Re: [zfs-discuss] Reboots when importing old rpool

2011-05-17 Thread Giovanni Tirloni
On Tue, May 17, 2011 at 6:38 PM, Brandon High wrote: > On Tue, May 17, 2011 at 11:10 AM, Hung-ShengTsao (Lao Tsao) Ph.D. > wrote: >> >> may be do >> zpool import  -R /a rpool > > 'zpool import -N' may work as well. It looks like a crash dump is in order. The system shouldn't panic just because i

Re: [zfs-discuss] Reboots when importing old rpool

2011-05-17 Thread Brandon High
On Tue, May 17, 2011 at 11:10 AM, Hung-ShengTsao (Lao Tsao) Ph.D. wrote: > > may be do > zpool import  -R /a rpool 'zpool import -N' may work as well. -B -- Brandon High : bh...@freaks.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-17 Thread George Wilson
On Tue, May 17, 2011 at 11:48 AM, Jim Klimov wrote: >> So if you bump this to 32k then the fragmented size >> is 512k which tells ZFS to switch to a different metaslab >> once it drops below this threshold. > > Makes sense after some more reading today ;) > > What happens if no metaslab has a bloc

[zfs-discuss] Adjusting the volblocksize for iscsi VMFS backing stores

2011-05-17 Thread Donald Stahl
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

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-17 Thread Jim Klimov
> So if you bump this to 32k then the fragmented size > is 512k which tells ZFS to switch to a different metaslab > once it drops below this threshold. Makes sense after some more reading today ;) What happens if no metaslab has a block this large (or small) on a sufficiently full and fragmente

Re: [zfs-discuss] Reboots when importing old rpool

2011-05-17 Thread Hung-ShengTsao (Lao Tsao) Ph.D.
may be do zpool import -R /a rpool On 5/17/2011 1:56 PM, Orvar Korvar wrote: I have a fresh install of Solaris 11 Express on a new SSD. I have inserted the old hard disk, and tried to import it, with: # zpool import -f Old_rpool but the computer reboots. Why is that? On my old hard disk, I h

[zfs-discuss] Reboots when importing old rpool

2011-05-17 Thread Orvar Korvar
I have a fresh install of Solaris 11 Express on a new SSD. I have inserted the old hard disk, and tried to import it, with: # zpool import -f Old_rpool but the computer reboots. Why is that? On my old hard disk, I have 10-20 BE, starting with OpenSolaris 2009.06 and upgraded to b134 up to snv_15

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-17 Thread George Wilson
On Tue, May 17, 2011 at 6:49 AM, Jim Klimov wrote: > 2011-05-17 6:32, Donald Stahl пишет: >> >> I have two follow up questions: >> >> 1. We changed the metaslab size from 10M to 4k- that's a pretty >> drastic change. Is there some median value that should be used instead >> and/or is there a downs

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-17 Thread George Wilson
On Mon, May 16, 2011 at 7:32 PM, Donald Stahl wrote: > As a followup: > > I ran the same DD test as earlier- but this time I stopped the scrub: > > pool0       14.1T  25.4T     88  4.81K   709K   262M > pool0       14.1T  25.4T    104  3.99K   836K   248M > pool0       14.1T  25.4T    360  5.01K  

Re: [zfs-discuss] ZFS File / Folder Management

2011-05-17 Thread Richard Elling
On May 17, 2011, at 9:17 AM, Jim Klimov wrote: > Hello, c4ts, > > There seems to be some mixup of bad English and wrong terminology, so I am > not sure I understood your question correctly. Still, I'll try to respond ;) > > I've recently posted about ZFS terminology here: > http://opensolaris.

Re: [zfs-discuss] ZFS File / Folder Management

2011-05-17 Thread Jim Klimov
Hello, c4ts, There seems to be some mixup of bad English and wrong terminology, so I am not sure I understood your question correctly. Still, I'll try to respond ;) I've recently posted about ZFS terminology here: http://opensolaris.org/jive/click.jspa?searchID=4607806&messageID=515894 In ZFS

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-17 Thread Donald Stahl
> metaslab_min_alloc_size is not the metaslab size. From the source Sorry- that was simply a slip of the mind- it was a long day. > By reducing this value, it is easier for the allocator to identify a > metaslab for allocation as the file system becomes full. Thank you for clarifying. Is there a

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-17 Thread Richard Elling
On May 16, 2011, at 7:32 PM, Donald Stahl wrote: > As a followup: > > I ran the same DD test as earlier- but this time I stopped the scrub: > > pool0 14.1T 25.4T 88 4.81K 709K 262M > pool0 14.1T 25.4T104 3.99K 836K 248M > pool0 14.1T 25.4T360 5.01K 2.

Re: [zfs-discuss] ZFS File / Folder Management

2011-05-17 Thread Giovanni Tirloni
On Mon, May 16, 2011 at 8:54 PM, MasterCATZ wrote: > > Is it possible to ZFS to keep data that belongs together on the same Pool > > ( or would these Questions be more related to Raid-Z ? ) > > that way if their is a failure only the Data on the Pool that Failed Needs to > be replaced > ( or if o

[zfs-discuss] ZFS File / Folder Management

2011-05-17 Thread MasterCATZ
Is it possible to ZFS to keep data that belongs together on the same Pool ( or would these Questions be more related to Raid-Z ? ) that way if their is a failure only the Data on the Pool that Failed Needs to be replaced ( or if one Pool failed Does that Mean All the other Pools still fail as

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-17 Thread Jim Klimov
2011-05-17 6:32, Donald Stahl пишет: I have two follow up questions: 1. We changed the metaslab size from 10M to 4k- that's a pretty drastic change. Is there some median value that should be used instead and/or is there a downside to using such a small metaslab size? 2. I'm still confused by th

Re: [zfs-discuss] Still no way to recover a "corrupted" pool

2011-05-17 Thread Dick Hoogendijk
Op 16-5-2011 22:55 schreef Freddie Cash: On Fri, Apr 29, 2011 at 5:17 PM, Brandon High wrote: On Fri, Apr 29, 2011 at 1:23 PM, Freddie Cash wrote: Running ZFSv28 on 64-bit FreeBSD 8-STABLE. I'd suggest trying to import the pool into snv_151a (Solaris 11 Express), which is the reference and d