Displaying 3 results from an estimated 3 matches for "zfs_getpage".
2006 Jun 13
4
ZFS panic while mounting lofi device?
...ge_unlock: page c51b29e0 is not locked
Jun 13 19:33:04 mathrock-opensolaris unix: [ID 100000 kern.notice]
Jun 13 19:33:04 mathrock-opensolaris genunix: [ID 353471 kern.notice] d1fafb54 unix:page_unlock+160 (c51b29e0)
Jun 13 19:33:04 mathrock-opensolaris genunix: [ID 353471 kern.notice] d1fafbb0 zfs:zfs_getpage+27a (d1e897c0, 3
000, 0, )
Jun 13 19:33:04 mathrock-opensolaris genunix: [ID 353471 kern.notice] d1fafc0c genunix:fop_getpage+36 (d1e897c0
, 8000, 0, )
Jun 13 19:33:04 mathrock-opensolaris genunix: [ID 353471 kern.notice] d1fafca0 genunix:segmap_fault+202 (ce043f
58, fec23310,)
Jun 13 19:33:04 math...
2008 Feb 19
1
ZFS and small block random I/O
...in aggregate, the
segmap cache gets 100% hits for 1-3 attempts *every 10 seconds*--while
all other samples are zero% for zero attempts. I don''t know the kernel
I/O path as well as I''d like, but I tried to see requests for ZFS to
grab a file/offset block from disk by DTracing fbt::zfs_getpage
(assuming it was the ZFS equivalent of ufs_getpage) and got no hits as
well. In other words, it''s as if ZFS isn''t using the segmap cache.
Secondly, DTrace scripts show the IOzone application is reading 8KB
blocks, but by the time the physical I/O happens it''s balloon...
2007 May 02
41
gzip compression throttles system?
I just had a quick play with gzip compression on a filesystem and the
result was the machine grinding to a halt while copying some large
(.wav) files to it from another filesystem in the same pool.
The system became very unresponsive, taking several seconds to echo
keystrokes. The box is a maxed out AMD QuadFX, so it should have plenty
of grunt for this.
Comments?
Ian