Date: Thu, 4 Dec 2014 18:37:42 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r275481 - head/sys/cam/ctl Message-ID: <201412041837.sB4Ibgmr069929@svn.freebsd.org>
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Author: mav Date: Thu Dec 4 18:37:42 2014 New Revision: 275481 URL: https://svnweb.freebsd.org/changeset/base/275481 Log: Add to CTL support for threshold notifications for file-backed LUNs. Previously it was supported only for ZVOL-backed LUNs, but now should work for file-backed LUNs too. Used value in this case is a space occupied by the backing file, while available value is an available space on file system. Pool thresholds are still not implemented in this case. MFC after: 2 weeks Sponsored by: iXsystems, Inc. Modified: head/sys/cam/ctl/ctl_backend_block.c Modified: head/sys/cam/ctl/ctl_backend_block.c ============================================================================== --- head/sys/cam/ctl/ctl_backend_block.c Thu Dec 4 18:23:13 2014 (r275480) +++ head/sys/cam/ctl/ctl_backend_block.c Thu Dec 4 18:37:42 2014 (r275481) @@ -242,6 +242,8 @@ static void ctl_be_block_dispatch_file(s struct ctl_be_block_io *beio); static void ctl_be_block_gls_file(struct ctl_be_block_lun *be_lun, struct ctl_be_block_io *beio); +static uint64_t ctl_be_block_getattr_file(struct ctl_be_block_lun *be_lun, + const char *attrname); static void ctl_be_block_flush_dev(struct ctl_be_block_lun *be_lun, struct ctl_be_block_io *beio); static void ctl_be_block_unmap_dev(struct ctl_be_block_lun *be_lun, @@ -799,6 +801,31 @@ ctl_be_block_gls_file(struct ctl_be_bloc ctl_complete_beio(beio); } +static uint64_t +ctl_be_block_getattr_file(struct ctl_be_block_lun *be_lun, const char *attrname) +{ + struct vattr vattr; + struct statfs statfs; + int error; + + if (be_lun->vn == NULL) + return (UINT64_MAX); + if (strcmp(attrname, "blocksused") == 0) { + error = VOP_GETATTR(be_lun->vn, &vattr, curthread->td_ucred); + if (error != 0) + return (UINT64_MAX); + return (vattr.va_bytes >> be_lun->blocksize_shift); + } + if (strcmp(attrname, "blocksavail") == 0) { + error = VFS_STATFS(be_lun->vn->v_mount, &statfs); + if (error != 0) + return (UINT64_MAX); + return ((statfs.f_bavail * statfs.f_bsize) >> + be_lun->blocksize_shift); + } + return (UINT64_MAX); +} + static void ctl_be_block_dispatch_zvol(struct ctl_be_block_lun *be_lun, struct ctl_be_block_io *beio) @@ -1724,6 +1751,7 @@ ctl_be_block_open_file(struct ctl_be_blo be_lun->dispatch = ctl_be_block_dispatch_file; be_lun->lun_flush = ctl_be_block_flush_file; be_lun->get_lba_status = ctl_be_block_gls_file; + be_lun->getattr = ctl_be_block_getattr_file; error = VOP_GETATTR(be_lun->vn, &vattr, curthread->td_ucred); if (error != 0) {
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