search for: xenblkd

............ root@Eureka:~ # fine, no errors there. root@Eureka:~ # cat /var/log/xend.log [2005-07-15 10:52:47 xend] INFO (SrvDaemon:610) Xend Daemon started Looks promising. However, following this: root@Eureka:~ # ps auxw|grep xen root 754 0.0 0.0 0 0 ? S Jul14 0:00 [xenblkd] No xend. xm fails with a ''connection refused'' error. Running "strace /usr/sbin/xend start" yields the following log: www.ultracode.com/xend.start.gz Solutions, thoughts, ideas, suggestions for further debugging? Thanks, Eric eric@first-circle.net ________________...

...free, 23152k buffers Swap: 3148732k total, 688k used, 3148044k free, 93588k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 3 root 34 19 0 0 0 S 0.0 0.0 150:58.34 ksoftirqd/0 215 root 15 0 0 0 0 S 1.3 0.0 7:35.51 xenblkd 1241 root 16 0 3948 560 468 S 0.0 0.2 3:45.44 nifd 1960 root 16 0 15680 9136 2564 S 0.0 2.6 3:42.15 python 1207 root 16 0 1788 476 404 S 0.0 0.1 2:29.08 irqbalance 6 root 10 -5 0 0 0 S 0.0 0.0 2:04.54 events/0 89 root 15 0...

... 0.0  0.0   0:06.93 kblockd/0    72 root      15 -10     0    0    0 S  0.0  0.0   0:00.00 aio/0    71 root      15   0     0    0    0 S  0.0  0.0   0:32.39 kswapd0   655 root      25   0     0    0    0 S  0.0  0.0   0:00.00 kseriod   698 root      15   0     0    0    0 S  0.0  0.0   0:21.67 xenblkd   714 root      15   0     0    0    0 S  0.0  0.0   0:12.01 kjournald  1035 root      16   0  1560  588  492 S  0.0  0.5   0:04.13 syslogd  1038 root      16   0  2068 1088  448 S  0.0  0.9   0:00.13 klogd  1047 root      15   0  3400 1488 1264 S  0.0  1.2   0:07.53 sshd  1052 daemon    16  ...

...gt;refcnt); - - tap_blkif_unmap(blkif); -} - void tap_blkif_kmem_cache_free(blkif_t *blkif) { if (!atomic_dec_and_test(&blkif->refcnt)) --- a/drivers/xen/blktap/xenbus.c +++ b/drivers/xen/blktap/xenbus.c @@ -187,7 +187,7 @@ static int blktap_remove(struct xenbus_d if (be->blkif->xenblkd) kthread_stop(be->blkif->xenblkd); signal_tapdisk(be->blkif->dev_num); - tap_blkif_free(be->blkif); + tap_blkif_free(be->blkif, dev); tap_blkif_kmem_cache_free(be->blkif); be->blkif = NULL; } @@ -342,7 +342,7 @@ static void blkif_disconnect(blkif_t *bl }...

...-backend", blkif); + if (err < 0) { + xenbus_unmap_ring_vfree(blkif->be->dev, blkif->blk_ring); + blkif->blk_rings_v2.common.sring = NULL; + return err; + } + blkif->irq = err; + + return 0; +} + static void xen_blkif_disconnect(struct xen_blkif *blkif) { if (blkif->xenblkd) { @@ -192,10 +269,18 @@ static void xen_blkif_disconnect(struct xen_blkif *blkif) blkif->irq = 0; } - if (blkif->blk_rings.common.sring) { + if (blkif->blk_backring_type == BACKRING_TYPE_1 && + blkif->blk_rings.common.sring) { xenbus_unmap_ring_vfree(blkif->be...

...truct xen_vbd { struct backend_info; + +struct pers_gnt { + struct page *page; + grant_ref_t gnt; + uint32_t handle; + uint64_t dev_bus_addr; +}; + struct xen_blkif { /* Unique identifier for this interface. */ domid_t domid; @@ -190,6 +200,12 @@ struct xen_blkif { struct task_struct *xenblkd; unsigned int waiting_reqs; + /* frontend feature information */ + u8 can_grant_persist:1; + struct pers_gnt *pers_gnts[BLKIF_MAX_PERS_REQUESTS_PER_DEV * + BLKIF_MAX_SEGMENTS_PER_REQUEST]; + unsigned int pers_gnt_c; + /* statistics */ unsigned long st_print; int st_rd_req; d...

Patrick, there following patches fix xenpaging for me. Granttable handling is incomplete. If a page is gone, a GNTST_eagain should be returned to the caller to inidcate the hypercall has to be retried after a while, until the page is available again. Please review. Olaf _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com

I''m tracking performance on the machine I installed yesterday. mutt running on one Xen instance, accessing via imap to another instance, accessing via nfs the maildir in another instances, seems little laggy when moving up and down the message index list. Network latency seems low < 30ms on average. So I was tracking vmstat. On the mutt instances is seems reasonable: [nic@shell:~]