www.linkedin.com/in/richteer

It wouldn''t be proper to start my first post here without congratulations and thanks to the ZFS team for such an impressive piece of work. Anyway, on to my query. I''ve been trying out ZFS, with a particular focus in reducing latency in a specific application. This application has a fair amount of random writing going on in the background (which, of course, ZFS will make

Has anyone worked with a x4500/x4540 and know if the internal raid controllers have a bbu? I''m concern that we won''t be able to turn off the write-cache on the internal hds and SSDs to prevent data corruption in case of a power failure. -- This message posted from opensolaris.org

Is it possible to emulate a unionfs with zfs and zones somehow? My zones are sparse zones and I want to make part of /usr writable within a zone. (/usr/perl5/mumble to be exact) I can''t just mount a writable directory on top of /usr/perl5 because then it hides all the stuff in the global zone. I could repopulate it in the local zone but ugh that is unattractive. I''m hoping

Just posted: http://blogs.sun.com/roch/entry/nfs_and_zfs_a_fine ____________________________________________________________________________________ Performance, Availability & Architecture Engineering Roch Bourbonnais Sun Microsystems, Icnc-Grenoble Senior Performance Analyst 180, Avenue De L''Europe, 38330, Montbonnot Saint

Hi all Is it possible to securely delete a file from a zfs dataset/zpool once it''s been snapshotted, meaning "delete (and perhaps overwrite) all copies of this file"? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 roy at karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et element?rt imperativ

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 hi, i have two systems, A (Solaris 10 update 5) and B (Solaris 10 update 6). i''m using ''zfs send -i'' to replicate changes on A to B. however, the ''zfs recv'' on B is running extremely slowly. if i run the zfs send on A and redirect output to a file, it sends at 2MB/sec. but when i use ''zfs send

I''m working with a Cyrus IMAP server running on a T2000 box under Solaris 10 10/09 with current patches. Mailboxes reside on six ZFS filesystems, each containing about 200 gigabytes of data. These are part of a single zpool built on four Iscsi devices from our Netapp filer. One of these ZFS filesystems contains a number of global and per-user databases in addition to one sixth of the

Hi All ; What is the status of ZFS on linux and what are the kernel''s supported? Regards Mertol <http://www.sun.com/> http://www.sun.com/emrkt/sigs/6g_top.gif Mertol Ozyoney Storage Practice - Sales Manager Sun Microsystems, TR Istanbul TR Phone +902123352200 Mobile +905339310752 Fax +902123352222 Email <mailto:Ayca.Yalcin at Sun.COM> mertol.ozyoney at

Hi All, I am looking at ZFS and I get that they call it RAIDZ which is similar to RAID 5, but what about RAID 10? Isn''t a RAID 10 setup better for data protection? So if I have 8 x 1.5tb drives, wouldn''t I: - mirror drive 1 and 5 - mirror drive 2 and 6 - mirror drive 3 and 7 - mirror drive 4 and 8 Then stripe 1,2,3,4 Then stripe 5,6,7,8 How does one do this with ZFS?

ZFS introduces a new and incompatible ACL interface into Solaris and this seems to be not yet fully completed in addition to the fact that is causes a lot of problems for software that needs to be compatible with Solaris-2.5 like star. Proof for incompatibility: create a file on UFS and set an ACL for this file. Use Sun tar cpf out file to archive this file. Unpack this archive file on ZFS

Wouldn''t it be great if the opensolaris community creates a fs fzfs (for flash zfs) that could be the the filesystem for SDXC cards? Two main point for this are already there Sun is a member of SD Card Association and the code writting smart on a flash should be there as well with stuff of l2arc. I think that could give the opensolaris a more visiblie/ markting in the IT space and would

Why does ZFS report such small directory sizes? For example, take a maildir directory with ten entries: total 2385 drwx------ 8 17121 vmail 10 Jun 8 23:50 . drwx--x--x 14 root root 14 May 12 2006 .. drwx------ 5 17121 vmail 5 May 25 18:16 .Trash drwx------ 5 17121 staff 6 Jun 9 00:01 .testing -rw------- 1 17121 staff 0 Jun

FULL backup to a file zfs snapshot -r rpool at 0908 zfs send -Rv rpool at 0908 > /net/remote/rpool/snaps/rpool.0908 INCREMENTAL backup to a file zfs snapshot -i rpool at 0908 rpool at 090822 zfs send -Rv rpool at 090822 > /net/remote/rpool/snaps/rpool.090822 As I understand the latter gives a file with changes between 0908 and 090822. Is this correct? How do I restore those files? I know

Hi, I was wondering if there have been any conversations with backup vendors like Veritas or EMC regarding better integration with ZFS. While I understand they can use the "native" mode of reading files from the filesystem, it would be great if there were agents that had options like making a snapshot and storing a "zfs backup" datastream that could be used for zfs restore.

Hello everyone, I am trying to take ZFS snapshots (ie. zfs send) and burn them to DVD''s for offsite storage. In many cases, the snapshots greatly exceed the 8GB I can stuff onto a single DVD-DL. In order to make this work, I have used the "split" utility to break the images into smaller, fixed-size chunks that will fit onto a DVD. For example: #split -b8100m

We have finished a beta version of the feature. A webrev for it can be found here: http://cr.illumos.org/~webrev/sensille/fits-send/ It adds a command ''zfs fits-send''. The resulting streams can currently only be received on btrfs, but more receivers will follow. It would be great if anyone interested could give it some testing and/or review. If there are no objections,

My google-fu is coming up short on this one... I didn''t see that it had been discussed in a while ... What is the status of ZFS support for TRIM? For the pool in general... and... Specifically for the slog and/or cache??? -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi all I have a test system with snv134 and 8x2TB drives in RAIDz2 and currently no Zil or L2ARC. I noticed the I/O speed to NFS shares on the testpool drops to something hardly usable while scrubbing the pool. How can I address this? Will adding Zil or L2ARC help? Is it possible to tune down scrub''s priority somehow? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 roy at