Re: [zfs-discuss] zfs promote

Hello, # /usr/sbin/zfs list -r rgd3 NAME USEDAVAIL REFER MOUNTPOINT rgd3 16.5G23.4G20K /rgd3 rgd3/fs1 19K 23.4G21K /app/fs1 rgd3/fs1-patch

[zfs-discuss] zfs promote

Hello, Immediately after a promote, the snapshot of the promoted clone has 1.25G used. NAME USED AVAIL REFER q2/fs1 4.01G 9.86G 8.54G q2/f...@test1 [b]1.25G[/b] - 5.78G - prior to the promote the snapshot of the origin file system looke

[zfs-discuss] ZFS ARC

Hi, I have heard references to ARC releasing memory when the demand is high. Can someone please point me to the code path from the point of such a detection to ARC release? Thanks -- This message posted from opensolaris.org ___ zfs-discuss mailing li

[zfs-discuss] zio_assess

Hi, What does zio_assess do? Is it a stage of pipeline? I see quite a bit these stacks in 5 second time. I tried to search src.opensolaris, did not find any reference. Thanks for any help zfs`zio_assess+0x58 zfs`zio_execute+0x74 genunix`taskq_thread+

[zfs-discuss] zfs IO scheduler

Hello, Trying to understand the ZFS IO scheduler, because of the async nature it is not very apparent, can someone give a short explanation for each of these stack traces and for their frequency this is the command dd if=/dev/zero of=/test/test1/trash count=1 bs=1024k;sync no other IO is hap

Re: [zfs-discuss] zpool iostat and iostat discrepancy

Neil, Thanks. That makes sense. May be man page for zpool can say that it is a rate as iostat man page does. I think reads are from the zpool iostat command itself. zpool iostat doesn't capture that. Thanks -- This message posted from opensolaris.org __

[zfs-discuss] zpool iostat and iostat discrepancy

Hi, Does anyone know the difference between zpool iostat and iostat? dd if=/dev/zero of=/test/test1/trash count=1 bs=1024k;sync pool only shows 236K IO and 13 write ops. whereas iostat shows a correctly meg of activity. zpool iostat -v test 5 capac

[zfs-discuss] need some explanation

Hi, OS : Solaris 10 11/06 zpool list doesn't reflect pool usage stats instantly. Why? # ls -l total 209769330 -rw--T 1 root root 107374182400 Apr 30 14:28 deleteme # zpool list NAMESIZEUSED AVAILCAP HEALTH ALTROOT wo136G10

[zfs-discuss] zfs block allocation strategy

Hi, quoting from zfs docs "The SPA allocates blocks in a round-robin fashion from the top-level vdevs. A storage pool with multiple top-level vdevs allows the SPA to use dynamic striping to increase disk bandwidth. Since a new block may be allocated from any of the top-level vdevs, the SPA imp

[zfs-discuss] Re: storage type for ZFS

is cache flushing part of the SCSI protocol? If not, how does ZFS become aware of the array specific command? Thanks This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailma

[zfs-discuss] storage type for ZFS

The paragraph below is from ZFS admin guide Traditional Volume Management As described in “ZFS Pooled Storage” on page 18, ZFS eliminates the need for a separate volume manager. ZFS operates on raw devices, so it is possible to create a storage pool comprised of logical volumes, either software

[zfs-discuss] adding a disk

Hi, I would like to know what changes are made to the storage disk/lun/slice when it is added to a zfs pool? I am trying to relate to VxVM where the VTOC is changed. In otherwords, is there way to know if storage is part of ZFS just by examing any structure of the storage? Some documentation