Re: [zfs-discuss] Bad SWAP performance from zvol

2009-04-06 Thread Lori Alt
I'm not sure where this issue stands now (am just now checking mail after being out for a few days), but here are the block sizes used when the install software creates swap and dump zvols: swap: block size is set to PAGESIZE (4K for x86, 8K for sparc) dump: block size is set to 128 KB Liveup

[zfs-discuss] jigdo or lofi can crash nfs+zfs

2009-04-06 Thread Frank Middleton
These problems both occur when accessing a ZFS dataset from Linux (FC10) via NFS. Jigdo is a fairly new bit-torrent-like downloader. It is not entirely bug free, and the one time I tried it, it recursively downloaded one directory's worth until ZFS eventually sort of died. It put all the disks in

[zfs-discuss] Efficient backup of ZFS filesystems?

2009-04-06 Thread Gary Mills
I've been watching the ZFS ARC cache on our IMAP server while the backups are running, and also when user activity is high. The two seem to conflict. Fast response for users seems to depend on their data being in the cache when it's needed. Most of the disk I/O seems to be writes in this situati

Re: [zfs-discuss] Error ZFS-8000-9P

2009-04-06 Thread Jens Elkner
On Fri, Apr 03, 2009 at 10:41:40AM -0700, Joe S wrote: > Today, I noticed this: ... > According to http://www.sun.com/msg/ZFS-8000-9P: > > The Message ID: ZFS-8000-9P indicates a device has exceeded the > acceptable limit of errors allowed by the system. See document 203768 > for additional inform

Re: [zfs-discuss] Dreadful lofi read performance on snv_111

2009-04-06 Thread John Levon
On Mon, Apr 06, 2009 at 04:46:12PM +0700, Fajar A. Nugraha wrote: > On Mon, Apr 6, 2009 at 4:41 PM, John Levon wrote: > > I see a couple of bugs about lofi performance like 6382683, but I'm not > > sure if this > > related, it seems to be a newer issue. > > Isn't it 6806627? > > http://opensol

Re: [zfs-discuss] Dreadful lofi read performance on snv_111

2009-04-06 Thread Fajar A. Nugraha
On Mon, Apr 6, 2009 at 4:41 PM, John Levon wrote: > I see a couple of bugs about lofi performance like 6382683, but I'm not sure > if this > related, it seems to be a newer issue. Isn't it 6806627? http://opensolaris.org/jive/thread.jspa?threadID=98043&tstart=0 Regards, Fajar

[zfs-discuss] Dreadful lofi read performance on snv_111

2009-04-06 Thread John Levon
On snv_111 OpenSolaris. heaped is snv_101b, both ZFS: # mount -F hsfs /rpool/dc/media/OpenSolaris.iso /mnt # ptime cp /mnt/boot/boot_archive /var/tmp real 3:31.453461873 user0.003283729 sys 0.376784567 # mount -F hsfs /net/heaped/export/netimage/opensolaris/vnc-fix.iso /mnt2