2,434 reputation
11129
bio website duckies.org
location United States
age 33
visits member for 5 years, 6 months
seen Dec 9 at 20:46
I like your mom.

May
30
comment Upgrading server motherboard while maintaining 12 SATA ports
Well, if you truly only need 8 additional ports (on top of the 4 from the motherboard) you can get by with two SAS 4x channels instead of four. IBM M1015 is an LSI rebadge and can be had for $100.
Apr
26
comment How to remove the OpenSolaris ZFS dump device
Since you're just trying to reclaim the space, can you resize the dump volume to something silly small like zfs set volsize=1M rpool/dump?
Apr
26
comment How to remove the OpenSolaris ZFS dump device
I haven't tried this myself, but if you read the link it suggest that even you don't have a suitable swap device, telling it to use swap will set it to 'none' so it's no longer using your dump device. Can't hurt to try.
Mar
16
comment mpt2sas1: log_info(0x31120303): Disks dropped from RAID
Have you tried flashing the new LSI P15 firmware and corresponding BIOS? LSI and OEMs are notoriously bad for shipping old firmware on cards.
Dec
7
comment zfs rename/move root filesystem into child
@USDMatt: You are totally right. This works perfectly if you're working with subfileystems (tank/a -> tank/a@snap -> tank/asnap-clone -> tank/renamed-asnap-clone) but not if you're working at the root of the zpool. Feels like a bug, chalk it up as another reason to never fill the root filesystem of your pool).
Dec
6
comment Undelete ZFS file shared by Samba
@TomPaine: Here's an example (albeit from 2008) of how one might used zdb/mdb to find the older uberblock and recover the orphaned file. Probably not too practical for single file undelete, but I had an unmountable raidz pool which was mostly recoverable after winding back past a dozen corrupt uberblocks. Given infinite time I don't think I could've ever done it, but with the help of a ZFS uber-guru like George Wilson such things are possible. mbruning.blogspot.com/2008/08/…
Dec
3
comment zfs pool error, how to determine which drive failed in the past
pfexec is like sudo in this case. You're just running stmsboot -e as root.
Nov
13
comment Reset Root Password on Solaris 10
Another alternative is the OpenIndiana LiveCD. Since it's an Illumos (Solaris) kernel it also has ZFS/UFS support just like FreeBSD.
Sep
19
comment Netboot Intel Macs without BSDP
Ah, that sounds promising, I'll give it a shot. Especially if I could just create a local hidden partition with this. Thanks!
May
14
comment Migrate a zpool to a zfs partition
there is no such thing as a ZFS "partition" This isn't true. ZFS pools can be created with whole disks, partitions or even files as the pool members. There are plenty of good reasons to not use partitions (ZFS can leverage drive cache, grub is harder to setup, etc) but that doesn't mean you can't do it.
Jan
6
comment How good is the noise reduction on an XRackpro2?
I don't have a decibel meter, but it's done a great job at dampening the sound from my gear. When it was in a normal Dell rack you could hear fans humming through my office door in the hallway and people would occasionally comment on the noise. Now no one notices the hum.
Aug
11
comment Netboot Intel Macs without BSDP
Nope, my servers and clients are on the same subnet so (AFAIK) there's no routing involved.
Aug
11
comment Netboot Intel Macs without BSDP
Ooops. Thanks for catching my typo. It still doesn't work though, just a blinking globe on boot.
Aug
11
comment Netboot Intel Macs without BSDP
Sadly, I get the following error: Netboot scheme bdsp not supported on EFI systems
May
2
comment How can you reduce ambient noise from servers?
Seconded. Although the XRackPro2 12U is a little steep at $2k, remember it will outlive your UPS/Server/Disk shelves.
Apr
14
comment Can I re-attach a (ZFS) EBS volume when starting a new EC2 instance?
Unless you're running an old version Solaris 10, the pool will import just even when SSDs aren't present. L2ARC devices are safe caches, they are always empty on mount. Assuming a clean unmount (with or without export) ZFS Intent Log (ZIL) devices will also have no useful data. The ZIL is only ever read following a crash/dirty unmount so any uncommitted transactions can be replayed.
Feb
25
comment Disk names in Solaris 10 for ZFS: SAS WWN instead of c0t0d0
You got it. pfexec stmsboot -e is all it took.
Feb
8
comment Disk names in Solaris 10 for ZFS: SAS WWN instead of c0t0d0
I thought this might be the case. Any one know if the older controller can be coaxed into using the WWN for disk identification?
Feb
8
comment Disk names in Solaris 10 for ZFS: SAS WWN instead of c0t0d0
Not true, my Western Digital RE2 (160GB, 1TB), RE4 (2TB) and Hitachi UltraStar (1TB) all of which are SATA have WWN printed on the label.
Dec
21
comment ZFS storage in an Active Directory environment?
No, you can definitely rollback, even with block filesystems shared via iSCSI. The only limitation is that ZFS can only rollback to the most recent snapshot, so if you have intermediate snapshots you have to destroy them first. In most cases you'll just want to clone and share that instead though.