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btrfs experiences?

From: Joseph Simoneau 
------------------------------------------------------
I know the right answer is to join their making list and make backups, but
has anyone used it for real (home our work) deployments?

Any problems?

Anything you would suggest to stress test it?

If love to use it for a home NAS and backup system; and initial tests (raid
6 data, raid 1 metadata) seem OK.

-js

=============================================================== From: "Alex Smith (K4RNT)" ------------------------------------------------------ I would use ZFS for your particular application, it's RAID-Z is a pretty well designed system, giving you potentially better peformance and more resilience in a backup system. It also has SMB support built-in, without the need to tweak with a Samba config file. https://en.wikipedia.org/wiki/ZFS " ' With the first link, the chain is forged. The first speech censured, the first thought forbidden, the first freedom denied, chains us all irrevocably.' Those words were uttered by Judge Aaron Satie as wisdom and warning... The first time any man's freedom is trodden on we=E2=80=99re all damaged." - Jean-Luc Picard, quoting Judge Aaron Satie, Star Trek: TNG episode "The Drumhead" - Alex Smith - Dulles Technology Corridor (Chantilly/Ashburn/Dulles), Virginia USA t

=============================================================== From: Dave Brockman ------------------------------------------------------ -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Say what? Regards, dtb - -- "Some things in life can never be fully appreciated nor understood unless experienced firsthand. Some things in networking can never be fully understood by someone who neither builds commercial networking equipment nor runs an operational network." RFC 1925 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTJI7LAAoJEMP+wtEOVbcd0TQIAIkpBytPjD+iZEONzzMZ+4Lj 9I4iSmcxDVRXBjkJV9PSysfI594+9TKOQwB/qmiGHD6fBqkkJbqgVCPJ1sgjh0YW fern94dBdXwGwbfLiPQKaKQmPSlmt2/h1hvVkEgGvTdx8QotvxUr0vqy2qKgF6q7 4i3q4KPExHvYswWnkgGQHinwp+HC1Ler3yaSwcQwJY3C8KEbVn7/9U+gMk1nqN/g gTuo3qAKdWpSAYr6bItBWqGsdITK1W43fA/cGSPO6McH8WR0O23W2sw+jUf7FQyG 6fXs6DegvAE9dkG9ozU0jy66OpJC4o1z/OOskTifWrhlAdkV6x7/EpJFrb7HghY= =k3NP -----END PGP SIGNATURE-----

=============================================================== From: Dave Brockman ------------------------------------------------------ -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 You must mean the kernel CIFS server. Which isn't available across all ZFS implementations (or OSes) unfortunately. Regards, dtb - -- "Some things in life can never be fully appreciated nor understood unless experienced firsthand. Some things in networking can never be fully understood by someone who neither builds commercial networking equipment nor runs an operational network." RFC 1925 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTJI/tAAoJEMP+wtEOVbcdcskH/RP3RmxUs2gEXlMO9nM3s4p7 q8QVnbOo/M0/3VHzEw4nmvR2jMZW0BTQddc8v+fupkRNW469VfPxWBvoPTd4kZC6 ZN+sopT4hPEzOlDwQzHiUttNb74t7jb+96NuxgZ1yAUrLdovJCBqrYhgRMsnfnw5 c2DVlxscunIKWnM5diZjs3qrCOsClD05Tdo3se1KdEUsOB45klS53avvPSnfhczz xe3msbhlz80Chiu5tcbBhGNYB5kWrcK3OitTfZJl1gCpGgRAn0c++iaOUE8qwnW7 M12gGkOuAFly04QcchXTvcnGjKP2cjfCixPIgy1Xl+wIVMnV1PJhc4CUENE7PuQ= =ZB8x -----END PGP SIGNATURE-----

=============================================================== From: Joseph Simoneau ------------------------------------------------------ Samba isn't a requirement... no windows boxes on the radar except single-purpose VMs (no real storage) and things that are supposed to break. Everything I actually need is relatively filesystem agnostic (NFS, DNLA, rsync). ZFS is on my radar, but the more mdadm-like management of btrfs is what's winning me over, at least in theory. Party of the project is archiving DVDs and blu-rays, and I'd rather not have to grow the array by waiting for disks to die or stripping in new vdevs. I don't think performance is a huge concern, the throughout I'm getting in all-virtual tests is plenty for a couple HD streams, and incremental backups can take all night for all I care. VM storage is probably going to be handled separately, and that's the more performance-intensive task.

=============================================================== From: Lynn Dixon ------------------------------------------------------ What about GlusterFS ? I have tinkered with it a bit and it seems awesome. GFS is also pretty neat On Mar 15, 2014 10:40 PM, "Joseph Simoneau" wrote:

=============================================================== From: "Alex Smith (K4RNT)" ------------------------------------------------------ ZFS allows you to add disks on the fly, and RAID-Z removes the requirement of striping in new drives. I haven't used it in a large enough environment as your application, but I have not had the best experience with LVM. There is plenty of documentation that will help you in your research. It's even available on FreeBSD or Illumos (nee OpenSolaris). It's also I believe the default filesystem on FreeNAS. " ' With the first link, the chain is forged. The first speech censured, the first thought forbidden, the first freedom denied, chains us all irrevocably.' Those words were uttered by Judge Aaron Satie as wisdom and warning... The first time any man's freedom is trodden on we=E2=80=99re all damaged." - Jean-Luc Picard, quoting Judge Aaron Satie, Star Trek: TNG episode "The Drumhead" - Alex Smith - Dulles Technology Corridor (Chantilly/Ashburn/Dulles), Virginia USA k. Ds n o

=============================================================== From: flushy@flushy.net ------------------------------------------------------ Quoting "Alex Smith (K4RNT)" : My biggest issue with ZFS is the inability to shrink volumes or migrate physical disks on the fly. I can do both with MD+lvm2 --b

=============================================================== From: William Roush ------------------------------------------------------ Well lets be honest, that has nothing to do with MD and entirely to do with LVM... Which you can throw LVM on a zvol if you wanted to have those features while retaining the robustness of ZFS. For me my biggest gripe with ZFS is that it isn't cluster aware. Would make workplace implementations of HA ZFS much more straight forward and affordable. William Roush william.roush@roushtech.net 423-463-0592 http://www.roushtech.net/blog/

=============================================================== From: William Roush ------------------------------------------------------ Err and I guess you could technically migrate between physical disks using some terrible block device trickery, sparse files and whatnot on ZFS... :\ I may have done that before. William Roush william.roush@roushtech.net 423-463-0592 http://www.roushtech.net/blog/